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Kryger [21]
3 years ago
15

Which answer is not a mechanism for evolution1.Mutations 2.Natural Selections3.Genetic Drift 4.Gene Pool?

Biology
1 answer:
Elden [556K]3 years ago
6 0
4. Gene Pool is not a mechanism, thus your answer!
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During which process is ethanol produced?
Kipish [7]

Answer:

Alcohol fermentation

Explanation:

When oxygen availability is low, the cell can't perform aerobic respiration to breakdown glucose. Instead, anaerobic respiration must be performed. This occurs in cells which consume large amounts of energy, such as muscle cells. Anaerobic respiration produces much less energy than aerobic respiration

One type of anaerobic respiration formed by yeast is called alcohol fermentation (also called ethanol fermentation). This begins with glycolysis, where one molecule of glucose is broke down into 2 molecules of pyruvate. The energy from this reaction generates 2 molecules of ATP, and converts NAD+ to NADH.

Then, the two molecules of pyruvate are further broke down into 2 acetaldehydes (releasing two molecules of carbon dioxide as a by-product). These two molecules of acetaldehyde are then converted into tw molecules of ethanol, using the H ions from NADH, converting it back to NAD+. See the attached picture

This process is taken advantage of to brew beer and wine.

3 0
3 years ago
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since we are made from our dna
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The idea that layers of sediment are always deposited horizontally is called_____.
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Answer: The Principle of Original Horizontality

Explanation: The Principle of Original Horizontality states that layers of sediment are at first deposited horizontally below the movement of gravity. It is a relative relationship technique. The precept is critical to the evaluation of folded and tilted strata.

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3 years ago
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How did the development of technology and academic rivalry influence the Human Genome Project?
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<span>The Human Genome Project had a very negative effect due to development in technology and academic rivalry. With knowledge came bitter rivalry and with technology came the tendency to become God. These angles greatly created negative impact about this project. The experts tried to create human clones, tissue engineering etc.  The scientists tried to analyze a person and get rid of any future disease that might attack them. Some people feel this is good while others feel that it is like distorting the natural process. </span>


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3 years ago
The binding of the neurotransmitter to receptors on the motor end plate causes which of the following to occur?
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The correct answer is: D) Binding of the neurotransmitter causes chemically gated sodium channels to open in the motor end plate (junctional folds of the sarcolemma) and sodium enters the cell.

The motor neuron cell is connected to muscle cell via synaptic cleft, where neurotransmitter is released. The muscle side of this synapse is called motor end plate. Released neurotransmitter is acetylcholine and it binds to its receptor (ACh receptor) on the motor end plate. As it binds, ion channels open, and Na+ gets into the muscle cell. This event reduces the voltage difference between the inside and outside of the cell and causes  depolarization which creates a wave through the entire muscle cell (its membrane-sarcolema). As a consequence, Ca2+ is released from the sarcoplasmic reticulum which will cause the contraction of the muscle cell.

4 0
2 years ago
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