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Mama L [17]
3 years ago
12

Need help please?????

Biology
1 answer:
zhuklara [117]3 years ago
3 0

Answer:

Only 10% of the energy is transferred to the next level.

Explanation:

The pyramid base contains producers (make their food through inorganic substances like photosynthesis), they're called producers.. this is then passed through other organisms by consuming. Keep in mind 90 percent of the energy is lost as heat.

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The two structural divisions of the nervous system are the:
gavmur [86]

Answer: The nervous system as a whole is divided into two subdivisions: the central nervous system (CNS) and the peripheral nervous system (PNS).

Explanation:

3 0
3 years ago
¿que tipo de agente contaminante son los hongos?
gtnhenbr [62]

Answer:

Una amplia gama de microorganismos.

5 0
3 years ago
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
Give 2 reasons why cells divide
Katarina [22]
Cells divide for growth, to repair tissue damage, and because the nucleus can only control a certain size of cell.
4 0
4 years ago
If a carbohydrate has ,10 carbon, what other elements would be present?
iogann1982 [59]
Option A would be the appropriate one as we know the common formula of carbs is CH2O we can get C10H20O10 by that formule! :)
5 0
4 years ago
Read 2 more answers
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