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Alex777 [14]
3 years ago
6

1.) What organism is essential for the nitrogen cycle to continue?

Biology
1 answer:
yaroslaw [1]3 years ago
8 0

im not even sure tbh these are really hard im so sorry

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Clinical manifestations of hypocalcemia include which of the following? (Select all that apply.) Positive Trousseau sign Positiv
kumpel [21]

Answer:

Positive Trousseau sign

Positive Chvostek sign

Hyperactive reflexes.

Muscle twitching, Paresthesias

When the blood conce

Explanation:

When the blood ca+ concentration falls below  the standard of 4.4-4.5mg/dL,that is below 4.4mg/dL the clinical condition is called hypocalcemia. It is caused by hypothyroidism,due to  malfunction of the parathyroid gland.

Generally, Ca+ is needed for contraction of muscles by causing the fusion of the vesicles containing neurotransmitters to the presynaptic membrane for the passage of neuro transmitters  to fuse with the receptors on the sarcolemma to initiate  muscular contractions by opening of ligand gated Na+. It also interact with the ligand gated  sodium ion channels

Generally,Ca+ inhibits depolarization of ligand gated Na+ channels. Thus blocks the opening of these channels and therefore the rate of excitability.Therefore, If the is low serum levels of Ca+,There is increased in the threshold of depolarization because more ligand gated Na+ channels are opened,Thus their is increased excitability of nerves and muscles fibres therefore in the  clinical manifestations listed above.

It can be treated with infusion of Ca+ into the blood.

7 0
3 years ago
In aerobic respiration, what is the direct source of energy that ATP synthase uses to synthesize ATP?
dexar [7]
A. electron gradient
6 0
3 years ago
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this food web describes feeding relationships in a tropical community. if an invasive species of large snake enters this communi
luda_lava [24]

Answer:

Invasion of the large snakes will cause disruptions in this tropical community by increasing competition in tropic level organisms for their food that is primary and secondary consumers.

Explanation:

Invasive species generally and most often harm the native community and may lead to the extinction of native plants and animals from the community. These invasive species increase competition that results in limiting resources and decreasing diversity.

Large snakes will compete with the higher tropic level organism that depends on the primary and secondary level organism that lead to a decrease or extinction of these organisms. This food web will be completely reduced and disrupted, vegetation will increase.

3 0
3 years ago
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_____ is an unpleasant side effect that alcohol withdrawal creates for an alcoholic. excessive sleepiness leptokurtic reaction c
bezimeni [28]
The correct answer is "delirium tremens"
<span>
In the event of abrupt cessation of alcohol use, there will be an adaptive response of the central nervous system leading to overactivity which explains the withdrawal symptoms. In the event of central nervous system hyperactivity, mild symptoms include but not limited to insomnia, tremors, mild anxiety, headache, and diaphoresis; these symptoms appear usually within six hours of cessation. Withdrawal-related seizures characterized as generalized tonic-clonic convulsions as well as alcoholic hallucinosis or hallucinations related to abrupt alcohol cessation may occur in moderately severe cases. In most severe cases, delirium tremens may occur and this is characterized by hallucinations, disorientation, tachycardia, and agitation. </span>
3 0
3 years ago
Which statement best compares pioneer species with climax communities?
Flauer [41]

Answer:

B

Explanation:

5 0
3 years ago
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