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DochEvi [55]
2 years ago
9

A list of some aspects of cell theory is below. 1. All living cells must have a cell wall. 2. All living cells require oxygen fo

r survival. 3. The basic unit of life is a cell. Which of the aspects above are included in cell theory? A) 1 only B) 1 and 3 Eliminate C) 2 and 3 D) 3 only
Biology
1 answer:
NeX [460]2 years ago
6 0
D. 3 only is the answer
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What is an endemic species?
natima [27]

Endemism

Endemism is the state of a species being native to a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere.

Explanation:

Endemic species are those that are found in just one region and nowhere else in the world. For example, kangaroos are originally endemic to Australia and are found nowhere else in the world. ... The Tasmanian Tiger is one such animal that was endemic to Australia, Tasmania and New Guinea. But now, it is extinct.

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3 years ago
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3 years ago
Define mutation and mutagen.
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Mutations. Definition. A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed.
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3 years ago
Which statement is true about nuclear decay
Readme [11.4K]

Answer:

Nuclear decay rates are constant

Explanation:

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Therefore, the half-life of radionuclides (specific for each radionuclide) is defined as the time period in which half of the initial number of radioactive nuclei decays.

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5 0
3 years ago
What type of functions to proteins have for us
nydimaria [60]

Answer:

Proteins play a role in transport, enable movement, provide structure and support, and help make chemical reactions happen.

Explanation:

I'm not quite sure if this was your question, but these are the functions of protiens.

4 0
4 years ago
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