Study Guide: Cell Function

Which of the following is not a passive transport process?

Diffusion of water through a selectively permeable membrane in the presence of at least one impermeant solute is referred to as:

The trapping of bacteria by specialized white blood cells is an example of

A hypertonic solution is one that contains

The force of a fluid pushing against a surface could be described as

Facilitated diffusion is a metabolically expensive process

The sodium-potassium pump is an example of an active transport process

Cellular secretion can be achieved by exocytosis

Solutes are particles dissolved in a solvent.

Osmosis is a form of filtration that results in the separation of small and large solute particles.

[blank_start]Hypertonic[blank_end]: solution that draws water from a cell [blank_start]Isotonic[blank_end]: two fluids that have the same potential osmotic pressure [blank_start]Hypotonic[blank_end]: solution that causes cells to swell [blank_start]Diffusion[blank_end]: passive transport [blank_start]Endocytosis[blank_end]: active transport

Enzymes that cause essential chemical reactions to occur are called

Molecules that are acted upon by enzymes are known as

In naming enzymes, the root name of the substance whose chemical reaction is catalyzed is followed by the suffix

Most enzymes

Which of the following activates enzymes by means of an allosteric effect?

Enzymes are

The three processes that compose cellular respiration are glycolysis, the citric acid cycle, and the electron transport system.

The portion of an enzyme molecule that chemically "fits" the substrate molecule(s) is referred to as the active site.

The "lock and key" model is used to describe how DNA base pairs align.

Protein anabolism is a major cellular activity.

The citric acid cycle is also known as the Krebs cycle.

Glycolysis is aerobic.

Which of the following statements is not true of glycolysis?

The Krebs cycle takes place in the

The third step in cellular respiration is

The energy required for active transport processes is obtained from

Movement of substances from a region of high concentration to a region of low concentration is

Osmosis is the [blank_start]diffusion[blank_end] of water across a selectively permeable membrane.

A molecule or other agent that alters enzyme function by changing its shape is called:

Glycolysis is a catabolic pathway that begins with glucose and ends with:

Which movement always occur down a hydrostatic pressure gradient?

The "uphill" movement of a substance through a living cell membrane is

Membrane pumps are an example of which type of movement?

An example of a cell that performs phagocytosis

A saline solution that contains a higher concentration of salt than living red blood cells would be

A red blood cell becomes engorged with water and will eventually lyse, releasing hemoglobin into the solution. This solution is [blank_start]hypotonic[blank_end] to the red blood cell.

Protein "tunnels": [blank_start]membrane channels[blank_end] Phagocytosis: [blank_start]endocytosis[blank_end] Enzyme: [blank_start]pepsin[blank_end] Enzymes that add or remove carbon dioxide: [blank_start]carboxylases[blank_end] "Cell drinking": [blank_start]pinocytosis[blank_end] Type of membrane channel: [blank_start]aquaporins[blank_end] Facilitated diffusion: [blank_start]carrier-mediated passive transport[blank_end] Glycolysis: [blank_start]first stage of cellular respiration[blank_end] Molecule able to diffuse across a particular membrane: [blank_start]permeant[blank_end]