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andriy [413]
3 years ago
12

17. The lungs and

Biology
1 answer:
Slav-nsk [51]3 years ago
8 0
I believe the answer is B. Heart
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Reviewing Meiosis:
Oksanka [162]

Start of Meiosis = 1 cell 1 pair of chromosomes

End of Meiosis 1 = 2 cells crossed over chromosome (combined genes 1 in each cell = 2)

End of Meiosis 2 = 4 cells, 1 chromatid in each (4)

I hope it helps!

6 0
2 years ago
Recall that Archaea and Bacteria used to be grouped in the same category. How were archaeons first distinguished from other prok
Alekssandra [29.7K]

Answer:

By difference in there ribosomal RNA sequence

Explanation:

Both bacteria and archaea lack membrane-bound nucleus and earlier both are considered in the same categories. Carl Woese was the scientist who discovered that bacteria and archaea are not similar.

Carl Woese and his lab members checked the ribosomal RNA in some archaeans and concluded that the archaeans are more closely related to eukaryotes than bacteria. After the study on archean Carl Woese classified the prokaryotes into two domains i.e., bacteria and archaea.  

Therefore by difference in the ribosomal RNA sequence archaeons first distinguished from other prokaryotes.

3 0
2 years ago
Shelby performed an investigation in which she monitored her heart rate while she ran on a treadmill. She used a heart rate moni
Diano4ka-milaya [45]

Answer:

Oxygen

Explanation:

6 0
3 years ago
Sister chromatids are attached to each other at an area called the
sp2606 [1]
They are joined together by a common centromere.
5 0
3 years ago
The two chemical families to which most antipsychotic drugs belong are ____.​
Hatshy [7]

Out of the following given choices;

a.phenothiazines and butyrophenones<span>
b. tricyclics and MAOIs
c. nitrates and glucocorticoids
d. benzodiazepines and antihistamines</span>

The answer is a. butyrophenones work by inhibiting dopamine-mediated neuro-transmitters hence altering the normal thought pattern of its patients. They are more anti-dopamine (and less anti-adrenergic, anti-histaminic and anti-cholinergic) than phenothiazine but work in the same pharmacological way.

5 0
3 years ago
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