Unit 1A Review

Question 1

What does this safety symbol mean?

Answer 1

corrosive

Question 2

What does this safety symbol mean?

Answer 2

biohazard

Question 3

What does this safety symbol mean?

Answer 3

flammable

Question 4

What does this safety symbol mean?

Answer 4

hot surface

Question 5

What does this safety symbol mean?

Answer 5

dangerous to environment

Question 6

How do you correctly dilute an acid?

Answer 6

Add the acid to the water, not the water to the acid.

Question 7

What is the FIRST thing you should do whenever there is an accident or emergency in the science lab?

Answer 7

alert the teacher

Question 8

Who needs to wear safety glasses?

Answer 8

everyone

Question 9

How do you correctly read volume from a graduated cylinder?

What is the volume of this graduated cylinder?

Answer 9

Read from the lowest point of the curve (meniscus.) The volume of this cylinder is 20 mL.

Question 10

List the 8 characteristics of living things.

Answer 10

Made of Cells

Homeostasis

Reproduction

Materials and Energy

Universal Genetic Code

Growth and Development

Response to Environment

Evolution/Change Over Time (as a population)

Question 11

How many independent variables should be tested at one time?

Answer 11

one

Question 12

What are 2 examples of a nucleic acid?

Answer 12

DNA and RNA

Question 13

What is the primary function of a carbohydrate?

Answer 13

Main source of energy for living things

Question 14

What is the monomer of a protein?

Answer 14

amino acid

Question 15

Because enzymes only catalyze one reaction and must fit with their substrate, we say they are _____.

Answer 15

substrate specific

Question 16

All cell contain a _____, _____ and _____.

Answer 16

cell membrane, genetic material and cytoplasm

Question 17

What are the differences between plant and animal cells?

Answer 17

Plants have chloroplasts, a cell wall and a large vacuole.

Animals have centrioles.

Question 18

What type of bond is used to join amino acids into a protein?

Answer 18

peptide

Question 19

List the principles of the cell theory.

Answer 19

Cells are the basic units of life.

All cells come from other cells.

All organisms are composed of cells.

Question 20

What is the monomer of a carbohydrate?

Answer 20

monosaccharide

Question 21

The variable that is manipulated by the experimenter.

Answer 21

independent

Question 22

This organelle stores materials, especially water

Answer 22

vacuole

Question 23

This organelle is the site of protein synthesis

Answer 23

ribosome

Question 24

What is the monomer of a nucleic acid?

Answer 24

nucleotide

Question 25

What are three functions of a cell's nucleus?

Answer 25

Stores DNA Controls the cell's processes Contains the information to make proteins

Question 26

What is this piece of lab equipment?

Answer 26

beaker

Question 27

What is this piece of lab equipment?

Answer 27

graduated cylinder

Question 28

What is the purpose of an enzyme?

Answer 28

change the speed of a chemical reaction

Question 29

Give an example of a prokaryotic cell.

Answer 29

bacteria

Question 30

This organelle is responsible for energy conversion in the cell

Answer 30

mitochondrion

Question 31

This organelle transports materials within the cell

Answer 31

endoplasmic reticulum

Question 32

This microscope part adjusts the amount of light used to view an organism

Answer 32

diaphragm

Question 33

What is this piece of lab equipment?

Answer 33

test tube rack

Question 34

What is this piece of lab equipment?

Answer 34

forceps

Question 35

What three scientists contributed to the development of the cell theory?

Answer 35

Schleiden, Schwann and Virchow

Question 36

What are the differences between eukaryotic and prokaryotic cells?

Answer 36

Prokaryotes lack membrane-bound organelles.

Question 37

What is this piece of lab equipment?

Answer 37

Erlenmeyer flask

Question 38

This organelle digests large particles in the cell

Answer 38

lysosome

Question 39

This microscope part contains the scanning, low and high power objectives

Answer 39

nosepiece

Question 40

If a substance has a pH of 3, is it an acid or a base?

Answer 40

acid

Question 41

What elements are contained in lipids?

Answer 41

carbon, hydrogen and oxygen

Question 42

List the levels of organization from cell to biosphere.

Answer 42

cell, tissue, organ, organ system, organism, population, community, ecosystem, biome, biosphere

Question 43

Which type of graph is used to compare data in discrete catagories?

Answer 43

bar

Question 44

Which type of graph is used to show change over time with continuous data?

Answer 44

line

Question 45

Which type of graph is used to show percentages and comparison to the whole?

Answer 45

circle

Question 46

Why is a control group a necessary part of an experiment?

Answer 46

It allows the experimenter to make comparisons between groups and valid conclusions.

Question 47

What elements are contained in proteins?

Answer 47

carbon, hydrogen, oxygen, and nitrogen

Question 48

What is this piece of lab equipment?

Answer 48

pipette

Question 49

What elements are contained in nucleic acids?

Answer 49

carbon, hydrogen, oxygen, nitrogen and phosphorus

Question 50

This organelle stores and packages chemicals

Answer 50

Golgi apparatus