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3 years ago

Sudhi is studying the motion of a toy car. She places the car in the middle of a ramp and releases it.

1 answer:

8 0

Hello. Your question is incomplete. However, when researching, I managed to find a question like yours and found that you forgot to mention that the question wants you to determine which is the best reference point in this scenario.

Answer:

The best point of reference is the starting position of the toy car.

Explanation:

To study the movement of the car it is necessary for Sudhi to establish a reference point, so that she can calculate all the variables associated with this movement. The best variable in this scenario is the starting position of the car, when it is still on the ramp. Thus, Sudhi needs to determine the distance between the car and the ground, that is, what the car's starting position is. She will be able to discover this when determining the height of the ramp.

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What happens if mitosis becomes unregulated

exis [7]

Answer:

if mitosis is unregulated, cancer cells could multiply continuously or create defective daughter cells.

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3 years ago

The first model of enzyme action was proposed in 1894 by Emil Fischer. In this model, the lock is the enzyme and the key is the

Andrews [41]

Answer:

The correct answer is "the induced fit model".

Explanation:

The first model that looked to explain the enzyme and substrate interaction was the "lock and key" model. Although this model helped scientists to understand the specificity nature of the interaction enzyme-substrate, it does not reflect reality since enzyme was portrayed as a lock with a structure that doesn't change during the catalysis. Then half century later "The induced-fit theory" was proposed which fits much better the newer version of the enzyme action model. In this theory the enzyme is partially flexible and its structure changes as a result of its interaction with the substrate.

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3 years ago

Explain how the student may have measured the polyphenol oxidase activity.

Sophie [7]

Answer:

Polyphenol oxidase (PPO) activity was determined by measuring the initial rate of quinone formation,

as indicated by an increase in the absorbance units (AUs) at 420 nm. An increase in absorbance of 0.001 min−1 was taken as one unit of enzyme activity

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3 years ago

If two organisms have different traits, then they probably

ki77a [65]

Dont live in the same climate or region. Just a guess. Hope this helps.

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3 years ago

if you wanted to test red blood cells for their ability to complete glycolysis, what compound would you try to detect

Artemon [7]

Answer:

Pyruvate

Explanation:

Glycolysis refers to the pathway through glucose is oxidized to pyruvate.

In glycolysis, a molecule of glucose passes through ten enzyme catalyzed steps to yield two molecules of pyruvate.

Step 1: Glucose is phosphorylated to form glucose-6-phosphate

Step 2: Glucose-6-phosphate is converted to fructose-6-phosphate

Step 3: Fructose-6-phosphate is further phosphorylated to form fructose-1,6-bisphosphate

Step 4: Fructose-1,6-bisphosphate is cleaved into glyceraldehyde-3-phosphate and dihydroxyacetone phosphate

Step 5: Dihydroxyacetone phosphate is converted to another molecule of glyceraldehyde-3-phosphate.

Step 6: Two molecules of Glyceraldehyde-3-phosphate are converted to two molecules of 1,3-bisphosphoglycerate

Step 7: Two molecules of 1,3-bisphosphoglycerate are converted to 3-phosphoglycerate

Step 8: Two molecules of 3-phosphoglycerate are converted to two molecules of 2-phosphoglycerate

Step 9: Two molecules of 2-phosphoglycerate are converted to two molecules of phosphoenolpyruvate

Step 10: Two molecules of phosphoenolpyruvate are converted to two molecules of pyruvate, the end-product of glycolysis.

Therefore, the presence of pyruvate molecules in red blood cells can be used to test for their ability to complete glycolysis

6 0

3 years ago