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Mamont248 [21]
3 years ago
6

What does the atomic number equal?

Biology
2 answers:
telo118 [61]3 years ago
7 0

Answer:

number of protons in the nucleus

Dvinal [7]3 years ago
4 0

Answer:

The number of protons in the nucleus

Explanation:

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During light-dependent reactions,____
slamgirl [31]

Answer:

Explanation:

chemical energy

The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules. The light-dependent reactions begin in a grouping of pigment molecules and proteins called a photosystem.

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2 years ago
Part of the plant where photosynthesis generally occurs
icang [17]

Answer: Leaves

Explanation:

Photosynthesis takes place in things called chloroplasts. Chloroplasts contain a green substance called chlorophyll. Most of these can be found in the leaves of the plant.

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3 years ago
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Which of the following is a fat which thickens when reduced?
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Pectin

Explanation:

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3 years ago
Refer to the paragraph about the formation of the isthmus of panama. the sister populations on opposite sides of the isthmus are
Dimas [21]
The answer is reproductive isolation. Reproductive isolation ensures members of different species do not produce offspring. In this case, geographical separation is ensuring that individuals from the two different populations are not able to mate with each other. Eventually, through different selective pressures, the two populations will diverge sufficiently in genotype to become distinctly different.
6 0
2 years ago
Power stroke (myosin head bends) coupled with the release of ADP and phosphate, ATP hydrolyzed to ADP and Phosphate and the Myos
svetlana [45]

Answer:

Power stroke (myosin head bends) coupled with the release of ADP and phosphate

Explanation:

Muscle contraction results from myosin heads adhering to actin and attracting it inwards. It uses ATP. Myosin adhers to actin at a binding site of its globular actin protein and adheres at another binding site for ATP (hydrolyzed ATP to ADP, Pi  and energy)

ATP binding prompts myosin to detach from actin, ATP is changed to ADP and inorganic phosphate, Pi by ATPase. The energy formed at this process orientates myosin head to a “cocked” direction.

The myosin head goes in the direction of the M line, holding the actin with it in the process causing the filaments to orientate nearly 10 nm in the direction of the M line--- power stroke (force is produced), the sarcomere reduces in length and the muscle contracts.

Note: The power stroke is seen when ADP and phosphate disattaches itself from the myosin head.

At the terminal point of the power stroke, the myosin head as low-energy, followed by ADP release.

The attached image shows the cross-bridge muscle contraction cycle, which is activated  by Ca2+ sticking to the actin active site. And how actin moves in relation to myosin.

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3 years ago
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