Unit 2 - All About Cells Review

Question 1

specific reactant that an enzyme acts on

Accepted Answer

substrate

Question 2

This structure provides supportfor the cell.

Accepted Answer

cytoskeleton

Question 3

The diffusion of water across a selectively permeable membrane

Accepted Answer

osmosis

Question 4

Cell junction found in plant cells for exchange of water, nutrients and chemical signals.

Accepted Answer

plasmodesmata

Question 5

concentration of solute is the same on both sides of a membrane.

Accepted Answer

isotonic

Question 6

This organelle serves as a warehouse which stores, modifies, and packages proteins.

Accepted Answer

golgi apparatus

Question 7

My DNA is kept in a region called a nucleoid.

Accepted Answer

prokaryotic

Question 8

Biologist say the cell membrane as what type of model because it is flexible and made of parts?

Accepted Answer

fluid mosaic model

Question 9

This type of transport does not require energy to move molecules across the plasma membrane.

Accepted Answer

passive

Question 10

Movement of certain particles across the membrane with help from a protein.

Accepted Answer

facilitated diffusion

Question 11

The cell membrane is ____ ____ meaning that only certain objects can go in and out of the cell.

Accepted Answer

selectively permeable

Question 12

Control of water balance

Accepted Answer

osmoregulation

Question 13

block substrates from entering the active site and reduce an enzyme’s productivity.

Accepted Answer

competitive inhibitor

Question 14

These are embedded in the cell/plasma membrane and carry out many functions for the cell.

Accepted Answer

proteins

Question 15

Ability to maintain a constant internal environment in response to environmental changes.

Accepted Answer

homeostasis

Question 16

Part of the largest organelle within the endomembrane system and has 2 types.

Accepted Answer

endoplasmic reticulum

Question 17

Hydrophobic part of the cell/plasma membrane.

Accepted Answer

tail

Question 18

This organelle contains Eukaryotic cell’s DNA and controls all activities of the cell.

Accepted Answer

nucleus

Question 19

This structure is secreted by animal cells andprovides extra support for the plasma membrane.

Accepted Answer

extra cellular matrix

Question 20

All living things are made of cells that come from other cells and are the basic unit of life

Accepted Answer

Cell Theory

Question 21

I contain DNA, ribosomes, a cell membrane, and cytoplasm.

Accepted Answer

both eukaryotic & prokaryotic cells

Question 22

solute concentration is lower outside of an animal cell, water molecules move into the cell.

Accepted Answer

hypotonic

Question 23

These are made of tubulin and act as tracks for organelles to move along.

Accepted Answer

microtubules

Question 24

bind to the enzyme somewhere other than the active site, change the shape of the active site

Accepted Answer

noncompetitive inhibitor

Question 25

Transport when a cell must expend energy to move a solute against its concentration gradient.

Accepted Answer

active

Question 26

Found in plant cells,but not animal cells.Carries out photosynthesis.

Accepted Answer

chloroplasts

Question 27

A substrate fits into a region of the enzyme called the

Accepted Answer

active site

Question 28

Found in plant, but not animal cells. Gives plant cells their structure.

Accepted Answer

cell wall

Question 29

I am small and simple, I DO NOT have internal organelles

Accepted Answer

prokaryotic cell

Question 30

This organelle is responsible for making proteins in both prokaryotic and eukaryotic cells.

Accepted Answer

ribosomes

Question 31

Organisms in the Domains Bacteria and Archaea composed of _______ cells.

Accepted Answer

prokaryotic

Question 32

Used to export bulky molecules, such as proteins or polysaccharides

Accepted Answer

exocytosis

Question 33

The tendency of particles to spread out evenly in an available space.

Accepted Answer

diffusion

Question 34

Active transport that regulates ion concentrations by “pumping” them in or out of the cell.

Accepted Answer

membrane protein pump

Question 35

These cell surface structures are more numerous and shorter than flagella.

Accepted Answer

cilia

Question 36

Inorganic enzyme helpers.

Accepted Answer

cofactors

Question 37

Used to take in large, bulky molecules, such as proteins or polysaccharides.

Accepted Answer

endocytosis

Question 38

Organelle(s) that carries out cellular respiration in all eukaryotic cells

Accepted Answer

mitochondria

Question 39

Found in animal cells, but not plant cells. Responsible for cleaning up the cell.

Accepted Answer

lysosome

Question 40

Protein channel that allows water to diffuse through the membrane.

Accepted Answer

aquaporin

Question 41

The molecule that is the source of energy for active transport.

Accepted Answer

ATP

Question 42

Composed of a phospholipid bilayer

Accepted Answer

plasma membrane

Question 43

The solute concentration is higher outside the cell, water molecules move out of the cell.

Accepted Answer

hypertonic

Question 44

Passive transport doesn’t require energy because molecule move naturally down their

Accepted Answer

concentration gradient

Unit 2 - All About Cells Review

Questions 44

Unit 2 - All About Cells Review

Questions 44