Rigor mortis that occurs in skeletal muscles a few hours after death is due to

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Answer 1

Answer: Rigor mortis that occurs in skeletal muscles after the death is caused by decreased ATP and increased permeability to calcium in the bones

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Which organelle can be compared to a security guard who decides whom may enter a building and whom may not?

Answers

The answer is the cell membrane. The cell membrane controls what nutrients come in, and what unneeded material comes out. It protects the cell from anything that might come in and harm it. It is kind of like the security guard. A security guard let's the good people in and keeps the bad people out.

Final answer:

The cell membrane is comparable to a security guard. It regulates the substances that enter and exit cells, allowing necessary substances in and keeping harmful ones out.

Explanation:

The organelle that can be compared to a security guard who determines who is allowed to enter and exit a building is the cell membrane. The cell membrane, also known as the plasma membrane, is a biological structure that separates the interior of cells from the outside environment. It functions similarly to a security gatekeeper, regulating the transport of substances in and out of cells. For example, it allows useful substances such as glucose and amino acids to enter the cell while preventing harmful substances from entering. In this way, the cell membrane ensures the safety and functionality of the cell, acting as its security guard.

Learn more about Cell Membrane here:

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There are two checkpoints during the cell cycle that regulate cell division. They are right before the _____ phase and _____ phase. S; M G1; G2 S; G1 M; G2

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Two checkpoints during the cell cycle that regulate cell division are right before S phase and M phase.

Cell cycle checkpoints are control mechanisms necessary for proper cell division. In the cell cycle, there are two checkpoints: the G1 checkpoint and the G2 checkpoint. The G1 checkpoint is right before the S phase, and G2 checkpoint is right before the M phase.
If something is wrong at the G1 checkpoint, the cell will not enter the cell cycle. It is important to be delayed before cell enters S phase where DNA replication commences.
The G2 checkpoint is a DNA damage checkpoint and if DNA is damaged, entering the cell cycle is delayed before mitosis (M phase).

Answer:Sphase and Mphase

Explanation:

Why are phytoplankton essential to aquatic life zones? filter pollution from water provide basis of food chains moderate water temperature produce chemicals that can be used against predators

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The answer is provide basis of food chains.

Plankton includes a diverse group of organisms that live in the water, but are not capable of active swimming against the current. They are usually present in the upper part of the ocean, where is enough sunlight.
They are the basis of food chains in water ecosystems. They provide food for different animals, such as jellyfish, shrimps, whales, etc.

Answer:

They provide basis of food chains.

Explanation:

Phytoplankton are the autotrophic components of the plankton community and a key part of oceans, seas and freshwater basin ecosystems. The name comes from the Greek words φυτόν, meaning "plant", and πλαγκτός, meaning "wanderer" or "drifter".

Answer options are:A- DECOMPOSITION
B- HUMAN EMISSIONS
C- PLANT RESPIRATION
D- PHOTOSYNTHESIS

Answers

B- Human Emissions is the correct answer

Hair would be dry and brittle without the presence of? A) sebaceous glands B) keratin C) melanin D) fat

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Answer:

A) sebaceous glands

Explanation:

Sebaceous glands are responsible for producing and secreting sebum, a substance that can lubricate and waterproof the skin and hair, giving them a brighter appearance.

However, a highproduction of sebum through these glands can cause exaggerated greasiness in the hair as well as acne on the skin.

Meanwhile, low sebum production can leave the skin dull and dehydrated, causing premature aging, and leaving hair dry and brittle due to lack of lubrication.

Actually keratin is not correct

The correct answer to your question is

Sebaceous Glands.

A star is not considered born until the process of

Answers

Fusion is the right answer

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Biology is a very cut-and-dried science. a. True b. False

The percentage of crossing-over between 4 linked genes (K, L, M, N) are below. Put them in the correct sequence.Between M and N: 8% Between K and N: 5% Between K and L: 16 % Between N and L: 11% Between M and L: 19%