Biology Honors Ch. 3 Review

Question 1

A network of proteins that is constantly changing to meet the needs of the cell is the

Accepted Answer

cytoskeleton

Question 2

closely layered stacks of membrane-enclosed spaces that process, sort, & deliver proteins

Accepted Answer

golgi

Question 3

cylinder-shaped organelles made of short microtubules arranged in a circle

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centrioles

Question 4

has the same concentration of dissolved particles as the cell

Accepted Answer

isotonic

Question 5

do not have a nucleus or other membrane bound organelles

Accepted Answer

prokaryotic cell

Question 6

A protein that detects a signal molecule and performs an action in response is a

Accepted Answer

receptor

Question 7

Organelles that carry out photosynthesis

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chloroplast

Question 8

Drives molecules across a membrane from a region of lower to higher concentration

Accepted Answer

active transport

Question 9

a type of endocytosis in which the cell membrane engulfs large particles

Accepted Answer

phagocytosis

Question 10

organelles that contain enzymes that break down damaged or worn out cell parts & defend cell

Accepted Answer

lysosome

Question 11

The difference in the concentration of a substance from one location to another

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concentration gradient

Question 12

supply energy to the cell

Accepted Answer

mitochondria

Question 13

a jellylike substance found in the cell that contains dissolved molecular building blocks

Accepted Answer

cytoplasm

Question 14

solution has a lower concentration of dissolved particles than a cell

Accepted Answer

hypotonic

Question 15

fluid-filled sacs used for the storage of materials needed by a cell

Accepted Answer

vacuole

Question 16

describes the arrangement of molecules that make up a cell membrane

Accepted Answer

fluid mosaic model

Question 17

Process of taking liquids or fairly large molecules into a cell by engulfing them in a membrane

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endocytosis

Question 18

have a nucleus and other membrane bound organelles

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eukaryotic cells

Question 19

small membrane bound sacs that divide & transport materials from place to place within the cell

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vesicle

Question 20

The storehouse for most of the genetic information, or DNA, in cells

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nucleus

Question 21

movement of molecules in fluid or gas from higher concentration to lower concentration

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diffusion

Question 22

One of the first unifying concepts of biology that summarizes three major principles is the

Accepted Answer

cell theory

Question 23

When water molecules diffuse from an area of higher concentration to lower concentration

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osmosis

Question 24

rigid layer that gives protection, support, and shape to the plant cell

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cell wall

Question 25

The release of a substance out of a cell by the fusion of a vesicle with the membrane

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exocytosis

Question 26

The movement of molecules across a cell membrane without energy input from the cell

Accepted Answer

passive transport

Question 27

is the diffusion of molecules across a membrane through transport proteins

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facilitated diffusion

Question 28

allows some, but not all, materials to cross

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selective permeability

Question 29

A solution that has a higher concentration of dissolved particles than a cell is

Accepted Answer

hypertonic

Question 30

a molecule that is composed of a charged phosphate group, glycerol, and two fatty acid chains

Accepted Answer

phospholipid

Question 31

Structures specialized to perform distinct processes within a cell

Accepted Answer

organelles

Question 32

tiny organelles that link amino acids together to form proteins

Accepted Answer

ribosomes

Question 33

controls the passage of materials into and out of a cell

Accepted Answer

cell membrane

Question 34

An interconnected network of thin, folded membranes where proteins & lipids are produced

Accepted Answer

ER

Biology Honors Ch. 3 Review

Questions 34

Biology Honors Ch. 3 Review

Questions 34