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iren [92.7K]
3 years ago
14

To respond to a chemical signal, a cell must have a ? to which the signaling molecule can bind.

Biology
1 answer:
Sphinxa [80]3 years ago
4 0
A cell must have an atom
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The sharing of electrons between atoms is a(n)
kolezko [41]

Answer:

A covalent bond.

Explanation:

A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.

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What is an active site?
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B is correct.

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8 0
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You cross two true-breeding parents (one with yellow seeds and one with green seeds), grow and self-pollinate the F1 generation,
Andru [333]

Answer:

1500

Explanation:

Let's assume that the allele for yellow seed color is "Y" and the allele for green seed color is "y". Genotype of pure breeding yellow seeded plant would be "YY" and that of the green seeded plant would be "yy". A cross between YY and yy gives all heterozygous yellow seeded plants (Yy) in F1 progeny. Self pollination of two F1 plants (Yy x Yy) obtains F2 generation in 3 yellow: 1 green ratio.

The total population size of F2 generation = 2000

The proportion of yellow seeded plants in F2 generation = 3/4 (since the F2 phenotype ratio is given 3 yellow: 1 green)

Therefore, total number of yellow seeded plants in F2 progeny = 3/4 x 2000= 1500

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3 years ago
Reasons why humans aren't herbivores and are omnivores.
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Because humans eat both plants and meat
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Which of the following is a true statement about fertilizers?
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on my view its first one

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