Bio EOC Review 4

Cell membranes are primarily composed of a double layer of phospholipids. Why are phospholipids particularly well suited to serving as membranes?

• They can be used to metabolize starches.

• They create a selectively permeable membrane.

• They can work together to perform chemiosmosis.

• They form a membrane that is impermeable to chemicals.

Which statement correctly explains a difference between the cells of prokaryotes and the cells of eukaryotes?

• Eukaryotic cells reproduce using DNA; prokaryotic cells use RNA only to reproduce.

• Eukaryotic cells have fewer distinct parts than prokaryotic cells because they are less evolved.

• Eukaryotic cells do not have cell walls or vacuoles; prokaryotic cells have both of these features.

• Eukaryotic cells have a nucleus and membrane-bound organelles; prokaryotic cells lack these features.

Which of the following best explains the difference between passive and active transport within cell membranes?

• Passive transport does not require chemical energy to occur; active transport requires energy, such as ATP.

• Passive transport happens only in the presence of water, while active transport does not require water to occur.

• Passive transport moves larger substances through the cell membrane; smaller molecules must move by active transport.

• Passive transport allows whole particles to move through the membrane, while active transport breaks particles down before they can pass through.

Which of the following statements correctly explains the role of lysosomes within a cell?

• The lysosome prepares fats and lipids for transport throughout the cell by sorting and encasing them.

• The lysosome uses oxygen to convert sugar into chemical energy and also controls the metabolism of the cell.

• The lysosome breaks down molecules that are not needed within the cell and returns some of the products of digestion to the cell for later use.

• The lysosome isolates water and other molecular compounds and stores them so they can be used later by the cell, or expels them as waste products.

Tags

NGSS.HS-LS2-3

Which of the following structures would be present in a plant cell, but not in an animal cell?

• a. nucleus, mitochondria, chloroplasts

• b. chloroplasts, cell wall, central vacuole

• c. cell wall, mitochondria, Golgi apparatus

• d. central vacuole, Golgi apparatus, nucleus

Tags

NGSS.MS-LS1-6

Which of the following statements best describes the nucleus of a cell?

• It controls the activities of the cell and contains genetic material.

• It provides energy to the cell.

• It supports and protects the cell.

• It helps in the movement of the cell.

Tags

NGSS.MS-LS1-2

Which of the following is a structure that is present in both eukaryotic and prokaryotic cells?

• Golgi complex

• plasma membrane

• nucleus

• vacuole

Which of the following statements best describes the function of the lipid bilayer in the cell membrane?

• Lipids attract water on both sides of the bilayer.

• Lipid-soluble material cannot pass through a lipid bilayer.

• Proteins can only transport uncharged particles through the lipid bilayer.

• Proteins distributed along the bilayer can allow water to pass through the membrane.

Which of the following statements correctly explains the function of the Golgi apparatus within a cell?

• The Golgi apparatus uses oxygen to convert sugar into chemical energy and also controls the metabolism of the cell.

• The Golgi apparatus contains most of the genetic material within the cell and is responsible for gene expression and DNA replication when the cell divides.

• The Golgi apparatus prepares new macromolecules such as fats and lipids by sorting and encasing them before sending them to the correct destination within a cell.

• The Golgi apparatus breaks down molecules that are not needed within the cell, and returns some of the products of digestion to the cell for use in building new cell parts.

Which of the following is a characteristic shared by both plant and animal cells?

• Chloroplasts

• large central vacuole

• mitochondria

• rigid cell walls