The function of most proteins depends primarily on the what?

Biology

1 answer:

miv72 [106K]2 years ago

3 0

Answer:

The function of a protein is directly dependent on its threedimensional structure (Figure 3.1). Remarkably, proteins spontaneously fold up into three-dimensional structures that are determined by the sequence of amino acids in the protein polymer.

Explanation:

my answer

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Before a cell can divide, it must copy its DNA one ___________ at a time in a process called DNA replication. A) base B) sugar C

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Which of the following statement(s) is/are TRUE about Red Blood Cells (RBCs)? a) A normal RBC has a nucleus RBCs' production is

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Answer:

RBCs' production is controlled by erythropoietin.

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Explanation:

The hormone erythropoietin is produced and released in the bloodstream by peritubular interstitial cells of kidneys. The function of erythropoietin is to increase the number of the precursors of red blood cells and thereby to stimulate the production of red blood cells in the bone marrow. When the oxygen supply to body cells is reduced, the hormone erythropoietin stimulates the development of proerythroblasts into reticulocytes and thereby increases the RBC production.

RBCs are produced by the process of erythropoiesis and take about seven days to become mature and to be released in circulation to serve the function of oxygen delivery. The maturation of RBCs also includes the loss of most of the organelles such as the nucleus and mitochondria to accommodate hemoglobin protein. The life span of circulating RBCs is about 100-120 days.

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? Question is a to A population of organisms is represented by three black marbles and three gray marbles. The gray organis have

BigorU [14]

Question:

A population of organisms is represented by three black marbles and three gray marbles. The gray organisms have a beneficial genetic mutation. Draw a model that shows natural selection over three generations of these organisms

Answer:

lThe population will suffer Directional selection. In the attached files you will find the drawing of the model.

Explanation:

Natural selection is the result of the phenotype-environment interaction which determines gene destiny in space and time, selecting beneficial alleles and increasing their frequency in the population. Among other types of natural selection, we can find the directional selection.

Directional selection increases in the proportion of individuals with an extreme phenotypic trait, in this case, the color of the organisms. This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.

Directional selection leads to the fixation of the beneficial allele and the consequent loss of the other one. In this case, for example, the gray suffered a beneficial mutation, and after three generations the allele codifying for this mutation shows an increase in its frequency, approaching fixation.