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Karo-lina-s [1.5K]
3 years ago
9

Select all that apply: Which of the following affect(s) the half-life of a radioactive substance?

Biology
1 answer:
frutty [35]3 years ago
8 0

Answer:

The correct answer is option A, the type of isotope

Explanation:

The half life of a radioactive substance is a constant value and thus it is not affected by the temperature, catalyst or mass of the substance.  Basically it is the time taken by a radioactive substance to reduce its mass by half of its actual value. Radioactive decay takes place only when the atomic nucleus becomes unstable and thus the isotope type is the only factor which affects the radioactive decay of any element.  

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During ______________, two bacteria of the same species attach to each other and combine their genetic material.a. reproduction
Nina [5.8K]

Answer:

D

Explanation:

Conjugation

3 0
4 years ago
A scientist crosses a rabbit with short fur and a rabbit with long fur. which of these outcomes would show that the trait for fu
maks197457 [2]

Answer:

d. all of the offspring have medium length fur.

Explanation:

Incomplete dominance is a phenomenon in which offspring produce a trait that is intermediate between the two forms of a certain trait.

For example: In four o clock plant, some plants produce red flowers while some plants produce white flowers. When plants with red flowers are crossed with plants with white flowers, all the offspring have pink flowers.

Why is that so?

This is because no allele is completely dominant over the other and therefore both contribute their individual effect by producing intermediate phenotype.

Example in question:

Cross between a rabbit with short fur (SS) and a rabbit with long fur (LL)

P1:                                SS        x        LL

Gametes:                     S     and  L

Offspring                        SL :SL

SL: Medium length fur

Therefore this is a case of incomplete dominance.

Hope it help!

7 0
3 years ago
I need help on this bio quiz
frutty [35]

Answer:

it should be the nucleus

6 0
3 years ago
For gas exchange to be efficient, the respiratory membrane must be ________.
Angelina_Jolie [31]
<span>The correct answer is b.0.5 to 1 micrometre thick.</span>
Usually, the respiratory membrane is about 0.6 micrometres thick. This membrane consists of the alveolar epithelial cells, the capillary endothelial cell, and basement membranes which are formed by the alveolar and capillary cells.
5 0
3 years ago
Which of the following is a subatomic particle located inside the nucleus of an atom
Dmitry [639]
Hello. 

The subatomic particles located inside of the nucleus of an atom consist of protons and neutrons.
8 0
3 years ago
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