Which component of peanut butter rutf supplies essential amino acids?

Which of these best describes genetic drift? A) The movement of alleles between population B) Random fluctuations in the gene fr

exis [7]

The correct answer is B.
Genetic drift is one of the four evolutionary mechanisms. It changes the frequency by chance, aka at random.
For example. if you have 100 frogs in the population, 20 red, 20 green and 60 yellow, not all of the alleles are going to be passed down to the next generation because a portion of the population can be affected by a random event such as the flood. So, if the flood accidentally kills 20 red frogs, none of the offspring are going to be red by chance.

6 0

3 years ago

Following a meal glucose must move from the gut lumen where there is a high glucose concentration into the intestinal cell where

Alchen [17]

This movement from a high concentration area to a low concentration are is called Active transport.

<h3>Active Transport</h3>

Active transport by definition is a process that is characterized by the movement of molecules against a concentration gradient. Additionally, this process requires energy.

As in the question above, glucose molecules have to be moved across the gut lumen of higher glucose concentration to the intestinal cells of relatively low level of glucose.

Read more on active transport;

brainly.com/question/18489506

5 0

1 year ago

During metabolism the complete of one molecule of glucose results in a maximum yield if 38 molecules of

Bond [772]

During cellular respiration, which is a part of metabolism, one molecule of glucose produces a maximum yield of 38 molecules of ATP (adenosine triphosphate). ATP is the energy form that cells use to function and has also been often called the "currency" of the cells.

The whole process begins with breakdown of food by the digestive system right down to their monomer units. Carbohydrates are broken down into glucose, which is carried by blood to all cells of the body.

Each cell takes in glucose and breaks it down through the respiration process that begins with glycolysis in the cytoplasm which yields 2 ATP molecules, then onward into the mitochondria of the cell where Krebs cycle and electron transport chain processes generate 34 to 36 more molecules of ATP.

8 0

2 years ago

Which type of organism is the simplest?

zysi [14]

A. Sponges
They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like Mesohly sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohly in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes.

3 0

3 years ago

Read 2 more answers

Dihybrid crosses can be used to predict two independent alleles in the future generation. In echidnas, the allele for brown fur

Mrac [35]

Answer:

25% of the offsprings will be BBCC

Explanation:

This is a typical dihybrid cross involving two distinct genes. One coding for fur colour and the other for claw sharpness. The allele for brown fur (B) is dominant over the allele for black fur (b) in the first gene while the allele for sharp claws (C) is dominant over the allele for dull claws (c) in the second gene.

In a cross between parents with genotypes: BbCc x BBCC , each parent will produce four possible allelic combinations of gametes as follows:

BbCc: BC, Bc, bC, bc

BBCC: BC, BC, BC, BC

Using these gametes in a punnet square (see attached image), 16 possible offsprings will be produced with four distinct genotypes:

BBCC (4)

BBCc (4)

BbCC (4)

BbCc (4)

According to the question, an offspring that is homozygous dominant for both traits will possess a genotype: BBCC

N.B: Homozygous dominant means contains same alleles for the dominant trait.

Hence, offsprings with genotype, BBCC, from this cross are expected to be 4 out of the 16 possible offsprings. Hence, the percentage is 4/16 × 100 = 25%.

8 0

3 years ago