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Serhud [2]
3 years ago
15

Why does it make sense for scientist to test just one variable at a time in an experiment?

Biology
1 answer:
Fed [463]3 years ago
5 0
If you test more than one variable in an experiment at a time than you wouldn't know what variable caused the change in the end.
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What additional information would assist you in determining whether polar bears and grizzlies are different species, based on th
ladessa [460]

Answer:

The correct answer is- e. I and II only

Explanation:

According to the biological species concept, a species is the population of organism in which the individual are able to interbreed with each other and also able to produce viable and fertile offspring.

Therefore here to determine whether polar bears and grizzlies are different species we have to get information that whether the F1 generation of grizzlies and polar bears is viable and able to produce their own offspring that means are F1 generation fertile. So the correct answer is e. I and II only.

5 0
3 years ago
Play‘s the steps for the formation of enzyme pepsin the pepisnogen in the correct order
musickatia [10]

Answer:

The DNA strands unwind, and RNA polymerase binds to the template strand.

The synthesis of mRNA begins.

The mRNA undergoes intron splicing and exits the nucleus.

The tRNA moves through mRNA with the activated amino acids. attached to it.

The amino acids assemble.

Explanation:

there

3 0
3 years ago
Please help me with this question. ty! <333
Anni [7]

Answer:

A. Activated B - cells divide to form memory cells.

Explanation:

The vaccine contains the dead version of the respective virus, so that virus will be inactive and it will become easy for the WBC to kill it and antibodies will be formed.

This is done because if we get infected by the virus, our body cells (WBC) will remember that how they killed the first entered virus (the dead version) and it will be easy for them to kill the active virus as they know the antibodies which were formed to kill the inactive virus.

HOPE IT HELPS YOU

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5 0
2 years ago
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An electric generator transforms mechanical energy into electrical energy
lyudmila [28]

A generator converts mechanical energy into electrical energy, while a motor does the opposite - it converts electrical energy into mechanical energy. Both devices work because of electromagnetic induction, which is when a voltage is induced by a changing magnetic field.Nov 6, 2014

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3 years ago
Which of the following is not a step involved in critical thinking
Mama L [17]
Non-critical thinking appears to be more benifentail to the individual in education. 
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