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amm1812
3 years ago
13

Can some one please help me with these problems? Please I need answers FAST ;-;

Biology
1 answer:
Elden [556K]3 years ago
4 0
A. B. D. C. i believe are the answers
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What balances are affected by the local force of gravity
Sav [38]

Spring balance is affected spring balance is a type of scale which measures the weight of the body by combining the force of an object extending the spring on the balance with the pulling force of gravity exerted on the body

7 0
4 years ago
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1. Which diagram best represents mitosis cell<br> division?
marusya05 [52]

Answer:

c

Explanation:

3 0
3 years ago
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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
A piece of granite rock have a density of 2.57g/cm^3 and a mass of 0.304 kg. What is the volume ?
givi [52]

Answer:

1.183×10∧-4 m³

Explanation:

ρ=m/V

Here, m=0.304kg

ρ=2.57g/cm^3 =2570kg/m^3 [1g/cm^3=1000kg/m^3]

V=1.183×10∧-4 m³

Hope, this helps you.

7 0
3 years ago
Many tropical zooplankton have elaborate spines. These have been interpreted as either a defense against predation or a means to
anastassius [24]

Answer:

Means to increase drag and prevent sinking is the correct answer.

Explanation:

Plankton avoid sinking by increasing their surface area and decreasing their density. Spines slow down sinking by adding surface area without increasing density. Defense against predation would be to sing below. Not the opposite.

3 0
3 years ago
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