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Advocard [28]
2 years ago
9

Please help !!!!!!!!!

Biology
2 answers:
algol132 years ago
3 0
The biosphere. This is the layer that contains all life on the planet.
CaHeK987 [17]2 years ago
3 0

Answer:The melting of polar ice caps is an example of the interaction between the atmosphere and cryosphere.

Explination:

Atmosphere is a layer of gases surrounding the earth, while cryosphere are all parts of the Earth where water is in solid form, including sea ice, lake ice, river ice, snow cover, glaciers, ice caps, ice sheets, and frozen ground.

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1What does the term "metabolism" mean? to maintain internal balance
deff fn [24]

Answer:

to maintain internal balance

Explanation:

5 0
3 years ago
Which of the following statements is true?
Amanda [17]

Answer:

Explanation:

all of above

8 0
2 years ago
If you were an Astronaut in the middle of the near side of the moon during a full moon, how would the ground around you look? Ho
zubka84 [21]
  However, It would be bright all around. All though the Apollo astronauts that went there, it wasn't as bright as say a desert on Earth but more like an asphalt parking lot.
6 0
2 years ago
Which factor does not greatly influence the rate of
jonny [76]

Answer:

a. transcription

Explanation:

<em>Sugar transport in phloem is referred to as pressure flow and it involves the movement of sugar through the phloem vascular tissue from the regions where sugar is synthesized (by photosynthesis) to other parts of the plant's body that require sugar.</em>

The parts of plants where sugar is synthesized (usually the leaf) is known as sugar source while the parts where they are transported is referred to as the source. Sources are usually areas of of high osmotic concentration and high water pressure while sinks are usually areas of low osmotic concentration and low water pressure.

<em>Hence, sugar transport in the phloem can be said to be influenced by the rate of sugar production at the source (rate of photosynthesis), turgor pressure as well as sugar concentration in sinks and sources.</em>

The only option that has no known effect on sugar transport in the phloem is transcription.

The correct option is a.

7 0
3 years ago
Refer to the Biochemistry in Focus section of your text for this chapter to answer this question. Sarin inhibits acetylcholinest
DENIUS [597]

Answer:

c. Pyridostigmine binds to the acetylcholinesterase active site and prevents sarin from binding to and modifying the enzyme active site.

Explanation:

Sarin is a toxic compound which inhibits acetylcholinesterase enzyme. This enzyme degrades the neurotransmitter acetylcholine after the required muscle cell stimulation. In absence of its activity, acetylcholine is not degraded and the muscle cells are stimulated uncontrollably. The muscles are not able to relax which ultimately proves fatal for the victim.

Pyridostigmine is also an acetylcholinesterase inhibitor like Sarin. However its period of inhibition is short compared to organophosphorus inhibitors like sarin. It competes with sarin and replaces it in the active site of acetylcholinesterase. The enzyme is still inhibited but for a shorter time as compared to inhibition by Sarin. Hence after sometime, it becomes functional again and resumes its normal activity. Acetycholine starts getting degraded relaxing the muscles.

8 0
2 years ago
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