Science Exam

Question 1

Eukaryotic

Answer 1

have a nucleus, have linear DNA

Question 2

Prokaryotic

Answer 2

do not have a nucleus, have circular DNA (deoxyribonucleic acid)

Question 3

Needs of life

Answer 3

air, food, water, place to live

Question 4

Density

Answer 4

density is the mass per unit volume
obtain mass then divide
mass divided volume
liquid: TBB + grad. cyl, g/mL
irregular: TBB + grad. cyl + water, g/cm3
regular: TBB + ruler, g/cm3

Question 5

Volume

Answer 5

amount of space an object or substance takes up
Liquid: grad. cyl., milliliter base unit: liters
Regular: ruler, lxwxh = cm3 unit used: cm

Question 6

Height

Answer 6

the bottom to top distance of an object
a ruler, meter

Question 7

Mass

Answer 7

the amount of matter in an object or substance
TBB, grams
mass container + substance
empty the container and mass it and subtract

Question 8

Temperature

Answer 8

warmth or coldness of an object measure of kinetic energy
thermometer, celsius

Question 9

weight

Answer 9

measure of the distance between two objects due to gravity
a measure of force
spring scale, newtons

Question 10

length

Answer 10

longest side of an object
ruler, meter

Question 11

width

Answer 11

front to back or left to right distance of an object
ruler, meter

Question 12

Homeostasis

Answer 12

an organism’s natural ability to maintain a stable or balanced internal state

Question 13

Biogenesis

Answer 13

living things came from other living things

Question 14

Scientific Method

Answer 14

1. State the problem by asking a question
2. Construct Hypothesis
3. Test by Experimenting
4. Analyze Data and Draw Conclusions
5. Communicate Results

Question 15

What is an Independent variable

Answer 15

the thing that is changed

Question 16

what is a dependent variable

Answer 16

the thing that is measured

Question 17

what is the controlled/constant variable

Answer 17

the thing(s) that stay the same

Question 18

What is an inference

Answer 18

an assumed fact based on available information

Question 19

what is quantitative observations

Answer 19

Quantitative Observations are observations relating to counting or measuring and will always include an amount

Question 20

what is qualitative observations

Answer 20

observations centered around the use of your five senses and do not include a numerical amount

Question 21

Spontaneous Generation

Answer 21

living things come from non-living things

Question 22

What are the levels of organization

Answer 22

Human Body Organ Systems,
composed of organs working together,
composed of various tissues working together,
composed of cells of the same type working together.

Question 23

Characteristics of Life (6)

Answer 23

Have DNA, Have Cells, Sense and respond to environmental changes,
Grow and Develop, Use Energy, Reproduce