Unit 2 Science Test

Question 1

Glucose:

Answer 1

the sugar that a producer makes to get energy or make energy for other organisms.

Question 2

Systems:

Answer 2

set of connected things or parts forming a complex whole

Question 3

Photosynthesis:

Answer 3

process where plants use the energy of sunlight to produce energy-rich molecules.

Question 4

Cellular Respiration:

Answer 4

small food molecules (like glucose) are converted into a form of energy that cells can use.

Question 5

Decomposers

Answer 5

bacteria & insects, break down organic matter & return nutrients to an ecosystem.

Question 6

Chloroplasts

Answer 6

Plant cells contain chloroplasts that allow them to convert energy.

Question 7

Trophic Level

Answer 7

shows how E is transferred from one stage to the next in a food chain.

Question 8

Nutrients

Answer 8

a substance that provides growth for organisms.

Question 9

Biotic factor

Answer 9

a living organism that shapes where they are living.

Question 10

Carbohydrates

Answer 10

a group of sugars

Question 11

autotroph

Answer 11

is a producer

Question 12

reactants

Answer 12

the substances that are in a formula creating something

Question 13

Mitochondria

Answer 13

Mitochondria are membrane-bound cell organelles

Question 14

atoms

Answer 14

the basic unit of a chemical cell

Question 15

fossil fuels

Answer 15

a natural fuel such as coal or gas, formed in the geological past

Question 16

fats

Answer 16

a natural oily or greasy substance occurring in animal bodies

Question 17

biomass

Answer 17

the total quantity or weight of organisms in a given area or volume.

Question 18

products

Answer 18

products are the species formed from chemical reactions.

Question 19

reservoir

Answer 19

a cavity or part that holds some fluid or secretion

Question 20

autotrophs

Answer 20

an organism that can produce its food using light, water, carbon dioxide, or other chemicals.

Question 21

matter

Answer 21

matter is any substance that has mass and takes up space by having volume.

Question 22

geosphere

Answer 22

the land

Question 23

indirect effects

Answer 23

the impact of one organism or species on another that is mediated or transmitted by a third.

Question 24

Direct effects

Answer 24

deal with the direct impact of one individual on another when not mediated or transmitted through a third individual.

Question 25

proteins

Answer 25

Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues.

Question 26

carbon cycle

Answer 26

The carbon cycle is that part of the biosphere, geosphere, hydrosphere, and atmosphere

Question 27

Heterotroph

Answer 27

A heterotroph is an organism that cannot produce its food

Question 28

food webs

Answer 28

a system of interlocking and interdependent food chains.

Question 29

law of conservation of matter

Answer 29

matter is neither created nor destroyed, so we must have the same number and type of atoms

Question 30

organic

Answer 30

relating to or derived from living matter.

Question 31

biosphere

Answer 31

the regions of the surface, atmosphere, and hydrosphere of the earth

Question 32

water cycle

Answer 32

the cycle of processes by which water circulates between the earth’s oceans, atmosphere, and land

Question 33

nitrogen cycle

Answer 33

the series of processes by which nitrogen and its compounds are interconverted

Question 34

Counting Atoms

Answer 34

the total number of elements minus the numbers on the far left and right which represent subscripts.

Question 35

food chains

Answer 35

a series of organisms each dependent on the next as a source of food.