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DiKsa [7]
3 years ago
13

Why do lipids make effective cell membranes in living cells?

Biology
2 answers:
Vikki [24]3 years ago
8 0
Lipids form barriers so undesirable molecules cannot pass through the membrane. Plato Users:B
ElenaW [278]3 years ago
7 0
Lipids form the bilayer of cell membrane which act as a partially permeable mmbrane of cell to control the substances moving in and out of the cell.
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How was homo floresiensis different in appearance from homo sapiens?
Dmitriy789 [7]
<span>H. floresiensis tended to be smaller than H. sapiens. In addition, they had much smaller heads and, therefore, smaller brains. Also, the species had a much more sloped forehead, shoulders that were more forward-leaning, and feet that were relatively large for their small body size.</span>
5 0
3 years ago
A pea plant with round seeds has the genotype rr. if you cross this plant with a wrinkled-seed plant, genotype rr, what is the p
Lapatulllka [165]
I think you wrote this wrong? Is it not round rr vs wrinkled RR?? I'll answer it with that assumption:

You are crossing a rr with an RR:
You only get Rr back so they will phenotypically be all wrinkled

If you are crossing rr with an Rr (so a heterozygote wrinkled):
50% will be Rr (wrinkled)
50% will be rr (round)
See my picture for the Punnett Squares for both answers!

3 0
2 years ago
Why are the<br> differences so large near the poles?
RoseWind [281]

Answer:

Sunlight hits a smaller surface area at the Equator so heats up quickly compared to the poles. Explanation:

4 0
2 years ago
Peripheral resistance ________. select one:
velikii [3]
I believe it's B. Apologies if I'm wrong.
8 0
3 years ago
The respiratory rate times the tidal volume corrected for the dead air space in the lungs is the __________.
pav-90 [236]

Answer:

d. alveolar ventilation rate

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Alveolar Ventilation rate (AVR) refers to the rate of airflow that reaches the alveoli which is available for gas exchange with the blood in a given unit of time. AVR is generally calculated as the amount in millimeters of air expired that equilibrates (i.e., exchanges) with alveolar gas per min unit (ml/min). AVR is affected by breathing frequency, tidal volume ( i.e., the normal amount of air between inhalation and exhalation), and the amount of dead space in the lungs.

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