All categories

4 years ago

This is a process by which substances are transported across cell membranes by means of protein carrier molecules.

Biology

2 answers:

svlad2 [7]4 years ago

4 0

Answer:

Facilitate diffusion is the process in which substances are transported across the plasma membrane along the concentration gradient with the help of carrier molecules.

In active transport also carrier proteins are used but they are used to transport the molecules against the concentration gradient.

Carrier proteins bind the molecules to be transported non-covalently and after binding, it undergoes a conformational change which helps in the movement of the molecule through the protein inside the cytoplasm of the cell.

Charged and polar molecules are mainly passed through facilitated diffusion like amino acids, carbohydrates, ions. The rate of transfer of molecules across the plasma membrane is higher in facilitated diffusion than simple diffusion.

patriot [66]4 years ago

3 0

This should be "(primary) active transport", transportation that requires ATP energy (and possibly carriers).

You might be interested in

Cells use ATP as a source of energy to carry out various functions within the cell. In order for ATP to be useful, a chemical re

Alex

The lack of water in the cell's mitochondria

8 0

3 years ago

Read 2 more answers

What does the horizontal line between<br> the male and female represent?

lapo4ka [179]

Answer:

it represents the mating between males and females is shown by a horizontal line between their respective symbols.

Explanation:

3 0

3 years ago

n this project, you will analyze claims about the causes of inherited genetic variation. You will then make your own claim based

valina [46]

Answer:

See below

Explanation:

There are several reasons that genetic variation occurs. Some of them are as follows: mutation, random fertilization, recombination event during meiosis etc. The way in which this variation in genetics is distributed is in a continuous way. In case of the human species, it is reported that 85% of all variation is within a certain population, while the remaining 15% of genetic variation is between populations.

6 0

3 years ago

Why do scientist use the light year instead of astronomical units to measure the distance between stars ?

Evgesh-ka [11]

Astronomers use light years to measure distances in space because space is so massive and distances so far that conventional numbering is inadequate and unmanageable. One light year is a distance measurement equivalent to six trillion miles.

6 0

3 years ago

Read 2 more answers

Red-green color blindness is inherited as an X-linked recessive (Xc). If a color-blind man marries a woman who is heterozygous f

skad [1K]

Answer:

25% colorblind daughter: 25% colorblind son: 25% carrier daughters with normal vision: 25% normal son.

Explanation:

The genotype of a color-blind man is X^cY and the genotype of the heterozygous carrier female is X^cX. A cross between X^cY and X^cX would produce a progeny in following ratio=

25% colorblind daughter: 25% colorblind son: 25% carrier daughters with normal vision: 25% normal son.

Therefore, the couple is likely to have 50% normal son and 50% affected son. Likewise, the couple is likely to have 50% normal daughters and 50% colorblind daughters.

3 0

3 years ago