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Agata [3.3K]
3 years ago
13

Cell membranes are selectively permeable, regulating which substances can pass through, as well as how much of each substance ca

n enter or exit at a given time. In cells, some molecules can move down their concentration gradients by crossing the phospholipid portion of the membrane directly, while others must pass through membrane proteins. Which of these statements does NOT apply to facilitated diffusion?
Biology
1 answer:
Veseljchak [2.6K]3 years ago
4 0

Answer:A=V

Explanation:

It is used to move small or non polar molecules does not apply to facilitated diffusion. Small, non-polar molecules can diffuse directly across the phospholipid bilayer.

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If you know the genotypes of the parents, what can you use to determine the possible genotypes of the offspring
Marianna [84]
You can use punnet squares to see possible percentages of genes of the offspring
3 0
3 years ago
Read 2 more answers
The organ above is responsible for filtering wastes from the digestion of proteins and cleaning the blood of excess salts. It is
wel

Answer:

The organ above is responsible for filtering wastes from the digestion of proteins and cleaning the blood of excess salts. It is found in the lower back. It is the <u>kidney </u> and is part of the <u>excretory</u> system.

Explanation:

Kidneys are a pair of a bean-shaped organ which are located in the back abdominal area, under the rib cage. The major function of kidneys is to filter waste from the blood. The waste materials from the food we consume is filtered by the kidneys. Other functions of the kidney include maintaining the fluid balance of the body.

The kidney is one of the major organ of the excretory system along with the ureters and urinary bladder.

5 0
3 years ago
Due to hunting, the population of Northern elephant seals was reduced to 20 individuals at the end of the 19th century. Since th
anygoal [31]

Answer:

Option C

Explanation:

Long term hunting has led to following  

a) Reduction in population size and hence the gene pool

b) Causation of Bottleneck effect

Due to above factors, the remaining population of Northern elephant seals does not represent the original genetic problem.  

Due to this restriction in mating and genetic variation shall prevail pertaining to reduced gene pool.  

Due to continuous hunting, the gene pool will further shrink, leading to genetic similarity among the organism

Option C is correct

8 0
3 years ago
What levels of organ organization is shown in a human heart
dalvyx [7]
I am like 99% sure  its organ , try that and see if it works :)
8 0
3 years ago
Two true-breeding stocks of pea plants are crossed. one parent has red, axial flowers and theother has white, terminal flowers;
xxTIMURxx [149]
This is a typical case of a dihybrid cross. 
From the phenotype of the offspring, we can conclude that the gene for the red color of the flower and the gene for the axial position of the flower are dominant.
Since we know that the ratio of phenotypes in a dihybrid cross of independently inherited alleles is
9(dominant for both traits)
3(dominant for one trait, recessive for the other)
3(dominant for the second trait, recessive for the other)
1(recessive for both traits)
we can expect 3/16 of the f2 generation to be dominamt for one trait and recessive for the other (red, terminal flowers), or to be precise 190 individuals.
7 0
3 years ago
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