3 years ago

Why is a flower classified as a plant?

1 answer:

fomenos3 years ago

8 0

Plants are classified as a “kingdom” united by a common characteristics such as, the presence of chloroplasts which enables them to perform photosynthesis, and cell walls made of cellulose.

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When pure black hamsters were mated with pure white hamsters, all of the offspring were black. The trait for whiteness would bes

Angelina_Jolie [31]

Answer:

Recessive

Explanation:

All of the offsrping were black so that means black was the dominant gene and white was the recessive

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_____ proposes that the shortest number of steps or character state changes is most likely correct.

maxonik [38]

I think the awnser is D hope that helps

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Some people have low levels of calcium circulating in the blood, a condition known as hypocalcemia. while for many this disorder

kap26 [50]

Answer:

low level of calcium would result in fewer signals sent between pre and post synaptic cells.

Explanation:

The calcium has a main role in signal transmission mechanism and here is the mechanism :

1-the impulse reaches the synapse (depolarization which is a voltage change).

2-the voltage gated calcium channels open and let calcium flow into the cell.

3-the calcium causes the synaptic vesicles to rupture and release chemical transmitters which cross the synaptic cleft and finally bind to receptors on the post synaptic cell (transmitting the signal)

so it's obvious that if calcium concentration decreases, the signal transmission also decreases.