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Norma-Jean [14]
2 years ago
9

15) naturally occurring variations within a species are mainly the result of

Biology
1 answer:
pychu [463]2 years ago
3 0

Answer:

d mutations and competition

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Proteins are three dimensional molecules made of strands of amino acids (imagine a ball of string). There are 20 different amino
zlopas [31]

Answer:

A series of nonpolar amino acids would most likely be located in the interior region of the tridimensional molecule.

Explanation:

Proteins are formed by linearly arranged amino acids, each with a side chain: the R-group.

Of the 20 different amino acids that compose the proteins, about half of them -10- are non-polar. Their R-groups are not stable if they are in contact with water, meaning that non-polar amino acids are hydrophobic.

When proteins are synthesized, they acquire a three-dimensional structure that makes them more stable. Lineal polypeptides get folded and turn into a shape that makes them more stable in the environment and capable of accomplishing their biological role. When they are in an aqueous media, their bent shape leaves the hydrophilic R-groups in contact with water. The hydrophilic R-groups stick in the center of the polypeptide, facing the protein interior, and avoiding interaction with water.

3 0
3 years ago
What is a testable prediction of the results of an experiment
pentagon [3]
Hypothesis, is the answer
6 0
3 years ago
Read 2 more answers
If a mutation is removed from a population due to either genetic drift or natural selection, it is said to be:
MA_775_DIABLO [31]

Answer:

D) extinct

Explanation:

7 0
3 years ago
Read 2 more answers
Most biologists believe that _____.
MissTica

The right answer is C.

Classically positive interactions or facilitators between species are divided into two broad categories:

- those where the two partners involved benefit from each other: the mutualisms (symbolized by + / +)

- those where one of the two partners makes a profit or an advantage while the other gets nothing from it without being affected negatively: it is the commensalism symbolized by + / 0.


It may be that bacterial commensalism has an interest in its host (the animal) in the sense that it protects against parasites, or on the contrary, it favors their appearance.

6 0
3 years ago
why is it a good idea for a bacterial cell to be abel to use glucose first as an energy source then switch to lactose
olchik [2.2K]

Answer:

Due to less steps and requires less energy.

Explanation:

The bacterial cell is able to use glucose first as an energy source then switch to lactose because glucose requires less steps and less amount of energy for the break down as compared to lactose. If lactose is the only sugar available to the bacterial cells, then bacterial cells will use it as energy source for the production of energy. In order to use lactose, the bacteria must express the lac operon genes, which encode the main enzymes for lactose uptake and metabolism.

8 0
2 years ago
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