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Gnesinka [82]
2 years ago
7

Identify the atom below. Answers: Ве С Н He

Biology
1 answer:
Brut [27]2 years ago
3 0

Answer:

He

Explanation:

helium has two positive protons and two negative neutrons

and two negative electrons

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She notices that the muscle cells are loaded with mitochondria while the macrophages have abundant lysosomes. why is this so?
Kaylis [27]

The muscle cells are loaded with mitochondria to allow large amounts of ATP production while the macrophages have abundant lysosomes to digest the debris and dead organisms like bacteria.

Mitochondria are known as the powerhouse of a cell. This is because most of the ATP production used by various systems in their operation is produced by mitochondria. A chemical called NADH is produced in the mitochondrial matrix through the Krebs cycle. The enzymes embedded in the mitochondrial membrane use this chemical to produce Adenosine Triphosphate, generally known as ATP.

Macrophages are phagocytic white blood cells involved in engulfing and killing pathogens. They are involved in the innate immune response of the body. Lysosomes have specialized enzymes that can kill these pathogens.

Muscle cells need to contract or expand for which they require energy. Thus, they have abundant mitochondria. Whereas, the macrophages have abundant lysosomes to help them kill disease-causing pathogens like a virus or bacteria.

To know more about ATP production in mitochondria, refer to the following link:

brainly.com/question/16876656

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3 0
1 year ago
What is the part of the syringe that goes down called?
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2 years ago
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marta [7]

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Explanation:

7 0
2 years ago
What happens when troponin and tropomyosin block the active sites of actin?
EleoNora [17]

Answer:

The correct answer is "It prevents spontaneous muscle's contraction".

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Muscle contraction is produce by the interaction of actin and myosin filaments. Basically, myosin binds to the active sites of actin, which produces a protein complex (known as actomyosin) that allows that the filaments slide past each other and generate a contraction. When troponin and tropomyosin block the active sites of actin prevents spontaneous muscle's contraction, because a nervous impulse is needed to remove the inhibitors and that myosin starts the contraction.

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