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nordsb [41]
2 years ago
6

Which list of countries arranged least to most in terms of how much of their income they spent on food

Biology
1 answer:
wolverine [178]2 years ago
7 0

Answer:

is number three

Explanation:

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The host range of a virus is determined by A. whether the glycoproteins or capsid proteins on its surface recognize those of the
Marina CMI [18]

Answer:

A. whether the glycoproteins or capsid proteins on its surface recognize those of the host cells.

Explanation:

Virus has different surface proteins that are recognized by the receptors present on its host cell. The range of a virus is determined by the recognition of these proteins by the host cell.

The interaction between the receptor on the host cell and surface proteins on the viral capsid is important for viral genome entry in the host cell and to determine the range of the host cells.

If the surface protein of the virus is not able to bind to the receptor on any cell then the virus can not infect the cell. For example, the HIV virus infects only those cell which have CD4 receptors. So the right answer is A.

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3 years ago
What are reasons scientists use models?
vlada-n [284]

Answer:

To study objects that are way too small

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3 years ago
Please what is meant by photosynthesis​
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Answer:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities. Some of this chemical energy is stored in carbohydrate molecules, such as sugars and starches, which are synthesized from carbon dioxide and water, In most cases, oxygen is also released as a waste product that stores three times more chemical energy than the carbohydrates. Most plants, algae, and cyanobacteria perform photosynthesis; such organisms are called photoautotrophs. Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere, and supplies most of the energy necessary for life on Earth.

Explanation:

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When a  muscle receives nerve signal contracts and pulls on a tendon.
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Briefly explain why only chromosomes of a homologous pair can have their alleles referred toas homozygous or heterozygous
tatuchka [14]

This is due to the fact that only homologous chromosomes would have identical genes located at identical sites on those chromosomes. Otherwise, there would be no connection between the alleles of various genes.

Although the genes and loci of the two members of the homologous pair are similar, the alleles may vary.For instance, both allele possess the genes responsible for the attribute of eye colour. While the one has alleles for the blue-eye trait, other has alleles for the brown-eye trait. The homologous chromosomes are said to be heterozygous in this instance since the alleles are different.

On the other hand, when both alleles for a gene that codes for the blue-eye phenotype are present, it is said to be homozygous.

To learn more about homologous chromosomes click here

brainly.com/question/27258467

#SPJ4

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