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k0ka [10]
3 years ago
12

The cell membrane is semipermeable, what does this mean? *

Biology
2 answers:
ladessa [460]3 years ago
7 0

Answer:

i think it could

Explanation:

maxonik [38]3 years ago
6 0

Answer:

Explanation:

A layer (barrier) that only certain molecules can pass through, that also blocks the other molecules' passage.

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A grassland is experiencing a severe drought. The lack of rain is causing the grass to die and the ponds and creeks to dry up.
dusya [7]

The population of fish will decrease.

The population of grazing animals will decrease.

<h3>What is drought?</h3>

A drought is a prolonged period without enough precipitation/water to support people, animals or crops.

With less water, fish and other creatures have fewer places to dwell, swim, and evade predators. In the near run, shrinking streams and lakes necessarily result in fewer fish. Drought conditions can cause water temperatures to rise, affecting cold-water species such as native trout.

The population of grazing animals would decrease as the grass is a food source and without their food source, there would be no source of staying meaning that they would result to finding new food sources through migration likely.

7 0
2 years ago
When are the chromosomes of a cell duplicated?
Sonbull [250]
Its b during how ever you say that word if not that then c not all the way sure tho
6 0
3 years ago
I'LL GIVE BRAINLIEST:
ch4aika [34]

Answer:

The grasshopper doesn't have to use it circulatory system to carry gases to and from the grasshopper cells because the air that is passed through the trachea system is already close enough to get to the cells.

Explanation:

"In the grasshopper, exchange of oxygen and carbon dioxide occurs in the tracheal system. Hemolymph plays no part in the process. There is not even an oxygen-carrying pigment in insect hemolymph." - www.biology-pages.info

(Here's some extra info as well)

8 0
3 years ago
Read 2 more answers
In a 2 allele system, if the allele frequency for "t " is 0.84 , what is the allele frequency for " T " ?
algol13

Answer:

0.16

Explanation:

0.16 = 1-0.84

they are complementary

3 0
3 years ago
Neurotransmitters are released from axon terminals via
love history [14]

Answer:

Neurotransmitters are released from axon terminals via exocytosis

Explanation:

Dendrite is the receiving part of the presynaptic neuron, while axon is the transmitting part of the neuron. So, after initiation, action potentials travel down axons to the terminals. Action potential travels through the membrane of the presynaptic cell causing the voltage-gated channels permeable to calcium ions to open. Ca2+ flow through the presynaptic membrane and increase the Ca concentration in the cell which will activate proteins attached to vesicles that contain a neurotransmitter (e.g. acetylcholine). Vesicles fuse with the membrane of the presynaptic cell, thereby release their contents into the synaptic cleft-space between the membranes of the pre- and postsynaptic cells (exocytosis of the vesicle's content). Neurotransmitter ACh (from the vesicles) binds to its receptors on the postsynaptic membrane and its binding causes depolarization of the target cell (muscle cell). Depolarization occurs because sodium enters the cell as a result of neurotransmitter receptor binding.

6 0
4 years ago
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