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wariber [46]
3 years ago
15

How do you tell if physicalchange has occurred?

Biology
1 answer:
QveST [7]3 years ago
4 0
No new substance is produced.
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Embryological studies suggest that the most ancient chordates were related to the ancestors of:
Elodia [21]
The answer is Echinoderms.

According to the Embryological studies, the most ancient chordates were closely related to the ancestors of the echinoderms. Echinoderms are members of the group Phylum Echinodermata of marine animals. Some known echinoderms are starfish, and sea cucumbers.
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3 years ago
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A mutation would have an effect on <br><br> molecules.
Dovator [93]

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A mutation that cause changes to short stretches of nucleotides. These mutations affect the specific genes that provide instructions for various functional molecules, including protein . changes in these molecules can have impact on any number of an organism's physical characteristics

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2 years ago
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Which characteristic of viruses prevents them from being used as evidence to support cell theory?
Ne4ueva [31]

Answer:

Viruses replicate only inside host cells.

Explanation:

<u>Viruses are not used as evidence to support the cell theory because they are not considered a cell and cannot carry out vital life processes without getting into host cells. </u>

According to the cell theory, the cell is the basic unit of life, all living organisms are made up of cells and cells arose from preexisting cells. A virus that is not in a host cell is just a piece of DNA/RNA surrounded by a protein coat and is not capable of carrying out any life process for it to be considered living.

<em>Viruses are only able to reproduce and multiply when they get access to a living host. They use the genetic mechanisms of the host to replicate their DNA/RNA using the lytic or lysogenic cycle. Hence, they are not used to support the cell theory. </em>

3 0
2 years ago
How does natural selection impact a population
statuscvo [17]

Answer:

People who acquire advantageous features have a greater chance of surviving, whereas individuals who have less useful traits are weeded out by natural selection. The higher the diversity of characteristics in a population, the greater the population's chances of survival.

7 0
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How are genes and nitrogen bases related?
bezimeni [28]

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each gene has a corresponding number of bases

Explanation:

each base corresponds to another on like this a to t and c to g

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3 years ago
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