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3 years ago

2 Points How are meiosis and mitosis different?

Biology

1 answer:

lakkis [162]3 years ago

8 0

Answer:

Meiosis is essentially the process of producing sex cells with half the amount of genetic material as their parental cells.

Mitosis is the process that creates cells responsible for growth and repair.

Mitosis has only one division of cells while meiosis has two divisions.

mitosis is the process whereby one cell divides into two separate cells, each of which contains the same amount of genetic material.

Explanation:

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natta225 [31]

Answer:

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>include cholesterol and saturated fats

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3 years ago

Ice wedging is brought about by ____.

sergiy2304 [10]

C. water freezing and thawing

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4 years ago

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Nerve cells send electrical impulses along the _____. when these impulses reach the end of the neuron, they cause a release of n

Butoxors [25]

Nerve cells send electrical impulses along the axon. When these impulses reach the end of the neuron, they cause a release of neurotransmitters across the synapse.
The axon is part of the neuron (nerve cell that carries messages), as well as dendrite. Axons pass the nerve impulses on to other cells, while dendrite receive nerve impulses from other cells. The place where the axon of one neuron meets the dendrite of another is called a synapse.

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3 years ago

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Which of the following statements is true of proteins? Group of answer choices They are stored in the adipose tissue to provide

Natasha_Volkova [10]

Answer:

They compromise most of the structural materials in the body.

Explanation:

In order to answer the question, we need to analyze each of the answer choices separately.

⇒They are stored in the adipose tissue to provide energy for physical activities.

The statement above refers to fat in particular and lipids in general. ( Lipid is a general term and includes both oil and fats whereas fat refers to lipids which are solid at room temperature. Oil are lipids which are liquid at room temperature.) Fats are one of the key macronutrients in human diet others being proteins and carbohydrates.

Fats are used to store energy in human body. The tissue in which energy in the form of fat is stored is called adipose tissue or body fat.

⇒They comprise most of the structural materials in the body.

The statement above refers to proteins and is the correct answer. They are the most abundant organic compounds in cells and are used for building most of the structures. They are polymers of amino acids.

⇒They are micronutrients that maintain the pH of the body fluids.

The first point in the statement which makes it clear that it does not refer to proteins is the word "micronutrients". Protein is a macronutrient. Macronutrients are required in larger amounts as compared to micronutrients for physiological functioning of human body.

Micronutrients include vitamins and minerals.

⇒They are essential for the body to metabolize and absorb vitamins A, D, E, and K.

Vitamins A,D,E and K are fat-soluble and require fat for their proper absorption. Hence, the statement refers to fat.

5 0

3 years ago

Which describes the process of fermentation?

pav-90 [236]

Explanation:

anaerobic process that restores NAD+ supply

Within cells, aerobic respiration may not occur due to several factors:

- a lack of inorganic, final electron acceptors
-incomplete or lack of a complete electron transport system
-missing genes for enzymes within the Kreb's cycle

Thus, they utilize other means for the generation of energy in the form of ATP and to replenish NAD+ an oxidized form of NADH, the main electron carrier in glycolysis. Pyruvate is produced in the cytoplasm via glycolysis- it is also used as an electron acceptor in a process called fermentation.

Further Explanation:

overall: C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≈38 ATP

In all eukaryotic cells mitochondria are small cellular organelles bound by membranes, these make most of the chemical energy required for powering the biochemical reactions within the cell. This chemical energy is stored within the molecule ATP which is produced. Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’ or Citric acid cycle via the oxidization of pyruvate( through the process of glycolysis in the cytoplasm).

Oxidative phosphorylation describes a process in which the NADH and FADH2 made in previous steps of respiration process give up electrons in the electron transport chain these are converted it to their previous forms, NADH+ and FAD. Electrons continue to move down the chain the energy they release is used in pumping protons out of the matrix of the mitochondria.

This forms a gradient where there is a differential in the number of protons on either side of the membrane the protons flow or re-enter the matrix through the enzyme ATP synthase, which makes the energy storage molecules of ATP from the reduction of ADP. At the end of the electron transport, three molecules of oxygen accept electrons and protons to form molecules of water...

Glycolysis: occurs in the cytoplasm 2 molecules of ATP are used to cleave glucose into 2 pyruvates, 4 ATP and 2 electron carrying NADH molecules. (2 ATP are utilized for a net ATP of 2)
The Citric acid or Kreb's cycle: in the mitochondrial matrix- 6 molecules of CO2 are produced by combining oxygen and the carbon within pyruvate, 2 ATP oxygen molecules, 8 NADH and 2 FADH2.
The electron transport chain, ETC: in the inner mitochondrial membrane, 34 ATP, electrons combine with H+ split from 10 NADH, 4 FADH2, renewing the number of electron acceptors and 3 oxygen; this forms 6 H2O, 10 NAD+, 4 FAD.

Learn more about cellular life at brainly.com/question/11259903

Learn more about cellular respiration at brainly.com/question/11203046

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5 0

3 years ago