Answer:
B
Explanation:
The cell membrane is like a gate around the cell, it only lets certain substances come in and out of the cell.
The correct option is 3.
Enzymes are biological catalysts which speed up the rate of biochemical reactions inside the cells. Enzymes are very specific in action and they require specific conditions called optimum conditions for them to function optimally.
When the optimum conditions are not met, an enzyme's activity will be lowered or totally stopped.
Conditions that affect the optimum activity of an enzyme include: temperature, pH level and regulatory activity of regulatory enzymes and hormones.
People behave the way they do because of situation as well as genetics.
<h3>Why people behave the way they do?</h3>
People behave as they do in response to the way they are treated by other people as well as in response to situation. In their behaviour, they have also a genetic factor that influence their behaviour.
So we can conclude that people behave the way they do because of situation as well as genetics.
Learn more about behaviour here: brainly.com/question/1741474
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Gene. A segment<span> of a </span>DNA<span> molecule that </span>codes<span> for a particular protein and determines the </span>traits<span> (phenotype) of the individual. A gene is the basic unit of heredity in a living organism. Hopefully that helps!
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Answer:
Mechanical Energy
Explanation:
In physics, "mechanical energy is the sum of potential energy and kinetic energy."
