science 7a final review

Question 1

What tool is used to measure length,mass,volume

Answer 1

ruler, triple beam balance,a graduated cylinder,

Question 2

what units are used to measure length, mass

Answer 2

meter,liter,gram

Question 3

What unit is used to measure temperature

Answer 3

thermometer

Question 4

what are the parts of a microscope

Answer 4

eye piece,course adjustment knob,fine adjustment knob,body tube,revolving nose piece,objective lense,diaphragm

Question 5

How do you focus a microscope

Answer 5

course adjustment knob

Question 6

How do calculate total magnification

Answer 6

eyepiece x objective = total magnification

Question 7

What are the steps to the scientific method

Answer 7

state the problem,research,make a hypothesis,test your hypothesis,analyze data, draw a conclusion

Question 8

define a hypothesis

Answer 8

educated guess

Question 9

What is a control and variable in an experiment

Answer 9

control group=conditions controlled. experimental group= variable

Question 10

define biology

Answer 10

study of life

Question 11

define botany

Answer 11

the study of plants

Question 12

define zoology

Answer 12

the study of animals

Question 13

define nutrition

Answer 13

obtaining necessary materials for life

Question 14

define ingestion

Answer 14

to take in food

Question 15

define excretion

Answer 15

removing wastes/removal

Question 16

define digestion

Answer 16

to break down food

Question 17

define circulation

Answer 17

the movement inside an organism

Question 18

define irritability

Answer 18

ability to detect and respond to stimuli

Question 19

define locomotion

Answer 19

the ability to remove from place to place

Question 20

define sythesis

Answer 20

to make or build

Question 21

define stimulus and response and give an example

Answer 21

stimulus is the change response to the reaction(when you put your hand on a hot pot and take it off)

Question 22

define reproduction

Answer 22

the abiity to produce an offspring

Question 23

define metabolism

Answer 23

chemical reactions within an organism

Question 24

define homeostasis

Answer 24

maintaining a steady balance

Question 25

what is a cell

Answer 25

basic unit of life

Question 26

what is the function of the nucleus

Answer 26

directs all the activities of the cell.

Question 27

What is the function of the cell membrane

Answer 27

allows certain materials to enter and leave the cell

Question 28

function of cytoplasm

Answer 28

cell liquid

Question 29

function of chloroplasts

Answer 29

solar pannel

Question 30

function of mitochondrion

Answer 30

glucose is broken down (aerobic respiration) using oxygen

Question 31

function of ribosomes

Answer 31

site of protein synthesis

Question 32

function of endoplasmic reticulum

Answer 32

moves stuff inside the cell

Question 33

function of golgi bodies

Answer 33

package and move protiens out of the cell

Question 34

what are the four elements found in living things

Answer 34

CHON-carbon,hydrogen,oxygen,nitrogen