Cells & Cell Theory

The heart is an organ in the human body to assist in circulation. How can you describe the heart?

• It is more complex than an organ system, but less complex than an organism.

• It is more complex than a tissue but less complex than an organ system.

• It is more complex than an organism, but less complex than an organ system.

• It is more complex than a molecule, but less complex than a cell.

A tissue is made of multiple types of ___________ that have similar functions.

• cells

• molecules

• organs

• atoms

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Which level of organization is less complex than a cell?

• organ system

• organism

• organ

• molecule

Which level of organization is less complex than the organ?

• organ system

• organ

• tissue

• organism

Why do cells take food into the cell and remove waste products?

• the process of mitosis

• to destroy the cell

• the process of meiosis

• to maintain homeostasis

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What would occur if a cell could not maintain homeostasis?

• the cell would move

• the cell would not survive

• the cell would divide

• the cell would multiply

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Mitosis is when cells divide to replace cells in the body. Cells have a way of dividing at a regulated pace. Why is this process important?

• to divide more rapidly

• to divide more slowly

• to maintain homeostasis

• to maintain diffusion

All cells survive by maintaining homeostasis. which of the following is an example of this?

• dividing into 5 cells

• synthesizing proteins and cytoplasm

• creating and using energy

• input and output from nerve endings

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Removing waste and energy production are important processes for homeostasis. Our cells need nutrients. What would happen if cells couldn't allow nutrients to enter?

• no photosynthesis could happen

• cells would not achieve homeostasis

• the cell membrane is clogged

• cells divide at double the pace

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How does the cell membrane help the cell achieve homeostasis?

• RNA transcription is carried out there

• cell walls provide a net for harmful materials

• the membrane regulates DNA replication

• regulates materials that enter and exit the cell

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