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sergij07 [2.7K]
3 years ago
12

Which of the following is the smaller amount?

Biology
1 answer:
viva [34]3 years ago
8 0

Answer:

A) the concentration of calcium ions in the sarcoplasm of a resting muscle

Explanation:

Sarcoplasmic reticulum is a system of the membranous sac that is present around each myofibril and is filled with calcium ions. When muscles are in the resting stage, calcium ions are stored in the sarcoplasmic reticulum.

As the muscle action potential triggers change in voltage-gated calcium ion channels of the sarcoplasmic reticulum, the channels are opened to release the calcium ions in the sarcoplasm. Increased calcium ion levels in sarcoplasm make the muscle fibers to contract.

Removal of acetylcholine from the synaptic cleft ends the production of muscle action potential and calcium ions are moved back from the sarcoplasmic reticulum.

Hence, lower levels of calcium ions are maintained in sarcoplasm when the muscles are in the resting stage.  

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5. What is something that is common between a bat, human, and dolphin?
IrinaVladis [17]

Answer:

Mammals

Explanation:

Something that is common between a bat, human, and dolphin is that they are mammals. This is because they have fur and warm blooded, they didn't need to hatch instead they were born alive.

7 0
3 years ago
Hydrophilic means ____ love of water fear of water a water pressure mechanical system related to dams
kow [346]

Answer:

love of water

Explanation:

HYDROPHILIC is a term used for substances that are WATER-LOVING in nature. As the name implies, hydro-meaning water and philia- meaning love, it means the love of water. Substances that are hydrophilic tend to be attracted towards water molecules and are readily dissolved by it. For example, sugar molecules are hydrophilic, hence, attract and dissolve in water.

On the other hand, hydrophobic means water-fearing i.e substances under this category repel water. Examples are some fat molecules.

5 0
3 years ago
When a cat drops from a tree to the ground, the conversion of takes place. Then cat runs up behind a mouse to obtain its food. A
slava [35]

When a cat drops from a tree to the ground, the cat is transforming chemical energy attained from the food into kinetic energy. The later energy is used by the living species when they are performing locomotion.  

When a cat feeds on a mouse, the mouse will undergo through the process of digestion resulting in the formation of chemical energy. Thus, the food consumed by the cat will get transformed into chemical energy that can be utilized by the cat to perform its usual activities.  


4 0
3 years ago
Read 2 more answers
A force is a push or pull that is described by its
k0ka [10]

I would think that it is B or C

7 0
2 years ago
Is dna replication describe as conservative or semi-conservative why
Lina20 [59]

Answer:

DNA replication is described as semi-conservative.

Explanation:

DNA replication is described as semi-conservative because each double helix formed comprises one strand from the helix from which it was copied and a new strand. That is, the replication of one helix results into two new copies of which each contains one of the original double stranded helix from which it was synthesized.

8 0
3 years ago
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