Homeostasis and Cell Process

Jennifer is learning the parts of the cell and knows that there must be a structure responsible for maintaining the homeostasis of the cell. This structure is which of the following?

• Cell membrane

• Mitochondrion

• Nucleus

• Chloroplast

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As conditions change inside and outside the cell, the cell must adjust to maintain a stable internal environment. Which of the following is NOT an example of how cells maintain homeostasis?

• The cell membrane regulates what enters and exits the cell.

• The nucleus contains all the genetic information of the cell.

• Lysosomes break down molecules to excrete from the cell.

• A cell began to repair skin cells through the process of mitosis.

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Which of the following is the best definition for homeostasis?

• The movement of particles from one side of a cellular membrane to another.

• The tendency of particles to distribute themselves evenly across a membrane.

• The ability to maintain and regulate stable internal conditions of the cell.

• The transfer of molecules in response to excess solute relative to a solution.

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The body functions best with a particular set of conditions: an ideal body temperature, blood pressure, blood sugar level, and many other ideal conditions. Which of the following is NOT true regarding homeostasis?

• All cells undergo cellular processes to maintain homeostasis.

• Homeostasis is a way for cells to maintain internal balance.

• Only certain cells aim to reach cellular homeostasis.

• Ribosomes make proteins for the cell use.

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Anthony notices that after gym class he is always thirsty for water. He knows that is how his body helps maintain a steady, stable internal state called homeostasis. Which of the following is an example of how cells maintain homeostasis?

• The cell membrane is made up of phospholipids.

• The cell is the smallest unit of life.

• Glucose is regulated with the production of insulin.

• Ribosomes make proteins for the cell use.

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Plants have openings on their leaves called stomata, through which gases, including water vapor, can pass in and out of the plant. Plants open and close stomata in

order to regulate the exchange of gases with the atmosphere. Why might it

benefit plants to keep their stomata closed under certain conditions?

• To reduce water loss during a drought

• To increase energy production at night

• To decrease the need for nutrients

• To prevent predation of insects

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All living things strive to maintain homeostasis—it

is what helps them stay alive. Which of the following is true regarding homeostasis?

• Only certain cells need to maintain homeostasis.

• Homeostasis refers to the cells' ability to reproduce.

• All cells undergo processes to maintain homeostasis.

• Homeostasis does not aid in getting rid of cellular waste.

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Mason and Jada are required to design a lab to explore how an organism maintains homeostasis, Which of the following is a good question for them to explore?

• Do plants and animal cells look different under a microscope?

• What happens to plants due to lack of water?

• In what environments are bears found?

• How do mealworms respond to light stimuli?

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Living things maintain homeostasis by getting rid of waste. Which of the following is another way living things maintain homeostasis?

• Hiding from predators

• Attracting a mate

• Extracting energy from food

• Moving through their environment

Which of the following is NOT a way that humans maintain homeostasis?

• Sweating when hot

• Eating when hungry

• Shivering when cold

• Cutting their hair