Cells and Organelle function with Membrane Transport

There are some similarities between prokaryotic and eukaryotic cells. Which of the following structures is found in both prokaryotic and eukaryotic cells

• lysosome

• mitochondrion

• ribosome

• nucleus

Cells need to bring in molecules to carry out cellular processes. Often, this requires moving the molecules across the cell membrane against the concentration gradient. How do these molecules get into the cell?

• passive transport by diffusion

• active transport using ATP

• passive transport by osmosis

• phagocytosis

Which type(s) of cells have genetic material that is contained in a nucleus?

• bacteria

• only animal cells

• archebacteria

• plant and animal cells

Which characteristic do most plants have in common?

• they are unicellular

• they are prokaryotic

• they are heterotrophic

• they are autotrophic

Plants, like trees, require special tissues to maintain their rigidity so they can grow upwards and branch out. The cells of plants also help with specialized cellular structures. Which of the following cell structures is most important in maintaining the rigidity of plants?

• Cell membrane

• Chloroplasts

• Cytoplasm

• Cell wall

What is a major difference between facilitated diffusion and active transport?

• Facilitated diffusion moves molecules through the plasma membrane against the concentration gradient.

• Active transport uses proteins in the process.

• Facilitated diffusion requires large amounts of energy.

• Active transport moves substances against the concentration gradient.

Which of the following would only be found in a plant cell?

• Structure A and Structure B

• Structure B and Structure D

• Structure A and Structure C

• Structure D and Structure A

Which of the following best explains why a plant cell is eukaryotic?

• It contains membrane-bound organelles that have specific functions.

• It has an outer membrane that helps protect the cell from harsh environments.

• The ribosomes contain instructions to produce specific enzymes that digest other cells.

• The cell lacks structures that allow it to move from place to place in response to predators.

Which of the following best describes a function of structure D?

• Breaks down damaged cell parts

• Produces energy-rich molecules using solar energy

• Increases the amount of DNA in the cell

• Transports materials from one location to another within the cell

Which of the following best explains why some cells have more mitochondria than others?

• The cells use more energy.

• The cells store more nutrients.

• The cells destroy more proteins.

• The cells divide more frequently.