The earliest technique for examining the living human brain involved the study of a)head injuries.So,correct option is a.
Researchers utilize numerous strategies to concentrate on the brain's structure and capacities.. They take pictures of solid cerebrums and contrast them with infected minds. Likewise, they look at cerebrums taken from people, primates and little warm blooded creatures and attempt to comprehend how spineless creatures' more modest sensory systems work. On a tiny level, they likewise look at neurons.
Some of the techniques by which living brain is examined:
Electroencephalography (EEG) shows electrically dynamic areas in the mind utilizing locators embedded in the cerebrum or worn on a cap.Positron outflow tomography (PET) takes pictures of radioactive markers in the mind.Useful X-ray (fMRI) shows pictures of mind movement while subjects work on different undertakings.Pharmacological useful X-ray (phMRI) shows mind movement as medications are regulated.Hence,correct option is a.
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(Complete question) is:
the earliest technique for examining the living human brain involved the study of: answer choices a)head injuries. b)glucose production. c)soft tissue. d)electrical activity.
jane consumed a breakfast that contained 85 grams of carbohydrate, 20 grams of protein, and 18 grams of fat. how many kilocalories did jane eat at breakfast? group of answer choices 582 kilocalories
The total number of kilocalories Jane ate at breakfast will be 582 kilocalories. Option C is correct.
In 1 gram of fat, we having 9kilocalories of energy contribution.
1 gram of carbohydrate, we having 4kilocalories of energy contribution
1 gram of protein, we having 4kilocalories of energy contribution.
Jane consumed 85 grams of carbohydrate, which contains 85 grams x 4 kilocalories/gram = 340 kilocalories.
She consumed 20 grams of protein, which contains 20 grams x 4 kilocalories/gram = 80 kilocalories.
And she consumed 18 grams of fat, which contains 18 grams x 9 kilocalories/gram = 162 kilocalories.
So, the total number of kilocalories Jane ate at breakfast was 340 + 80 + 162 = 582 kilocalories.
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--The given question is incomplete, the complete question is
"Jane consumed a breakfast that contained 85 grams of carbohydrate, 20 grams of protein, and 18 grams of fat. How many kilocalories did Jane eat at breakfast? A) 123 kilocalories B) 1,007 kilocalories C) 582 kilocalories D) 152 kilocalories"--
Physical interventions to interrupt or reduce the spread of respiratory viruses is called:_________
Physical interventions to interrupt or reduce the spread of respiratory viruses are commonly referred to as "infection control measures" or "infection prevention and control (IPC) measures".
What is Infection prevention and control (IPC) measures?Infection prevention and control (IPC) measures are a set of strategies and practices aimed at reducing the risk of transmission of infectious diseases in healthcare settings. These measures include hand hygiene, wearing masks, respiratory etiquette, environmental cleaning and disinfection, and vaccination. IPC measures also involve implementing policies and procedures to prevent the spread of infectious diseases, as well as educating healthcare workers, patients, and their families about the importance of infection control. The goal of IPC measures is to protect individuals, especially those at higher risk of severe illness, from contracting infectious diseases and to reduce the transmission of infections within healthcare settings. Effective IPC measures are essential for maintaining a safe and healthy environment for patients, healthcare workers, and the community.
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which of the following is not a function of skeletal striated muscle? multiple choice body movement production of hormones maintenance of posture respiration production of heat
D) Production of heat is not a function of skeletal striated muscle.
Skeletal muscle paly a vital role in daily needs of an human . the prime functions of skeletal muscle is to be able to contract and produce desired movement, they also helps in maintaining the body posture and position, they are responsible for storing nutrients and helps to stabilize the joints.
Hence , The major functions of muscle tissues include encouraging of the movement in the body structures, movement of blood throughout the body, stabilizing joints also contraction and relaxation of muscles and joints .
Hence ,D is the correct option
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what is the difference between complete and incomplete proteins?
When a diet contains all nine essential amino acids, which our bodies need but are unable to manufacture on their own, we refer to that item as a "complete protein." In contrast, incomplete proteins include some of the necessary amino acids, but not all of them, and in varying quantities than complete proteins.
All foods derived from animals, such as meat, dairy products, and eggs, are considered to be complete sources of protein, as stated by Harvard Health Publishing. The vast majority of plant-based protein sources, including spinach, broccoli, and mushrooms, as well as whole grains, legumes, seeds, and nuts, are deficient in essential amino acids.
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in dogs, curly hair (d) is dominant over smooth hair (d). two curly dogs produce a smooth-haired puppy. which genotypes best describe the parents?
In dogs, the gene for curly hair (C) is dominant over the gene for smooth hair (c). If two curly-haired dogs (C/C) produce a smooth-haired puppy (c/c), it suggests that genotype in both parents were heterozygous for the hair type gene (C/c).
The dominant-recessive link between the C and c alleles can be used to explain this outcome. Each offspring of two heterozygous dogs (C/c) has a 50% chance of getting either the dominant C allele from one parent or the recessive c allele from the other. In this instance, the smooth-haired puppy (c/c) expressed the smooth hair phenotype due to inheriting two copies of the recessive c allele.
The genotype of the parents can be deduced from the phenotype of the offspring, but without additional genetic testing, it is not possible to know the precise combination of alleles that each parent contributed to the offspring.
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When Mendel crossed the pollen from a plant with green pods with a plant with yellow seed pods, all of the offspring had green seed pods. This told him that (type here) seed pods were dominant over (type here) seed pods
When Mendel crossed the pollen from a plant with green pods with a plant with yellow seed pods and observed that all of the offspring had green seed pods, he concluded that green seed pods were dominant over yellow seed pods.
This observation led Mendel to develop his theory of inheritance, which is now known as Mendel's laws of inheritance. Mendel's laws state that traits are passed from parent to offspring as discrete units, now known as genes, and that one form of a gene (allele) can dominate over another.
In this case, the green seed pod allele was dominant over the yellow seed pod allele, which means that when the two alleles were present together, the green seed pod trait was expressed.
Mendel's experiments with pea plants helped to lay the foundation for the field of genetics, which is the study of how traits are passed from one generation to the next. The laws of inheritance that Mendel discovered are still used today to explain the transmission of traits in organisms, including humans.
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let's say that two people (both heterozygotes) can taste a chemical substance called ptc. the ability to taste ptc is caused by a dominant allele (a). the inability to taste ptc is caused by a recessive allele (a). what proportion of the children of a cross between aa x aa would be expected not to taste ptc?
0% of their descendants proportion of the children of a cross between aa x aa would be expected not to taste ptc
A single gene with two alleles—the dominant allele "A" and the recessive allele "a"—determines the capacity to taste PTC. A person can taste PTC if they have two copies of the dominant allele "AA." A person cannot taste PTC if they carry two copies of the recessive gene "aa." A person may taste PTC if they possess one copy of each "Aa" allele.
When two heterozygotes "Aa" are bred, half of the progeny will have the dominant gene "A" and the other half will carry the recessive allele "a". Therefore, it is projected that 0% of their descendants would not taste PTC.
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calculate the nerst potential for k when the k concentration in the extracellular media changed from the normal
With this information, we can calculate the Nernst potential for potassium at various extracellular potassium concentrations: are E = -0.077 V, -0.051 V, -0.037 V and -0.025 V respectively.
What is the Nernst equation?Given that the normal concentration of potassium ions inside a muscle cell is 155 mM, we can use the Nernst equation to calculate the Nernst potential for potassium when the extracellular potassium concentration changes from the normal value.
The Nernst equation is:
[tex]E = ((RT)/(zF)) * ln([K+]out/[K+]in)[/tex]
where:
E is the Nernst potential in volts (V)
R is the gas constant (8.314 J/mol*K)
T is the temperature in Kelvin (K) (assumed to be 298 K)
z is the charge on the ion species (for K+, z = +1)
F is the Faraday constant (96,485 C/mol)
[K+]out and [K+]in are the concentrations of potassium ions outside and inside the cell, respectively.
With this information, we can calculate the Nernst potential for potassium at various extracellular potassium concentrations:
[tex][K+]out = 0.1 mM, [K+]in = 155 mME = ((RT)/(zF)) × ln(0.1/155)E = -0.077 V[K+]out = 10 mM, [K+]in = 155 mME = ((RT)/(zF)) × ln(10/155)E = -0.051 V[K+]out = 20 mM, [K+]in = 155 mME = ((RT)/(zF)) × ln(20/155)E = -0.037 V[K+]out = 40 mM, [K+]in = 155 mME = ((RT)/(zF)) × ln (40/155)[/tex]
E = -0.025 V
We can plot these values of the Nernst potential against the extracellular potassium concentration on a graph with the logarithmic scale on the x-axis. The slope of this curve is negative and represents the ion permeability of the membrane to potassium ions, which is directly proportional to the Nernst potential.
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which insect does not feed as an adult? group of answer choices dragonfly grasshopper mayfly housefly
Of the insects listed, the mayfly does not feed as an adult. Mayflies undergo a complete metamorphosis, and the adult stage is a brief stage during which the insects do not feed and only mate and lay eggs.
The larvae of mayflies are aquatic and feed on aquatic plants and small animals, but once they undergo metamorphosis into adults, they lose their mouthparts and cannot feed.
The other insects listed, dragonflies, grasshoppers, and houseflies, all feed as adults. Dragonflies feed on other insects, grasshoppers feed on plants, and houseflies feed on a variety of substances, including rotting food and other organic matter.
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which of the following accurately represents a carbon source and the process that releases carbon from that source? group of answer choices fossil fuels, respiration animals, photosynthesis plants, cellular respiration bicarbonate, combustion
A carbon source and the procedure for releasing carbon from that source, respectively, are accurately represented by plants and cellular respiration.
Through photosynthesis, which produces glucose (C6H12O6), plants make food. The resulting glucose serves as a carbon source for ecosystem organisms.
When fossil fuels like coal and crude oil are burned or used in vehicles, industries, and other applications, they release a significant amount of carbon into the atmosphere.
As a result, plants and cellular respiration. is the best option.
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if individuals move from one population to another, it may cause a shift in allele frequencies due to
If individuals move from one population to another, it may cause a shift in allele frequencies due to genetic drift.
The term "genetic drift" refers to the process through which allele frequencies within a population shift from one generation to the next solely as a result of random chance brought on by sampling error. The random process of genetic drift has the potential to bring about significant changes in populations in a relatively short amount of time.
Changes in allele frequencies can be attributed to several different processes, the most prominent of which are natural selection, genetic drift, and gene flow. When the Hardy-Weinberg assumptions are violated by a population because of the presence of one or more of these forces, evolution can be said to have taken place in that population.
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on some islands, during the mating season, birds compete intensely for breeding sites. on these islands, these breeding sites represent a(n)
On some islands, during the mating season, birds compete intensely for breeding sites. on these islands, these breeding sites represent a(n) limiting factor.
An ecosystem is an ecological cycle in which a reciprocal reaction occurs between living things and their environment. In an ecosystem there is an environment in which an organism can grow and develop. Environmental factors such as limiting factors can affect life to be able to grow and develop.
Limiting factors are factors in the form of abiotic components that determine whether organisms can live and develop in an ecosystem. Examples of limiting factors are water, light, air, temperature, climate, and place of residence. In the process of mating birds on an island where breeding is a limiting factor for birds to do marriage. Because the number of breeding places is limited, if a bird manages to get it, it will mate, if it doesn't get it, the bird is in danger of not being able to mate.
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an ecosystem is: earth's entire living environment. interdependent living creatures, plants, forces of nature, and non-living habitats. the specific physical surroundings where a group of creatures live. members of a single species that all live in the same location.
An ecosystem is a location where different types of living things coexist to create a bubble of life, including plants, animals, and other species.
Ecosystems are made up of both biotic (or alive) and abiotic (or nonliving) components. The ecosystem is a group of living things that includes both living and non-living elements of their surroundings and interacts as a whole. An ecosystem is a group of living and nonliving creatures that interact with one another. Nonliving things do not eat, grow, or have children. Light, water, air, wind, and rocks are some examples of significant nonliving elements in an ecosystem. Life is characterised by growth, change, waste production, reproduction, and death.
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What is Ecosystem ?
What type of stress is strike-slip fault?
A strike-slip fault is a type of tectonic stress associated with lateral movement.
In a strike-slip fault, the two sides of the fault move horizontally past each other, typically in a horizontal direction. This type of movement is caused by shear stress, which occurs when two masses of rock are subjected to opposite horizontal forces.
Strike-slip faults are commonly found in areas where tectonic plates are moving past each other, such as along the San Andreas fault in California. They can also be found in regions with transform plate boundaries, where two plates are moving in opposite directions parallel to each other.
The movement along strike-slip faults can cause earthquakes, and they are often associated with some of the most intense and destructive earthquakes in the world.
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25 points for your thinking
Please help it’s for biology
Answer:
photosynthesis works best at the top of the graph
Explanation:
write this
the optimum rate for photosynthesis is shown in the graph at the very top
Does a human's body temperature change due to temperature changes at the
extremities or changes in ambient temperature?
Make a claim based on the evidence.
What is the answer to your question based on your evidence?
Answer: The distribution of skin temperature throughout the body is not uniform (i.e. lower in the extremities than in the trunk) and it also changes with environmental temperature (i.e. it is higher in summer than in winter).
Explanation: The human body regulates body temperature through a process called thermoregulation, in which the body can maintain its temperature within certain boundaries, even when the surrounding temperature is very different. The core temperature of the body remains steady at around 36.5–37.5 °C (or 97.7–99.5 °F).
HELP ASAP!!!
Study the following mRNA strand:
mRNA =
AUGGUCGCAGUAUAG
How many codons are present?
A. 3
B. 7
C. 15
D. 5
In the given mRNA strand, 5 codons are present which are AUG, GUC, GCA, GUA and UAG.
The correct option is option D.
The mRNA present in our body is translated to produce a protein which contains certain amino acids and is used to perform certain function in our body. Each amino acid has a unique triplet code or codon. These codons are unique and do not overlap with each other.
Each group of the three bases present in the mRNA constitute of a codon, and each of these codon happens tp specify a particular amino acid. The mRNA sequence is therefore used as a template to produce a chain of amino acids which form a protein. In the given mRNA strand : AUGGUCGCAGUAUAG, 5 codons are present which are AUG, GUC, GCA, GUA and UAG.
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Can someone help me rq with this
From the table, we can conclude that two organism that most closely related are Lion and Tiger.
To see the kinship of plants or animals, we can use a taxonomic system, which is a system of grouping animals or plants based on their level. The goal is to make it easier to recognize living things based on similarities or differences in appearance.
The closeness of a creature's relationship can be seen from the taxonomic order from the highest to the lowest level: Kingdom, Phylum, Class, Order, Familia, Genus, Species.
Based on the order, the table above shows that lions and tigers belong to the genus Panthera, so that their closest relatives are lion (Panthera leo) and tiger (Panthera tigris).
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If your stomach produces too much acid, you can take a substance that is a________ to neutralize it.
Answer:base
Explanation:
base neutralize out acid
Can someone help me with question 2
Competitive relationship results into resource partitioning of the available resources for the two bird species.
What are Competitive relationships between species?
Competition is a type of species interaction which most typically considered as the interaction of individuals which vie for a common resource which is in limited supply, however more generally can be defined as the direct or indirect interaction of the organisms that leads to a change in fitness when the organisms share the same resource as required.
When two species living in same ecosystem and feed on the same resource then, the species will show resource partitioning and feed on the plant or organism at different time slots.
A species' niche encompasses both the physical conditions as well as the environmental conditions which it requires like the temperature or terrain and the interactions which the species has with the other species like predation or competition.
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Use Models Photosynthesis usually produces glucose (CH1206)
as a final product. What are the sources of the carbon atoms and hydrogen atoms in glucose? Use a symbolic equation as a model to support your explanation.
The equation of the photosynthesis is;
6CO2 + 6H2O → C6H12O6 + 6O2.
What is photosynthesis?Photosynthesis is the process by which green plants and some other organisms convert light energy into chemical energy in the form of glucose (sugar). This process occurs in chloroplasts, specialized structures found in the leaves of green plants, and involves the absorption of light by pigments such as chlorophyll.
The energy from light is used to convert carbon dioxide (CO2) and water (H2O) into glucose and oxygen (O2), which is released into the air. Photosynthesis is an essential biological process that provides the basis for almost all life on earth and helps regulate the planet's atmosphere and climate.
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how many times does a contractile vacuole contract in one minute?
In one minute, the contractile vacuole could contract anywhere from zero to three times.
The contractile vacuole is a sub-cellular structure found predominantly in protists and unicellular algae that helps to regulate the quantity of water inside a cell.
In freshwater environments, the concentration of solutes is hypotonic, lesser outside than inside the cell. Under these conditions, osmosis causes water to accumulate in the cell from the external environment. The contractile vacuole expels water out of the cell by contracting.
The growth (water gathering) and contraction (water expulsion) of the contractile vacuole are periodical. One cycle takes several seconds, depending on the species and the environment's osmolarity. The stage in which water flows into the CV is called diastole.
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The symbols IA, IB, and i represent blood types A, B, and O respectively, where I stands for dominant and i stands for recessive. Which Punnett square represents the cross between a woman with both A and B antigens and a man that has neither A nor B antigens?
A.
IA IB
i IAi IBi
i IAi IBi
B.
IA IB
i iAI IBi
i IAi IBi
C.
IA IA
IB IAIB IAIB
IB IAIB IAIB
D.
IB i
IA IAIB IAi
i IBi ii
[tex]I^A[/tex] [tex]I^B[/tex]
i [tex]I^Ai[/tex] [tex]I^Bi[/tex]
i [tex]I^Ai[/tex] [tex]I^Bi[/tex]
represents the cross between a woman with both A and B antigens and a man that has neither A nor B antigens. So, the correct option is A.
What is Blood grouping?A blood type is defined as a classification of blood that is based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells. These antigens can be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the blood group system.
Blood group antigens are encapsulated as either sugars or proteins, and they bind to various components in the red blood cell membrane.
Therefore, the correct option is A.
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the idea that enzymes undergo conformational changes upon substrate binding in order to bring specific functional groups into the correct catalytic orientation is described as the:
The idea that enzymes undergo conformational changes upon substrate binding in order to bring specific functional groups into the correct catalytic orientation is described as the: induced-fit model.
Enzymes are the biological catalysts present inside the living body. These are proteinaceous structure that enhance the rate of chemical reactions and accomplish them within seconds. The enzymes are able to do so by lowering down the activation energy.
Substrates are the molecules upon which the enzyme acts and results in the formation of products. The substrate binds over the active site of the enzyme and undergoes transformation, yielding the desired product.
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2. Which of the following statements about infrared light is TRUE? Choose all that apply. A It is visible light that human eyes can see. B It can be detected as heat. C It has a shorter wavelength than visible light. DIt is given off by stars.
B."It can be detected as heat" and D."it is given off by stars" statements about infrared light are true.
An electromagnetic radiation that cannot be seen by the human eye is infrared light. Although it does not fall within the visible light spectrum, it is a form of energy that is still a component of the electromagnetic spectrum. The range of visible light is only surpassed by infrared light, which has longer wavelengths than visible light.
Out of the given options, the following statements about infrared light are true:
B. It can be detected as heat - Infrared light is often associated with heat and is used to detect heat sources. Infrared cameras can be used to measure the heat being emitted by objects, and this information is used in various applications such as in building insulation and temperature regulation, medical diagnosis, and military surveillance.
D. It is given off by stars - Infrared light is emitted by stars and is used by astronomers to study star formation, dust, and the properties of galaxies. Infrared telescopes are used to observe the universe in the infrared spectrum and provide information that is not visible in visible light.
In conclusion, infrared light is not visible to the human eye, has a longer wavelength than visible light, and can be detected as heat and is given off by stars.
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What characteristics are shared by animals and fungi? Check all that apply.
-Derived from protists
-Absorptive nutrition
-Secrete digestive enzymes
Overall, while animals and fungi have many differences in their physical and biological characteristics, they do share some fundamental similarities, including their evolutionary origins from protists, their absorptive mode of nutrition, and their ability to secrete digestive enzymes.
Animals and fungi are two distinct kingdoms of living organisms. However, they do share some similarities in their characteristics. One such similarity is that both animals and fungi evolved from protists, which are single-celled organisms.
Another shared characteristic between animals and fungi is their mode of nutrition. Both groups use absorptive nutrition, which means they obtain nutrients by absorbing dissolved organic matter from their environment. This is in contrast to plants, which use photosynthesis to produce their own food.
Furthermore, both animals and fungi are known to secrete digestive enzymes. These enzymes break down complex organic molecules into smaller, simpler compounds that can be absorbed and used for energy.
In animals, digestive enzymes are typically produced by specialized organs such as the stomach and pancreas, whereas in fungi, they are secreted externally and then absorbed back into the organism.
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according to the endosymbiosis theory, what are the origins of the inner and outer membranes of mitochondria?
According to the endosymbiosis theory the mitochondrial external membrane is probably a direct assignee of the alphaproteobacterial external membrane and the host's endocytotic tube membrane since mitochondria developed through the endosymbiosis of a eukaryotic host and an alphaproteobacterium.
The original bacterium that was swallowed by the host bacterium handed both the inner and external membranes. The inner membrane is deduced from the original bacterium, and the external membrane is deduced from the host cell that gulfed the bacterium through endocytosis. The external membrane is deduced from the original bacterium.
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Question: Place The Steps Of Eukaryotic Transcription In Order Of Occurrence. RNA Polymerase II Binds DNA Promoter Element. Processed MRNA Leaves The Nucleus Ribonudeotides Align With Complementary DNA Nucleotides. Guanylyl Transferase Adds A Guanine Cap To The 5' End Of The MRNA. RNA Polymerase Unwinds DNA. RNA Polymerase Is Released From DNA. The MRNA Is
The steps of eukaryotic transcription in order of occurrence:
1. DNA is unzipped by RNA polymerase.
2. Ribonucleotides align with complementary DNA nucleotides.
3. RNA polymerase links triphosphate ribonucleotides together.
4. Guanylyl transferase adds a guanine cap to the 5' end of the mRNA.
5. RNA polymerase is released from DNA.
6. The mRNA is polyadenylated and spliced.
Trаnscription is the process in which а gene's DNА sequence is copied (trаnscribed) to mаke аn RNА molecule. RNА polymerаse is the mаin trаnscription enzyme. Trаnscription begins when RNА polymerаse binds to а promoter sequence neаr the beginning of а gene (directly or through helper proteins). RNА polymerаse uses one of the DNА strаnds (the templаte strаnd) аs а templаte to mаke а new, complementаry RNА molecule. Trаnscription ends in а process cаlled terminаtion. Terminаtion depends on sequences in the RNА, which signаl thаt the trаnscript is finished.
Your question is incomplete, but most probably your full question can be seen in the Attachment.
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How are chromosomes of an offspring related to that of a parent?
An organism's chromosomes come from the parents. They get some mutations, but they are copies of the parents.
Assignment: Desert Ecosystem Exploration
Refer to the aquarium environment image to answer the questions.
Desert Ecosystem
1. which biotic factors do you see in the photo?
2. which abiotic factors can you detect in this photo?
3. in what ways does one biotic factor interact with the abiotic factors?
Answer:
1. The biotic factors seen in the photo include various species of cacti, shrubs, and succulents.
2. The abiotic factors detected in the photo include light, temperature, soil, and water.
3. The biotic factors interact with abiotic factors in many ways. For example, cacti and other desert plants need light, water, and soil to survive, while their leaves and stems help to regulate temperature and prevent water loss. In addition, the presence of plants can alter the soil composition by adding organic matter and nitrogen, both of which are important for sustaining life in the desert.