Answer:
Explanation:
Igneous rocks can be identified by the determination of the composition and texture of the rock.
what is the product of meiosis ll
Which step of the Scientific Method is most important? Explain.
Answer:
Problem, Purpose, or Research Question
Explanation:
The problem or research question is the single most important part of the scientific method. Every part of your project is done to answer this question.
Which describes a Mendelian trait?
A. Humans can have a variety of shoe sizes.
B. Humans can have dimples or no dimples.
C. There are many different skin colors for humans.
O
D. Human height is controlled by many genes.
Answer:
D. Human height is controlled by many genes.
Explanation:
Human height is controlled by many genes. describes a Mendelian trait.
Height is a model trait that is controlled by variant of genes and not by only one gene. Height is a contribution of many genes because the height of a body consists of different body parts, such as the torso, leg bones, and even the neck.
Hence, the correct option is "D".
Answer:
correct answer is actually b
Explanation:
i just got it wrong
Select all that apply. Which of the following are not properties of lipids? derived from fish, beans, milk, and eggs made up of steroids and phospholipids held together by peptide bonds deep, long-term storage of energy
Answer:
Hey there!
The correct answer would be "derived from fish, beans, milk, and eggs" and "held together by peptide bonds"
Let me know if this helps :)
Lipids are the bio-macromolecule that are soluble in hydrocarbons and are long-term storage of energy. Thus, options a and c are not the properties of lipids.
What are lipids?Lipids are the molecules involved in the biological functioning of the cell. They are organic compounds that are derivatives of fatty acids and include waxes, oils, and steroids.
They are the long term energy storage molecules and function as the chemical messenger in the body. The lipids consist of phospholipids and steroids that differ in function and structure.
The lipids are found in food containing corn, olive, seeds, nuts, fish, avocados, safflower, soy, etc. They are linked by the nonpolar covalent bonds due to their hydrophobic nature.
Therefore, the lipids are not held together by peptide bonds.
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If a mutation occurred that increased the number of exons in a sequence of DNA, what impact would this have on the protein formed from the gene
Answer:
See the answer below
Explanation:
An increase in the number of exons in a sequence of DNA would result in another protein with a longer amino acid sequence.
Exons are the coding part of a gene as opposed to introns. After transcription, the non-coding part of the gene - the introns - are removed by splicing and the exons are joined back together. The final RNA that will undergo translation consists of only exons.
The longer the exons in a gene, the more the codons present in the corresponding mRNA from the gene, and the more the number of amino acids that would be translated from the mRNA. A longer amino acid chain would result in a different protein.
Hence, a mutation that causes an increase in the number of exons in a sequence of DNA would result in a different protein with a longer amino acid sequence.
I need help ! Can someone please help me out !
Answer:leo committed insurance fraud
Explanation:
Which of the following blood components is involved in reducing blood loss from a damaged blood vessel?
A) Erythrocyte.
B) Platelet.
C) Lymphocyte.
D) Basophil.
E) Neutrophil.
Answer:
The correct answer is B
Explanation:
Platelet: "a small colorless disk-shaped cell fragment without a nucleus, found in large numbers in blood and involved in clotting."
Hope this helps! （づ￣3￣）づ╭❤～
Which measurements are equal to 671 decimeters?
Check all that apply.
67,100 millimeters
0.671 kilometers
67.1 hectometers
6.71 decameters
6,710 centimeters
Answer:
67,100 millimeters6.71 decameters6,710 centimetersAnswer:
The answers are A , D and E :)
Explanation:
1. In relation to homeostasis, explain why a person with toxic goiter tends to sweat profusely.
2. Explain how the action of a peptide hormone is similar to the action of the neurotransmitter norepinephrine.
Answer:
In relation to homeostasis, explain why a person with toxic goiter tends to sweat profusely.
When there is hyper secretion of thyroid hormone in an individual a condition called toxic goiter occurs.Here the goiter swells at the neck region.Although this may pose no potential risk, but it maybe cancerous.
Thyroid hormones(T3,T4),increases calorinogenesis,that is they are carlorinogenic(,generate it in the body).This increases the oxygen consumption of the heart, and therefore overall body temperature.
To control the body temperature, the body thermo regulatory mechanisms set in, as the blood convey the heat to the thermo receptors in the hypothalamus. Vasodilation (widening of blood capillaries) occurs as the hypothalamus control the body temperature.
Therefore, as the heat leaves the body, through the capillaries close the the skin surfaces,the body need to produce sweat to conveyed the heat which cools the body temperature,hence sweating .
2. Explain how the action of a peptide hormone is similar to the action of the neurotransmitter norepinephrine.
This is because norepinephrine. act as hormones when secreted by Adrenal gland directly into the blood streams and as neurotransmitter when produced from the CNS and sympathetic nervous system.
Generally,from transcription by the DNA, peptide hormone are transcribed by the mRNA,and the protein is translated into corresponding proteins by the tRNA.And from this exhibited their dominant effects on the endocrine systems.
Generally, norepinephrine. is specific in mode of actions.It binds to specific receptor at the cell surfaces to produce it effects. Likewise peptide hormones are also receptor specific binding. Thus these are the similarities
Explanation:
The presence of a clot is acceptable in: A. red stopper tubes. B. lavender stopper tubes. C. green stopper tubes. D. light blue stopper tubes.
Answer:
The correct answer is : A. red stopper tubes.
Explanation:
In phlebotomy the red stopper tubes are plastic tubes or container that have a clot forming or clot activator in It instead of anticoagulants, preservatives or material that prevent blood to mix like other blood tubes.
Lavender, purple, light blue or green all have anticoagulant or preservative in them to prevent from clotting the blood. This tube is used for taking serum sample in it for test.
Thus, The correct answer is : A. red stopper tubes.
Would meteorology be a useful science to apply to the study of Mercury the innermost and smallest planet.. Explain !
Answer:
Yes, meteorology could be useful when studying other planets such as Mercury and Mars; atmospheric science has been extended to the field of planetary science and the study of the atmospheres of the planets of the solar system.
It would be ineffective since these two planets have extremely thin atmospheres. They experience very few meteorological processes.
What are meteorological processes?Weather or modifications in the Earth's atmosphere are examples of meteorological phenomena.
If you want to be a meteorologist a weather expert one should pursue a meteorological career. Fog, downpours, tornadoes, and hurricanes are examples of meteorological events.
Meteorology is essential because air quality has an impact on life. First and foremost, weather prediction is critical in urban management.
Cities are preparing for severe weather events such as tornadoes and snowstorms in order to avoid disasters. Second, agriculture relies on long-term weather forecasting.
Thus, as these celestial bodies have extremely thin atmospheres, it would be ineffective. They are subjected to very few meteorological processes.
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animals from the most heavily populated ocean environments tend not to be preserved as fossils because
Answer:
It tends not to lock out enough oxygen to preserve organic material well.
Explanation:
Because some environments are more amenable to fossil preservation, the fossil ... For mineral shells of many marine invertebrates, "fixation" may be as simple ... this medium tends not to lock out enough oxygen to preserve organic material well.
Imagine you are working in a real lab setting and when you test the catalase and water together you see a reaction. What does this tell you?(select all that apply) - catalase is not specific to hydrogen peroxide -posible contaminant in the water causing a reaction -catalase is the negative control -you must complete the experiment again to verify your results
Answer:
-possible contaminant in the water causing a reaction
-you must complete the experiment again to verify your results
Explanation:
The enzyme catalase is present in all living organisms and it functions in the breakdown of the hydrogen peroxide into water (H2O) and oxygen gas (O2).
Catalase is specific to hydrogen peroxide. Catalase and water reaction is seen in the lab test because there is the possibility of water contamination and maybe the reaction is not correctly evaluated, so one must complete the experiment again to verify the result.
Hence, the correct options are 2nd and 4th option.
If you are working in a real lab setting and you found out that testing the catalase using water produced a reaction, it is highly likely that the water is contaminated.
Catalase is an enzyme that is substrate specific and its substrate is hydrogen peroxide. The enzyme breaks down hydrogen peroxide to produce water and oxygen. The latter is often seen as bubbles in reactions and the equation is as follows:
[tex]2H_2O_2 ---> 2H_2O + O_2[/tex]
Ordinarily, catalase will not produce any reaction with water. However, if the water contains a slight amount of hydrogen peroxide, such water might be seen as causing a reaction with catalase.
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Pioneering work in the field of genetics began prior to the 20th century. However, much of the early work relied only upon simple observation
Select the genetics concepts below that were discovered before the year 1900.
a. preservation of beneficial traits
b. the location of genes on chromosomes
c. calculation of Mendelian inheritance
d. the molecular structure of DNA
Answer:
The Genetics Concepts Below That Were Discovered Before The Year 1900 Preservation Of Beneficial Traits The Location Of Genes On Chromosomes Calculation Of Pioneering work in the field of genetics began prior to the 20th century.
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Which of the following is not a functional characteristic of leukocytes?
a) granulosis.
b) diapedesis.
c) ameboid motion.
d) positive chemotaxis.
Answer:Granulosis
Explanation: leukocytes are white blood cell, they are produced from multipotent cells in the bone marrow. They protect the body against infectious disease and foreign invaders.
Granulosis is not a chraracteristic of leaukocytes, it is a rare disease of children that occurrs on the His, cheeks, and chin.
It is characterized by redness, excessive sweating, and small dark red papules.
Your friend Bruce calls in a panic. He has just come from the doctor and been diagnosed with a bacterial infection. The doctor told him not to worry; his B cells will take care of it in no time! Knowing that you are studying the immune response, he is calling to ask you to explain this statement. Is the doctor correct
Answer:
Answered below
Explanation:
B cells are a type of white blood cells of a subtype called lymphocytes. They confer acquired or adaptive immunity. This means that B lymphocytes responses to infective microbes are from the memories of their previous encounter with the microbes or antigens.
B lymphocytes fight bacteria and viruses by making Y-shaped proteins called antibodies. These antibodies are specific for each pathogen encountered. They identify and lock on to the surface of invading pathogenic cells and mark and present them for destruction by other immune cells.
Oftentimes, these antibodies are enough to fight off most bacterial infections that we have and therefore there's no need for extensive treatment with drugs.
The doctor is correct because B cells produce antibodies that recognize harmful bacteria, enabling them to be cleared from the human body.
B cells (also called B lymphocytes) are a fundamental type of white blood cell, which trigger protective antibody responses of the adaptive immune system.The plasma cells developed from a particular B cell generate specific antibodies that recognize specific antigens, which were bound to the B cell, generating immunological memory (i.e., antibody specificity).Antibodies generated by plasma B cells circulate in the bloodstream in order to recognize specific antigens present in bacteria, thereby enabling them to be cleared from the body.In conclusion, the doctor is correct because B cells produce antibodies that recognize harmful bacteria, enabling them to be cleared from the human body.
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Which of the following is major characteristic of fungi that distinguishes them from other eukaryotes? Which of the following is major characteristic of fungi that distinguishes them from other eukaryotes? Cells with nuclei and mitochondria Sessile lifestyle Decomposition of dead organisms Acquiring nutrition through ingestion Nutrient acquisition via external digestion
Answer:
Nutrient acquisition via external digestion is the correct option.
Explanation:
Fungi are group of eukaryotic organisms that have no chlorophyll, heterotrophs, have cell walls made up of chitin and reproduce through spores.
Fungi get their food from organic compounds in the environment.
Fungi acquire their nutrients via external digestion because they did not ingest good substances into their body rather they release digestive enzymes into the food and digest it external. After that the food is absorbed from the external digestion.
Acquisition of nutrients through external digestion distinguishes fungi from other eukaryotes.
What is the mode of nutrition in fungi?Unlike algae fungi are heterotrophic, that is, they depend on food from their surroundings to attain energy. Like plants, they do not carry the process of photosynthesis as they lack chlorophyll. Unlike animals, fungi do not possess the tendency to ingest their food.
Fungi discharge certain kind of digestive enzymes into their food and digest it externally. They captivate the molecules of food, which they get by the process of external digestion. Fungi are able to digest food efficiently due to the presence of long and thread-like projections known as hyphae that surround and grow around the source of food.
Thus, the correct statement is nutrient acquisition through external digestion.
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1. How long has science been taking place?
Answer:
around 3500 to 3000 BCE.
Explanation:
Answer:
the earliest roots of science can be traced to Ancient Egypt and Mesopotamia in around 3500 to 3000 BCE
One popular evolutionary model for the origin of flight in vertebrates is that flight evolved in:_______.
Answer:
skydiving behavior
Explanation:
The flight is an amazing adaptation that consists in the use of aerodynamic forces by flapping the wings. In vertebrates, flight evolved in three independent events: in pterosaurs (i.e., prehistoric winged reptiles), birds, and bats (mammals). In tetrapods, i.e., vertebrates with four legs, it is believed flight had a gliding origin, thereby this feature would have emerged as a consequence of the skydiving behavior necessary to steer the descent.
Which three elements are often found in organic compounds?
Carbon, hydrogen, and oxygen are the three major elements found in organic compounds. Apart from that, nitrogen, phosphorus, etc. are also seen in organic molecules or compounds.
What is an organic molecule?Organic molecule examples are carbohydrates, proteins, lipids, etc. that are found in the bodies of living animals and plants. Carbohydrate molecules, such as glucose, are composed entirely of carbon, hydrogen, and oxygen, whereas proteins are composed entirely of amino acids. Each amino acid is made up of carbon, hydrogen, oxygen, and nitrogen, and a lipid is entirely made up of only carbon and hydrogen.
In organic molecules, these three remain in high proportion, as a result of which they can be easily broken down by the enzymes in our body or by decomposers after death. All three of these enter the atmosphere via the carbon cycle, for example.
Hence Carbon, hydrogen, and oxygen are the three major elements found in organic compounds.
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11. Describe the expedition that took place at Cheve Cave as described in
the "Race to the Center of the Earth" website. What challenges did the team
face?
Answer: Expedition took place to extend the cave beyond its initial limit of exploration
Explanation:
The expedition took place to extend the cave beyond its initial limit of exploration.
Why was the expedition a challenge for the team ?.As the expedition took place at the chevet cave which is described in the ace to the center of the earth. The expedition into the cave was full of challenges and hurdles. The team had to face a lack of oxygen, lack of light, and cold freezing water.
Thus the expedition was beyond the limits to explore the deep and mysterious place of the earth. As the cave is located in southern Mexico has a deepest point of about 1,536 meters and is the world's 11 deepest cave.
Find out more information about the expedition that took.
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Compare plasma emission with fluorescence by indicating what is common and what is different for the two light emitting mechanisms.
Answer:
Plasma is a state of matter, generated when a gas of ions and atoms, have some of their orbital electrons and free electrons removed. Artificially, plasma can be generated by heating an electrically neutral gas, or subjecting the gas to a strong electromagnetic field until the gas becomes increasingly electrically conductive. This excited atoms and ions then emit electromagnetic radiation usually within the visible range, at wavelengths characteristic of the particular gas used, and are confined by a strong magnetic field.
On the other hand, fluorescence occurs when an excited molecule, atom, or subatomic particles like electrons relaxes to a lower energy state (possibly the ground state) by emitting energy in the form of a photon. It may have been directly excited from the ground state by absorbing energy in the form of a photon, subsequently emitting a photon of lower energy as it relaxes back to its initial lower state.
The common characteristics between these two phenomenon is that they both lead to the emission of energy in the form of photons, which is the unit of an electromagnetic energy or wave.
The difference is that plasma emission can only occur at a very high temperature, whereas fluorescence can occur at a wide range of temperatures between high and low temperatures.
If Adenine always pairs with Thymine and Guanine always pairs with Cytosine, what % of
DNA would be made up of Cytosine if 20% was made up of Adenine?
A. 20 B.30 C.40 D.60
Answer:
option b is correct
Explanation:
if adenine is 20% so thymine is also 20% because equal amount thymine and adenine make a base pair the remaining percentage is 60% which is contributed by cytosine and guanine so cytosine contribute 30% and cytosine also contribute 30%
Write one scientific question about the organism in the photo.
Answer:
How does the bird's long beak help it survive?
Explanation:
It could be to crack nuts or to help dig up bugs. This should work unless the question needs to be about cells and stuff.
Answer:
How long can a bird fly before taking a break
Explanation:
Cells A and B receive the same high levels of stimulation, but Cell A shows a lower level of activity relative to Cell B. A likely explanation for this fact is that Cell A
Answer:
Cell A is laterally being inhibited by other neighbouring cells.
Explanation:
Cell A showing lower activity compare to cell B despite both having high simulation is because Cell A is surrounded by neighbouring cells and these neighbouring cells hinder the action potential of cell A through their numerous activity they perform around cell A.
Therefore they restrain the activities of cell A.
Which type of lens can be rotated to select different magnifications?
Answer:
objective lenses
Explanation:
objective lenses with different magnifications, screwed into a circular "nosepiece" which may be rotated to select the required lens.
PLEASE HELP ME ASAP! Cells are dynamic. Which of the following is NOT an example of a cellular process in which weak molecular interactions allow the cell to respond to changing conditions or developmental states in a cell?
Answer:
D
Explanation:
This is a covalent bond and these types of bonds are not weak they are stable bonds that like to stay together
The other options do not work because....
-mitosis it is a cellular response that allows for changes/developments
-plasma membrane expands during during fusion
-after the interaction of codon/anticodon any left over tRNA leaves the mRNA
Thank you! Picture down below!
Answer:
22 ° C
Explanation
Cats are smaller animals than humans. Which would you expect to have a (relatively speaking) more active thyroid glan
Answer:
A final conclusion is not possible from this information
Explanation:
In mammals, the thyroid is an endocrine gland composed of two lobes that are connected by a bridge of tissue referred to as thyroid isthmus. The thyroid gland produces different types of hormones including calcitonin, triiodothyronine and thyroxine. These hormones are known to increase basal metabolism and thus affect metabolic-associated mechanisms including appetite, nutrient absorption and gut motility. However, thyroid hormones are not directly associated with the growth rate. It is important to note that the growth hormones are synthesized by the pituitary gland.
The maintenance of normal volume and composition of extracellular and intracellular fluids is vital to life. List and briefly describe the kinds of homeostasis involved.
Answer:
Fluid Balance, Electrolyte Balance, Acid-Base Balance
Explanation:
The amount of fluids and the quantity of each are vital to the body for it to function properly. This is regulated by three kinds of homeostasis.
1- Fluid Balance : The balance of total liquids between the inside of the body and the outside environment so that the cells don't die.
2- Electrolyte Balance : The amount of electrolytes in the body must be kept at a level where the body's at a healthy pH level so that the nervous system and other functions that rely on neurological paths can continue.
3- Acid-Base Balance : It is required to be at a certain point so that the blood does not harm the kidney's and lungs and they can function properly.
I hope this answer helps.