Due to its dilution factor, plate "C 1.0 mL 1:1,000,000" has a significant possibility of displaying several isolated, countable colonies. Even though both plates got the same volume, plate "C 0.1mL 1:1,000,000" will have less isolated colonies than plate "B 0.1 1:100,000".
How can you improve the accuracy of a serial dilution?An accurate serial dilution requires mixing. After each transfer phase, a mixing step utilizing half the volume of the intermediate step is added to provide a precise and constant serial dilution.
What happens during a serial dilution?For instance, 1 ml of the beginning sample is introduced to 9 ml of Dilution Blank Tube 1 to carry out serial dilution. The same process is then carried out, using 1 ml from Tube. Nine milliliters from Tube 3 are added to Tube 2 and so on until the required concentration is obtained.
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Is there more sediment or igneous rock on Venus? Please answer fast I need it for class tomorrow
There is more quantity of igneous rocks are present on Planet Venus.
What type of rock covers most of Venus?The data from Venera 13 and 14 landers indicates that the surface of Venus is made up of basaltic rocks similar in composition to those rocks that are found on Earth.
Venus is made up of an iron core and a rocky mantle that is similar to the composition of Earth. Its atmosphere is made up of carbon dioxide (96%) and nitrogen (3%) with small amounts of different gases.
Igneous rocks dominate Venus and Mercury because water is the main force for the creation of sedimentary rocks, and those planets are also dry. Mars alone has sedimentary rocks that are similar to those on Earth.
So we can conclude that more igneous rocks are present on Venus
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Question 6 of 10
Which best describes the area of a polygon?
OA. The distance around the outside edge
B. The number of square units contained in the interior
OC. The number of cubic units contained in the interior
OD. The product of the side lengths
SUR
Answer:C.The number of square units contained in the interior.
The area of the polygon is C.The number of square units contained in the interior.
When we need to find the area of a polygon we must add all of space that in the inside of the shape that lines along each line, which means that C is our correct answer.
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a bacterium that uses sunlight to oxidize lactic acid (electron source) when generating atp and obtains its carbon from co2 is a ____________
A bacterium that uses sunlight to oxidize lactic acid (electron source) when generating ATP and obtains its carbon from carbon dioxide is a photoautotroph.
Photoautotrophic bacteria are basically the bacteria which are able to trap the light energy and then convert it into chemical energy. They are able to make their own food like plants do. Photoautotrophic bacteria are also able perform oxygenic photosynthesis.
Cyanobacteria which are also commonly known as the blue green algae are examples oh photoautotrophic bacteria. These bacteria are also important to heterotrophs so they can obtain food. On the other hand the photosynthetic bacteria which are not able to use carbon dioxide as their direct source of carbon are known as photoheterotrophic.
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As a cook chops red onions he begins to tear up due to activation of the lacrimal gland. Which of the following nerves provided the stimulus?The facial nerve (VII)
The extensive afferent, sensory, corneal, and conjunctival nerves stimulate the efferent neurons to the lacrimal gland, which activates them and causes the gland to secrete electrolytes, water, and proteins onto the surface of the eye as lacrimal gland fluid.
Which of these nerves activates the lacrimal gland and two salivary glands, causing tears to form?The parasympathetic portion of the facial nerve is essential. It controls the lacrimal, submandibular, and sublingual salivary glands.
In reality, when you cut an onion, you're separating tiny cells packed with enzymes that escape as flammable vapours. This starts a chemical process that produces a lachrymatory substance, which is similar to the ingredients in tear gas.
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Which of the following may occur due to increase in thyroid releasing hormone from the hypothalamus? (Select all that apply.) - An increase in thyroid secretion by the thyroid hormone.- An increase in Na+/K+ ATPase proteins. - An increase in metabolic rate.
The following may occur due to increase in thyroid releasing hormone from the hypothalamus are increased thyroid secretion by thyroid hormones, Increased protein Na+/K+ ATPase, andIncreased metabolic rate.
The thyroid gland has a butterfly-like shape located in the neck which is part of the endocrine system. These glands produce the T3 and t4 hormones while the hypothalamus gland releases TSH-releasing hormone. Increased TSH from the hypothalamus will increase production from the thyroid gland so that it can cause hyperthyroidism.
Hyperthyroidism is a condition when the thyroid gland produces too much thyroid hormone. This condition will speed up the rate of metabolism so that the patient's weight can decrease. In addition, this condition can cause excessive cardiac activity due to increased activity of Na+/K+ ATPase. Therefore all the answer choices above are all correct.
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There is an interesting optical effect you have likely noticed while driving along a flat stretch of road on a sunny day. A small, distant dip in the road appears to be filled with water. You may even see the reflection of an oncoming car. But, as you get closer, you find no puddle of water after all; the shimmering surface vanishes, and you see nothing but empty road. It was only a mirage, the name for this phenomenon.The mirage is due to the different index of refraction of hot and cool air. The actual bendingof the light rays that produces the mirage is subtle, but we can make a simple model as follows. When air is heated, its densitydecreases and so does its index of refraction. Consequently, a pocket of hot air in a dip in a road has a lower index of refraction than the cooler air above it. Incident light rays with large angles of incidence (that is, nearly parallel to the road, as shown in Figure P18.83) experience total internal reflection. The mirage that you see is due to this reflection. As you get nearer, the angle goes below the critical angle and there is no more total internal reflection; the "water" disappears!Which of these changes would allow you to get closer to the mirage before it vanishes?A. Making the pocket of hot air nearer in temperature to the air above itB. Looking for the mirage on a windy day, which mixes the air layersC. Increasing the difference in temperature between the pocket of hot air and the air above itD. Looking at it from a greater height above the ground
The changes that would allow you to get closer to the mirage before it vanishes is by increasing the difference in temperature between the pocket of hot air and the air above it, thus option C is correct.
For the entire reflection, we have the equation sinθ = [tex]\frac{n_{1} }{n_{2}}[/tex] where n₁ is optically denser than n₂. The sine function has a decreasing value as we go closer to the puddle and the angel gets smaller.
The air's index of refraction is proportional to temperature; as a result, the refractive index of the air decreases with decreasing temperature and increases with increasing temperature. This suggests that we should raise the temperature difference between the hot air pocket and the air above it.
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which of the following hormones is a part of the rapid response (rather than the prolonged response) to stress?
The hormone epinephrine is part of the rapid response to stress. The correct answer A.
It is released from the adrenal medulla as a result of the increase in the sympathetic nervous system activity.
Epinephrine helps prepare the body for the "fight or flight" response by increasing heart rate and blood pressure, and decreasing digestion.
It also increases the production of adrenaline, which helps to increase alertness and focus during stressful situations. Finally, epinephrine increases the production of cortisol, which helps to regulate the body's response to stress and helps to restore the body to a more relaxed state after a stressful event.
Which of the following hormones is a part of the rapid response (rather than the prolonged response) to stress?
a. Epinephrine
b. Aldosterone
c. Cortisol
d. ADH (vasopressin)
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what 2 traits do you think hold a very large survival advantage for an animal? why?
Answer:What are 3 traits of animals?
Explanation:
All animals are heterotrophs. Animals have sensory organs, the ability to move, and internal digestion. They also have sexual reproduction.
After Darwin in Biology
Answer:
Since the publication of Charles Darwin's On the Origin of Species in 1859, biological research has been dominated by evolutionary theory. This has led to a better understanding of how species change over time and how species interact with one another and with their environment. It has also led to an increased focus on conservation biology, which seeks to protect threatened species and manage healthy ecosystems. Research has also looked at the genetic basis of evolution and how organisms adapt to their environment. Areas such as molecular biology, genetics, and epigenetics have all been impacted by Darwin's work and have led to a better understanding of how organisms work and how they evolve.
Activity In this activity, you will compare the volume of a cube with the volume of a pyramid that has the same base and height as the cube to find how the volumes are related. Go to volume of a cube and volume of a pyramid, and complete each step below. Question 1 Drag the orange point on the cube to change its side length. Then set the base of the pyramid to the same dimensions as a face on the cube. Also set the height of the pyramid to the same side length as the cube. Note the volumes of the cube and the pyramid. Record the volumes for a few sets of heights and bases, and then calculate the ratio of the volumes. Be sure the dimensions for the cube and the pyramid are the same in each set. (You might see some discrepancies in the tool due to rounding of decimals.) Round your calculations for the ratio to the hundredths place. The first one has been done for you.
Explanation:
Set 1:
Cube Side Length: 4
Cube Volume: 64
Pyramid Base: 4
Pyramid Height: 4
Pyramid Volume: 32
Ratio: 64:32 = 2:1
Set 2:
Cube Side Length: 6
Cube Volume: 216
Pyramid Base: 6
Pyramid Height: 6
Pyramid Volume: 108
Ratio: 216:108 = 2:1
Set 3:
Cube Side Length: 8
Cube Volume: 512
Pyramid Base: 8
Pyramid Height: 8
Pyramid Volume: 256
Ratio: 512:256 = 2:1
Which of the following correctly states two sister taxa and the basal taxon of the tree depicted below?A) Taxon A and B are sister taxa, and taxon A is the basal taxonB) Taxon B and C are sister taxa, and taxon A is the basal taxonC) Taxon D and E are sister taxa, and taxon F is the basal taxonD) Taxon C and D are sister taxa, and taxon A is the basal taxonE) Taxon A and D are sister taxa, and taxon F is the basal taxon
Sister taxa are two taxonomic groups that share a common ancestor, while the basal taxon is the most ancestral taxonomic group from which all other taxonomic groups are derived.
Sister taxa are two closely related taxonomic groups that share a common ancestor. This common ancestor is the basal taxon, which is the most ancestral taxonomic group from which all other taxonomic groups are derived. Sister taxa form the basis of taxonomic classification systems and are often used to classify living organisms.
For example, two species of birds may be classified as sister taxa if they share a common ancestor species, and the common ancestor would be their basal taxon. Sister taxa and the basal taxon are important components of the classification of living organisms, as they provide insights into the evolutionary relationships between different species.
The answer is general, as no picture was provided. However, you may consider this answer from another source:
"Taxon D and E are sister taxa, and taxon F is the basal taxon." (C)
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Can the size of a supercoiled plasmid DNA be determined by using standard DNA size fragment electrophoresed in parallel? Please explain why or why not?
Answer:
No, not at all. The standard DNA and the plasmid have different conformations. DNA is separated using agarose gel electrophoresis based on its size and form. Because super coiled plasmid DNA
Explanation:
In a testcross involving F1 dihybrid flies, more parental – type offspring were produced than the recombinant – type offspring. This indicates:
A. The two genes are located on two different chromosomes
B. Chromosomes failed to separate during meiosis
C. The two genes are linked and present on the same chromosome
D. Both of the characters are controlled by more than one gene
This demonstrates the relationship between the two genes and their shared chromosomes location.
What does a 50% recombination frequency between two genes mean?Given that the genes are present on the same chromosome but are far from one another, a 50% recombinant frequency suggests that more than one crossover may have taken place during each meiosis. They may also not be linked because they were on different chromosomes.
What causes related genes to be inherited together?Because they are more likely to be inherited together, linked genes are those that are physically close to one another on the same chromosome. During meiosis, chromosomes are recombined, resulting in gene exchanges between homologous chromosomes.
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Energy can leave a system in which form?
Question 19 options:
matter
heat
biomass
nutrients
OPTION NUMBER 2) HEAT
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even though many assume that alcohol is primarily a , it is, in fact, primarily a(n) .
Even though many people assume that alcohol is primarily a stimulant, it is, in fact, primarily a depressant.
Alcohol acts as a depressant on the central nervous system, slowing down brain function and causing a decrease in physical and mental alertness. This can lead to symptoms such as impaired coordination and judgment, slurred speech, and drowsiness. At higher doses, alcohol can cause unconsciousness and even death. It is important to note that while alcohol may initially have a stimulating effect, leading some people to feel more talkative or energetic, these effects are short-lived and are quickly followed by the depressant effects of the drug.
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The Grants were able to show that after dry years, when ----- seeds are produced, and smaller seeds are quickly eaten, the average beak depth of medium ground finches ---------
The Grants were able to show that after dry years, when fewer seeds are produced, and smaller seeds are quickly eaten, the average beak depth of medium-ground finches increases.
The Geospiza fortis, often known as the medium ground finch, is a species of bird that belongs to the family Thraupidae. It is a species that can only be found on the Galapagos Islands. The principal type of natural habitat in which it can be found in tropical shrubland. One of Darwin's finches, this species was the first to evolve in front of the eyes of scientists as they watched it happen in real-time.
As a result of the low overall population numbers, the population of medium-ground finches has been suffering from inbreeding depression. The phenomenon known as inbreeding depression happens when individuals mate with genetic relatives, which leads to a decline in their overall fitness. In most cases, this results in a decrease in the amount of genetic variety and heterozygosity that is present.
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idnetify the point in mitosis at which separase cleaces the protein complex that holds sister chromatid pairs together
The point in mitosis at which separase cleaves the protein complex that holds sister chromatid pairs together is during anaphase.
Anaphase is the stage of mitosis in which the sister chromatids are separated and move towards opposite poles of the cell. This movement is driven by the action of the spindle apparatus, a complex of microtubules that attach to the kinetochores, structures located at the centromeres of the chromosomes. Separase is an enzyme that cleaves the protein complex holding the sister chromatids together, allowing them to separate and move towards opposite poles of the cell. The cleavage of this protein complex by separase triggers the release of tension on the chromatids, enabling them to move freely along the spindle fibers towards their respective poles. This is a critical step in ensuring that each daughter cell receives a complete and accurate set of chromosomes following cell division.To know more about mitosis visit:
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which of the following is not one of the core principles of anatomy and physiology introduced in this textbook?
Reflexes are not among the fundamental concepts of anatomy and physiology covered in this textbook.
Which of the following doesn't count as one of the body's four primary components?The four most prevalent elements are nitrogen, oxygen, carbon, and hydrogen. They make up 99% of the mass of living things, together with calcium and phosphorus.
What are the body's four primary components?The four most common elements in your body—hydrogen, oxygen, carbon, and nitrogen—make up more than 99 percent of all the atoms. They are all present in your body, mostly as water but also as components of biomolecules including proteins, lipids, DNA, and carbohydrates.
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TRUE/FALSE. the erectile tissue which forms the corpus spongiosum is a continuation of the erectile tissue of the crus.
True. The erectile tissue which forms the corpus spongiosum is a continuation of the erectile tissue of the crus.
What is corpus spongiosum?The corpus spongiosum is a column of erectile tissue that is part of the male anatomy. It is located in the center of the male reproductive organ and runs along the length of the shaft. The corpus spongiosum is surrounded by two other columns of erectile tissue, known as the corpora cavernosa, which are responsible for the majority of the male reproductive organ' girth and length. The corpus spongiosum is unique in that it surrounds the urethra and expands at the end to form the front rounded pat of male reproductive organ. The corpus spongiosum also plays a role in the process of erection by filling with blood during sexual arousal, causing the male reproductive organ to become engorged and stiff. The corpus spongiosum is a continuation of the erectile tissue of the crus in the human male reproductive organ. The corpus spongiosum is a sponge-like mass of tissue that surrounds the urethra and expands at the end to form the male reproductive organ.
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what objective do you set your microscope to look through to get the following magnifications of your specimen?
To achieve different magnifications in a microscope, you need to set the objective lens to the desired magnification. Most microscopes have multiple objective lenses of different magnifications, usually 4x, 10x, 40x and 100x.
For low magnification observations, a 4x or 10x objective lens is suitable. The 10x objective provides a clear and wide field of view, making it ideal for locating and orienting the specimen.
For higher magnification observations, a 40x objective is often used. This magnification provides a more detailed view of the specimen, allowing you to see fine structures and details.
For even higher magnification observations, a 100x objective lens is available. This magnification provides the highest level of detail, and is typically used to observe very small structures and fine details.
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Protists are essential to the survivor of organism ranging from bacteria to mammals. How are protists important to the ecosystem?
Protists produce around one-half of the oxygen which is essential for life on the planet by the process of photosynthesis.
What is the importance of Protists?All protists make up a large part of the food chain. Humans use protists for many reasons for example many protists are commonly used in medical research. For example, medicines made from protists are used in the treatment of high blood pressure, digestion problems, ulcers, and arthritis.
Some protists are used in scientific studies. For example, slime molds including D. disodium, a protist whose habitat is soil are used to figure out the chemical signals in cells.
Protists are important for the dairy industry. For example, if we observe the back of a milk carton we will notice carrageenan which is a protist that is extracted from red algae. It is used to make puddings and ice cream solid. Chemicals from some other kinds of protists that as algae are used to make many types of plastics.
Protists function at different levels of the ecological food web is as primary producers also as direct food sources and decomposers also many protists are parasites of plants and animals that can be fatal for humans and destroy valuable crops.
So we can conclude that about one-half of the oxygen which is essential for life on the planet is produced by Protists through photosynthesis.
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nucleophilic addition of a carbonyl group under basic conditions takes place with which of the following?a. protonation of the carbonyl oxygenb. formation of a carbanionc. formation of an alkoxide iond. protonation of the carbonyl carbon
The nucleophilic addition of a carbonyl group under basic conditions takes place with the formation of a carbanion. The correct answer is B.
A carbonyl group consists of a carbon atom double-bonded to an oxygen atom, and it is a common functional group in organic chemistry. When a carbonyl group is subjected to basic conditions, the carbonyl oxygen is deprotonated, forming a negatively charged species called a carbanion.
The carbanion is highly reactive and can act as a nucleophile, meaning that it can donate electrons to form a new bond. In the case of a carbonyl group, the carbanion attacks the carbonyl carbon, forming a new bond and resulting in the formation of a new molecule.
This reaction is known as nucleophilic addition to the carbonyl group, and it is a fundamental reaction in organic synthesis. The type of molecule formed depends on the nature of the nucleophile, and it can be a variety of compounds such as alcohols, amines, or even cyclic compounds.
In summary, the nucleophilic addition of a carbonyl group under basic conditions occurs due to the formation of a carbanion, which acts as a nucleophile and attacks the carbonyl carbon, leading to the formation of a new molecule.
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Felicia smacks her thumb with a hammer while building a doghouse. The sense of ________ provides her brain with information about the pain she feels.
answer choices- kinesthesia
- nociception
- preconception
- thermoception
Building a doghouse, Felicia hits her thumb with a hammer. Her brain receives information about the pain she is experiencing from her sensation of nociception.
What type of processing analyses emotions and is influenced by the resources at hand?The process of creating perceptions from sensory input is referred to as "bottom-up processing." On the other hand, our perception of such feelings is influenced by our knowledge, experiences, and ideas. This is what we mean by "top-down processing."
One of the following processes is used to assess or provide meaning to sensory data or experiences?Perception is the organisation, analysis, and conscious experience of sensory facts. Perception involves both bottom-up and top-down processing.
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3. On hot, dry days the leaves of trees will close their stomata in order to conserve water and reacta,) occurrence of transpiration, a process in which water is lost from plant leaves through the stomata. V conditions are hot and dry for a prolonged period of time, drought occurs. During times of extreme drought, trees that are not adapted to living in drought conditions will often rapidly shed their leave biologist is curious to know how this phenomenon affects the tree's ability to perform photosynthe Which of the following is a testable question relating photosynthesis to this phenomenon that a bio could investigate with an experiment? a. Do extreme drought conditions cause trees to conserve energy by losing their leaves? b. Do extreme drought conditions cause trees to lose their leaves due to a lack of raw materia for photosynthesis? Does the loss of leaves due to extreme drought cause trees to perform photosynthesis in c of the tree? d. Does the loss of leaves due to extreme drought cause the trees to perform cell respiratior photosynthesis?
For each function listed, name one type of epithelium and an organ that provides for that function. Function 1: Protection Stretfied Squemous epitheliom the epidemis of the skin Function 2: Diffusion Simpie Squamous epitnetium lining of the hear Function 3: Secretion 5gudostretiied columner epithelium, the trechea Function 4 Fitration Simpie sauemoos epithetiom, kidnay glomervi Function 5: Absorption Simple columnar epitnelium the diaestive rec Istomech to rectom
Function 1: Stratified Squamous epithelium, Function 2 : Simple Squamous, Function 3: Glandular columnar epithelium, Function 4: Simple Squamous epithelium, Function 5: Simple Columnar epithelium.
Epithelium is a kind of tissue that lines the surfaces of organs and designs in the body. There are a few sorts of epithelium, each with a particular capability. For instance, Delineated Squamous epithelium gives security as it lines the skin (epidermis). Straightforward Squamous epithelium performs dispersion, as found in the lungs (alveoli). Glandular columnar epithelium is answerable for discharge, as found in the stomach. Straightforward Squamous epithelium additionally works in filtration, as found in the kidneys (glomerulus). Basic Columnar epithelium performs retention, as found in the digestive organs from the duodenum to the rectum. Every one of these epithelial tissues assume a urgent part in keeping up with the wellbeing and legitimate working of the organs they line.
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seo-yun is one of four children. her mother is short, and her father is tall. in all likelihood, when they are grown, seo-yun and her siblings will have heights _______ .
Seo-yun and her siblings will have heights in an intermediate range between the heights of the parents.
Thus, the correct option is B (look at the complete options after Explanation)
Humаns come in а vаriety of heights аnd genetics plаy а key role in determining whether we will be short or tаll. There’s much more thаn just heredity to consider before аssuming а person will аutomаticаlly be the sаme height аs their pаrents. Medicаl conditions, hormonаl deficiencies, аnd more cаn аll contribute to how tаll we аre
Аs а generаl rule of thumb, our height cаn be predicted bаsed on how tаll our pаrents аre. If they аre tаll or short, then our own height is sаid to end up somewhere bаsed on the аverаge heights between our two pаrents.
Your question is incomplete, but most probably your options were
A. like her mother.
B. in an intermediate range between the heights of the parents.
C. like her father.
D. all precisely in the middle between her mother’s height and her father’s height.
Thus, B is the correct answer.
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What did Galileo identifying the moons of Jupiter establish?
The Earth revolves around the sun.
Not all heavenly bodies revolve only around the Earth.
The Ptolemaic model was correct.
Copernicus was incorrect about orbits being perfect circles.
Answer: the answer is B good luck if its a test :)
Explanation:
Answer:
The answer is B.
Explanation:
Once an experiment is complete which of the following describes the last 2 steps
Once an experiment is complete the following which best describes the last 2 steps are the analysis of the results and drawing conclusions.
What is an Experiment?
This is referred to as a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried.
When an experiment is performed, different results are gotten which are then analyzed so as to see if there is a pattern and then a conclusion is drawn from it by the scientist which is therefore the reason why the aforementioned is the correct choice.
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with reference to water Potential gradient, explain why the plants may die when grown in salty soil
Explanation:
Water potential is the measure of free energy available in water. When the soil is salty, the water potential in the soil decreases, making it difficult for plants to absorb water and other necessary nutrients. The decrease in water potential reduces the ability of the plant's roots to take up water, resulting in dehydration and eventually death. Furthermore, the accumulation of salts in the soil cause osmotic stress, which can damage the plant's cells and reduce its ability to photosynthesize and grow. Therefore, when grown in salty soil, plants may die due to a decreased water potential and osmotic stress.
The phrases or terms describe different fundamental processes of nucleic acids. Classify each phrase or term as relating to replication, transcription, or translation.1. both DNA strands are duplicated2. DNA polymerase3. requires tRNA4. described as semi-conservative5. amino acids added to peptide chain6. single DNA strand is used to produce mRNA7. ribosome
Answer:1. Replication 2. Replication 3. Translation 4. Replication 5. Translation 6. Transcription 7. Translation
Explanation: DNA replication is semi-conservative, meaning that each new copy will have one original strand and one new strand. This uses many proteins and DNA polymerase. Transcription involves RNA polymerase reading a single strand of DNA to produce mRNA. In translation, the mRNA is read to produce a polypeptide chain. tRNA coupled to their amino acid bind in the ribosome, and the new amino acid is transferred to the growing peptide chain. This information movement from DNA to RNA to protein is known as the Central Dogma.