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Artemon [7]
3 years ago
10

Which of the following processes takes place during prophase?

Biology
1 answer:
kaheart [24]3 years ago
7 0

Answer:

A) Mitotic spindles form

Explanation:

The mitotic spindle begins to develop during prophase. As the cell's two centrosomes move toward opposite poles, microtubules gradually assemble between them,

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Describe the process of skeletal muscle contraction by assembling the following 10 events in the proper order in paragraph form.
balu736 [363]

5) muscle fiber is stimulated at the neuromuscular junction triggering an action potential  

7) APs travel down the T-tubules to the sarcoplasmic reticulum  

Released acetylcholine (due to action potential within motor neuron) from the motor neuron initiates depolarisation within the sarcolemma, which is spread through the muscle fibre via T tubules.

8) in response to an AP, calcium ions are released into the cytosol/space around the myofibrils

Depolarisation causes the sarcoplasmic reticulum to release calcium ions necessary for the contraction

3) calcium ions bind to the T and T system

1) T and T system undergoes a conformational change, exposing the myosin binding sites on actin  

6) myosin head/cross-bridges bind to actin

The binding sites for the myosin heads located on actin, are covered by a blocking complex (troponin and tropomyosin) that can be unblocked by the calcium binding

2) myosin heads/cross bridges bind to actin and flex, shortening the sacromere  

4) actin filaments are pulled toward the center of the sacromere, shortening the muscle fiber  

As the individual sarcomeres become shorten the muscle fibres as a whole contracts

10) myosin head continues to attach, flex, release, extend, and reattach as long as calcium ions are present

9) calcium ions actively transported into the sarcoplasmic reticulum  

Relaxation of a muscle fiber occurs when a Ca ions are pumped back into the sarcoplasmic reticulum .

3 0
3 years ago
The energy associated with an object's position is termed
Flauer [41]
The answer to this is mechanic energy. 
6 0
3 years ago
You could distinguish a granum from an inner mitochondrial membrane because the granum, but not the inner mitochondrial membrane
goblinko [34]

Answer:

Answer ...... would have photosynthetic pigments.

Explanation:

In a short explanation, the collective term for the stack of thylakoids within the chloroplast of a plant cells is known as GRANUM.

Note that , chloroplasts are made up of the chlorophyll, which are the green pigments responsible for photosynthesis.

3 0
3 years ago
HELP WILL MARK YOU BRAINLIEST use your own words!!!
Umnica [9.8K]

Answer:

Dependant Chickens Eating,

Independant: Days

Day 3, 5.5 . Day 6, 14

Chickens Eating over Time

Line graph because it displays a single point of info over time.

Explanation:

7 0
3 years ago
In the product of mitosis, a human body cell has how many chromosomes?
Orlov [11]

Answer:

46

Explanation:

Mitosis cell divide and give us 46 chromosome in each two daughter cells.

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