2 years ago

All life on earth is made of which element?

Biology

1 answer:

ddd [48]2 years ago

3 0

Answer: Hydrogen

Explanation:

Because it is the element that everything is created with it is everywhere. All life has hydrogen in it, our air, SPACE, everything.

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Name two major divisions of the nervous system

mr_godi [17]

Answer: Central and Peripheral.

Explanation: The nervous system has two major divisions: central and peripheral. The central nervous system contains the brain and the spinal cord. The peripheral nervous system contains the nerves, which leave the brain and the spinal cord and travel to certain areas of the body.

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3 years ago

True or false? The Indian Ocean is the biggest ocean on Earth.

kow [346]

False. The Pacific Ocean is the largest.

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The first line of defense involves which structure(s)?

kifflom [539]

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Now consider a single base mutation in a codon for leucine that creates a codon for phenylalanine. A true reversion changes the

madam [21]

Answer:

options A, B, D and E

Explanation:

leucine codons include: UUA, UUG, CUU, CUC, CUA, CUG

phenylalanine codons include: UUU, UUC.

CUU

replace C with U to give

UUU phenylalanine codon

replace underlined with A

UUA leucine codon

CUC

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UUC phenylalanine codon

replace underlined with A or G

UUA, UUG leucine codons

UUG

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UUU phenylalanine codons

replace underlined with C

CUU leucine codon

UUA

replace underlined with U or C

UUU or UUC phenylalanine codons

replace U with C

CUU or CUC leucine codons

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2 years ago

When the M phase begins during the cell cycle, it starts with

polet [3.4K]

Answer:

prophase

Explanation:

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