Homeostasis

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

• Chloroplast

• Cell Theory

• Vacuole

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.

• Lysosomes break down molecules to excrete from the cell.

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

• The nucleus contains DNA for the cell.

Which of the following is the best definition for homeostasis?

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

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

• The tendency of an organism or cell to maintain a BALANCED state to maintain health and function.

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

All living things strive to maintain homeostasis what helps them stay alive. Which of the following is true regarding homeostasis?

• Only certain cells need to maintain homeostasis.

• All cells undergo processes to maintain homeostasis.

• Homeostasis refers to the cells ability to reproduce.

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

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

• Cutting their hair

• Sweating when hot

• Eating when hungry

• Shivering when cold

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

• Attracting a mate

• Hiding from predators

• Extracting energy from food

• Moving through their environment

What is the definition of exocytosis?

• A reaction that produces oxygen gas as a waste product.

• A process that removes cell waste through the cell membrane. Waste is EXITING the cell.

• Moving substances from a lower concentration to a higher concentration.

• A cell process in which substances are brought into the cell.

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?

• Only certain cells aim to reach cellular homeostasis.

• All cells undergo cellular processes to maintain homeostasis.

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

• Homeostasis aids in extracting waste from cells.

What is the basic unit of living things?

• Mitochondrion

• Nucleus

• Homeostasis

• Cells

Which part of the cell is the lipid barrier that encloses the cytoplasm and controls what enters and exits the cell?

• Mitochondrion

• Nucleus

• Cell Membrane

• Chloroplast