Cells

Question 1

a structure in a cell that has a specific job to do

Answer 1

organelle

Question 2

nucleus

Answer 2

a dark round structure that controls the cell’s activities

Question 3

when a cell divides and becomes two cells

Answer 3

mitosis

Question 4

cells

Answer 4

small and alive; can perform functions of life

Question 5

cell membrane

Answer 5

surrounds and protects the contents of the cell; controls what can enter or leave the cell

Question 6

chloroplast

Answer 6

captured energy from the sun and uses it to make food

Question 7

cell wall

Answer 7

found in plant cells; thick and rigid structures made up of cellulose

Question 8

vacuole

Answer 8

stores food, waste and substances that the cell cannot use immediately

Question 9

takes up a large part of the cell and is a jelly like watery fluid

Answer 9

cytoplasm

Question 10

selectively permeable

Answer 10

some things can pass through and others cannot

Question 11

microscope

Answer 11

am instrument that makes things look bigger by bending light through a lens

Question 12

makes energy for the cell

Answer 12

mitochondria

Question 13

7 Characteristics of Living Things

Answer 13

Movement
Reproduction
Growth
Response
Excretion
Exchange of Gases
Nutrition

Question 14

movement

Answer 14

ability of an organism to bend and sway (sessility) or relocate (motility)

Question 15

nutrition

Answer 15

ability of an organism to acquire and process foods/nutrients

Question 16

response

Answer 16

ability of an organism to react to a stimulus

Question 17

excretion

Answer 17

ability of an organism to get rid of waste

Question 18

reproduction

Answer 18

ability of organism to proliferate and pass on its traits

Question 19

growth

Answer 19

ability of an organism to increase in size through cell growth or division

Question 20

exchange of gases

Answer 20

animals: the ability to take in oxygen and breathe out carbon dioxide
plants: ability to take in carbon dioxide and release oxygen

Question 21

probably the first cells on earth

Answer 21

prokaryotic cells

Question 22

which organelles do plant cells have but animal cells don’t?

Answer 22

chloroplast
cell wall
one large vacuole

Question 23

the only prokaryotic cells on earth

Answer 23

bacteria

Question 24

what is a plant cell wall made of?

Answer 24

cellulose

Question 25

are cells bigger than atoms?

Answer 25

true

Question 26

found inside the nucleus of the cell

Answer 26

DNA

chromosomes

Question 27

what kind of cells do people have?

Answer 27

eukaryotic

Question 28

how many different kinds of cells does the human body have?

Answer 28

over 200

Question 29

atoms have smaller parts called _______.

Answer 29

protons
neutrons
electrons

Question 30

water always moves from _____ to _____

Answer 30

higher to lower concentration

Question 31

example of a unicellular organism

Answer 31

stentor

Question 32

body’s fastest growing organ

Answer 32

skin

Question 33

some non living things have characteristics of life (ie candle)

Answer 33

true