Unit 1A Review Flashcards Preview

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Flashcards in Unit 1A Review Deck (50):
1

What does this safety symbol mean?

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corrosive

2

What does this safety symbol mean?

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biohazard

3

What does this safety symbol mean?

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flammable

4

What does this safety symbol mean?

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hot surface

5

What does this safety symbol mean?

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dangerous to environment

6

How do you correctly dilute an acid?

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

7

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

alert the teacher

8

Who needs to wear safety glasses?

everyone

9

How do you correctly read volume from a graduated cylinder?  

What is the volume of this graduated cylinder?

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

10

List the 8 characteristics of living things.

Made of Cells

Homeostasis

Reproduction

Materials and Energy

Universal Genetic Code

Growth and Development

Response to Environment

Evolution/Change Over Time (as a population)

11

How many independent variables should be tested at one time?

one

12

What are 2 examples of a nucleic acid?

DNA and RNA

13

What is the primary function of a carbohydrate?

Main source of energy for living things

14

What is the monomer of a protein?

amino acid

15

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

substrate specific

16

All cell contain a _____, _____ and _____.

cell membrane, genetic material and cytoplasm

17

What are the differences between plant and animal cells?

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

Animals have centrioles.

18

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

peptide

19

List the principles of the cell theory.

Cells are the basic units of life.

All cells come from other cells.

All organisms are composed of cells.

20

What is the monomer of a carbohydrate?

monosaccharide

21

The variable that is manipulated by the experimenter.

independent

22

This organelle stores materials, especially water

vacuole

23

This organelle is the site of protein synthesis

ribosome

24

What is the monomer of a nucleic acid?

nucleotide

25

What are three functions of a cell's nucleus?

Stores DNA

Controls the cell's processes

Contains the information to make proteins

26

What is this piece of lab equipment?

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beaker

27

What is this piece of lab equipment?

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graduated cylinder

28

What is the purpose of an enzyme?

change the speed of a chemical reaction

29

Give an example of a prokaryotic cell.

bacteria

30

This organelle is responsible for energy conversion in the cell

mitochondrion

31

This organelle transports materials within the cell

endoplasmic reticulum

32

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

diaphragm

33

What is this piece of lab equipment?

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test tube rack

34

What is this piece of lab equipment?

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forceps

35

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

Schleiden, Schwann and Virchow

36

What are the differences between eukaryotic and prokaryotic cells?

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Prokaryotes lack membrane-bound organelles.

37

What is this piece of lab equipment?

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Erlenmeyer flask

38

This organelle digests large particles in the cell

lysosome

39

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

nosepiece

40

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

acid

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41

What elements are contained in lipids?

carbon, hydrogen and oxygen

42

List the levels of organization from cell to biosphere.

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

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43

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

bar

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44

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

line

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45

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

circle

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46

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

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

47

What elements are contained in proteins?

carbon, hydrogen, oxygen, and nitrogen

48

What is this piece of lab equipment?

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pipette

49

What elements are contained in nucleic acids?

carbon, hydrogen, oxygen, nitrogen and phosphorus

50

This organelle stores and packages chemicals

Golgi apparatus