Cell Structure and Function

A solution that is hypotonic to a cell has

• more solutes than the cell.
• fewer solutes than the cell.
• the same concentration of solutes as the cell.
• too many solutes.

Transport proteins play a role in both

• facilitated diffusion and active transport.
• exocytosis and endocytosis.
• diffusion and vesicle transport.
• phagocytosis and passive transport.

Which organelles are involved in the process called endocytosis?

• mitochondria and ribosomes
• lysosomes and vesicles
• phagocytes and centrioles
• macrophages and chloroplasts

Tags

NGSS.HS-LS2-3

Mitochondria and chloroplasts are both sites of

• energy conversion.
• energy manufacturing.
• photosynthesis.
• protein synthesis

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

Which of the following phrases best describes active transport?

• moves substance against concentration gradient
• does not use chemical energy
• forms a vesicle around a large particle
• relies on diffusion of materials

Which model did scientists develop to describe the cell membrane?

• phospholipid model. 
• dynamic model
• fluid mosaic model
• transport model

Which phrase best describes the property of selective permeability?

• all ions pass
• some molecules pass
• large molecules pass
• all molecules pass

Tags

NGSS.HS-LS2-4

Which phrase best describes the process of facilitated diffusion?

• moves molecules against a concentration gradient
• requires ATP
• moves only nonpolar molecules
• requires no energy from the cell

The cell theory states that all organisms are made of cells; cells are the most basic unit of life; and

• all existing cells from by  free-cell formation
• all cells are eukaryotic
• all existing cells are produced by other living cells
• all cells have a nucleus.

Which organelles contain enzymes that break down old cell parts?

• centrosomes
• lysosomes
• vacuoles
• chloroplasts

Tags

NGSS.MS-LS1-7