BIOLOGY HIGH SCHOOL

In cells, __________ are proteins that are needed to lower the amount of energy required to start chemical reactions.a. acids
b. enzymes
c. products
d. substrates

Answers

Answer 1
Answer:

Answer:

b. enzymes

Explanation:

For any reaction to happen, an energy barrier must be crossed first. This is called as activation energy. Enzymes are biological catalysts that lower the activation energy for a reaction. As a result the reaction is started sooner and its rate is fast.

The substrate binds to the active site of enzyme to form a substrate-enzyme complex. The reaction takes place and product is formed also releasing the enzyme back so that it can be used again.  
Answer 2
Answer: The answers would be B.
Enzymes accelerate or catalyze ( slow or stop) chemical reactions. And enzymes are protein molecules.
While A, C, and D are not.

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How are genetic mutations passed from parent to offspring?

Answers

they are passed through reproduction

What would happen to the mountain lion population if the deer became extinct?

Answers

The mountain lion population will decrease.
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In eukaryotic cells, the timing of the cell cycle is regulated by?

Answers

cyclin-dependent kinases, or CDKs. Cyclin-dependent kinases trigger the transition between cell cyclephases by phosphorylating substrates within the cell.

Why are Dichotomous keys so hard to do.

Answers

A dichotomous key is a sequence of methods which allows the identification of a living thing.  This key will consist of a series of options or choices that lead the user to the right name of a given item. This is so hard to do because it involves the six taxa. You also need to gather all the significant details and characteristics of the specimen. What makes it harder is the fact that living things are always variable so you need not to rely on a single observation.

Final answer:

Dichotomous keys might seem difficult because they require accurate observations and understanding of specific biological vocabulary. However, with practice, usage of dichotomous keys can become easier. It's similar to learning a new language.

Explanation:

Dichotomous keys might seem challenging because they require a high level of attention to detail and understanding of specific biological terminology. However, with practice, they become easier to use. A dichotomous key is a tool used in biology to identify an unknown organism by going through a series of choices that lead the user to the correct name of a given item.

To correctly use a dichotomous key, you must carefully observe the organism in question and make accurate observations. Then, you follow the key, making decisions based on your observations. This often involves detailed, specific biological vocabulary and precise measurements which some students may initially find overwhelming.

However, remember that with practice and usage, becoming proficient with dichotomous keys is completely achievable. It's essentially like learning a new language! Once you get the hang of it, it can be a valuable tool in your biological studies.

Learn more about Dichotomous keys here:

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A young boy, who is normally gentle and kind, is showing signs of aggression and anger after falling off the monkey bars on the playground and hitting his head hard on the ground. After examination, the doctor determines he has damaged part of his:

Answers

Answer:

Prefrontal cortex

Explanation:the prefrontal cortex is the forward most part of the frontal lobe.it consists about 10% of the brain..it is associated with making decisions and evaluation of right and wrong.it could also influence the personality of a person.

A damage to the prefrontal cortex can cause change in Personality, rudeness and make the person incapable of making good judgement and social skills.

Which of the following statements is true? The buildup of carbon dioxide in the atmosphere causes the greenhouse effect. An increase in pressure causes an increase in reaction rate. The formation of gas bubbles is an indication of a chemical change. all of the above

Answers

All the above ........

D- All of the above  I think
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