3 years ago

What isthe differnce between cohesion and adhesion?

Biology

1 answer:

zhannawk [14.2K]3 years ago

6 0

Adhesion refers to the clinging of unlike molecules and cohesion refers to the clinging of like molecules.

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Which of the following is true for a cell that has a nucleus

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A is true because they do have a true nucleus or membrane-bound organelles .

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The domestic cat genome contains 2.9×109 base pairs. The length of linker DNA in mammals is 50 base pairs. Approximately how man

IgorLugansk [536]

Answer:

Number of nucleosomes in $2.9 * 10^9$ bp is equal to $1.47 * 10^7$

Explanation:

For wounding one nucleosome, total length of DNA required is equal to $146$ bp

The length of linker DNA in mammals is equal to $50$ bp

Thus , the total length of DNA that confides between two nucleosome is equal to the sum of wounding length of DNA and the linker length

$= 146 + 50\\= 196$ bp

Thus, in $196$ bp length of DNA, the total number of nucleosomes is equal to $1$

Thus, number of nucleosomes in $2.9 * 10^9$ bp is equal to

$\frac{2.9* 10^9}{196} \\1.47 * 10^7$

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What biological macromolecule is made up of monomers like the one shown below?

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Answer:

Nucleic acid

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Explain why humans need a circulatory system to transport oxygen, while single-celled organisms like the amoeba do not.

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