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sveta [45]
1 year ago
15

A scientist studied four pieces of fossil evidence that show the evolution of the modern-day man. These date back to 2 million y

ears, 1 million years, 0.5 million years, and 0.25 million years ago. Which fossil is the least similar to the modern-day man? (4 points) a 0.25 million years b 0.5 million years c 1 million years d 2 million years
Biology
1 answer:
torisob [31]1 year ago
3 0

Answer:

D 2 million years  is the answer

Explanation:

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The layer is the Mucosa layer.

Hope this helps!

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1 year ago
Caffeine is an inhibitor of phosphodiesterase. Therefore, the cells of a person who has recently consumed coffee would have incr
adell [148]

Answer:

B) cAMP

Explanation:

Phosphodiesterase is an enzyme that breaks a phosphodiester bond, for example in molecules such as cAMP and cGMP. So, phosphodiestarases are  are regulators of signal transduction: regulate the duration of signaling pathway.

Caffeine is  central-nervous-system stimulant and the mechanisms of its action usually are: mobilization of intracellular calcium or inhibition of specific phosphodiesterases.

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2 years ago
Some single-celled protists, such as paramecia, live in an extremely hypotonic environment and have contractile vacuoles that
brilliants [131]

The single celled protists which is one of the example of this is the paramecia survives and lives on extreme hypotonic environment. They have the ability of having to contract their vacuoles in which this contributes and help them to live and survive in a hypotonic environment.

7 0
1 year ago
The rate of O2 production by the light reactions varies with the intensity of light because light is required as the energy sour
kupik [55]

Answer:

The correct answer is option a.

Explanation:

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In the given case, the rate of oxygen production would get diminish as the rate of ATP and NADP+ generated by the Calvin cycle diminishes. Of all the outcomes of the Calvin cycle, ADP and NADP+ are the only ones that get utilized by light reactions.  

The ADP and NADP+ are used up by the light reactions to fuel their reactions. This illustrates that if the rate of ADP and NADP+ generated by the Calvin cycle diminishes the production of oxygen by the light reactions also diminishes.  

5 0
1 year ago
After water what are most abundant substances in body
Masja [62]
I'm pretty sure after water, the most abundant substances in the body are the 6 elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. (:

~PutarPotato
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2 years ago
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