Biology Review Questions

Which statement BEST describes how embedded proteins help a plasma membrane perform its function?

• They prevent waste material from leaving a cell.

• They prevent water molecules from entering a cell.

• They allow certain kinds of molecules to enter or leave a cell.

• They allow substances dissolved in water to enter or leave a cell.

Mitchell is creating a model of a plant cell. Mitchell wants to include organelles that are involved in energy production for the cell. Which organelles should Mitchell include?

• Mitchell should use mitochondria to store energy and cytoplasm to release energy from food.

• Mitchell should include the nucleus to transform light energy and chloroplasts to store energy.

• Mitchell should include cytoplasm to store energy and lysosomes to release energy from food.

• Mitchell should include chloroplasts to transform light energy and mitochondria to release energy from food.

Sydney created a cell model for her science project as shown above. Sydney needs to label her model. Which statement BEST describes the type of model Sydney created?

• Sydney has created a plant cell model because only plant cells contain chloroplasts and a cell wall.

• Sydney has created an animal cell model because only animal cells contain a nucleus and a cell wall.

• Sydney has created a plant cell model because only plant cells contain cytoplasm and a cell membrane.

• Sydney has created an animal cell model because only animal cells contain chloroplasts and a cell membrane.

Which describes an interaction between the Golgi apparatus and another organelle to maintain a cell's homeostasis?

• The Golgi apparatus stores nutrients provided by the mitochondria.

• The Golgi apparatus sorts and packages proteins created by ribosomes.

• The Golgi apparatus collects genetic information to be used by the nucleus.

• The Golgi apparatus sends and receives chemical signals for the membrane.

In a cell, the information that controls the production of proteins must pass from the nucleus to what other cell structure?

• mitochondrion

• cell membrane

• chloroplast

• ribosome

The fluid-mosaic model of the cell membrane suggests that the membrane is primarily composed of proteins and lipids. Which of the following is a function of proteins in the cell membrane?

• to allow substances to cross the plasma membrane via active transport

• to provide a hydrophilic head so that water can enter the cell

• to package and sort molecules to be sent in vesicles

• to read messenger RNA to assemble amino acids

Which of the following are NOT found in both plant and animal eukaryotic cells?

• vacuoles

• nuclei

• mitochondria

• chloroplasts

Which of the following is the most accurate statement comparing cell membranes and cell walls?

• Cell walls prevent everything from entering the cell, while cell membranes allow some things to enter.

• Cell membranes function mostly as selectively permeable gatekeepers while cell walls function mainly as support systems.

• Cell membranes are found only in animal cells; cell walls are found only in plant cells.

• Cell walls function mostly for photosynthesis while cell membranes function mostly for cellular respiration.

An environmental toxin is discovered that interferes with certain cellular functions. When affected cells are examined, it is observed that proteins are normally found in the plasma membrane are instead found in the cytoplasm. Other proteins are also located improperly. Which structure is most likely affected by the toxin?

• Lysosomes

• Mitochondria

• Cell Wall

• Golgi apparatus

Which term best completes the concept map above?

• an animal cell

• a prokaryotic cell

• a virus

• a plant cell