3 years ago

what cell structure is largely responsible for controlling the entry and exit of substances into or out of the cell?

Biology

1 answer:

ehidna [41]3 years ago

7 0

Answer:

plasma membrane

Explanation:

The plasma membrane is also known as the cell membrane. It is the boundary between the internal components of a cell and its external surroundings. It controls the entry and exit of substances into or out of the cell and thus, facilitates the exchange of substances between the cells and their external environment.

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What is the expected phenotypic ratio for feather colour if two chickens with blue feathers are crossed

ss7ja [257]

Answer:

The correct answer is - 1:2:1 for black : blue : white chicken.

Explanation:

We know that color of the feather is a trait of the chicken that shows the codominance type of inheritance pattern where both forms of the trait are dominant and make a mix of the forms. In this case, blue is heterozygous BW and black BB and white is WW, then crossed between BW with BW

gametes: B, W and B, W

Punnett

B W

B BB BW

W BW WW

thus, the phenotypic ration is - 1 black : 2 blue : 1 white

7 0

3 years ago

Why is it important that solid water, ice, floats rather than sinks?

rodikova [14]

Answer:

it floats