Lab practical

Question 1

T/F: You are allowed to eat small snacks in the lab

Answer 1

false

Question 2

T/F: you are able to take breaks as needed

Answer 2

true

Question 3

Noticing and gathering information to formulate a question

Answer 3

Observation

Question 4

A suggested explanation for an event or phenomenon

Answer 4

Hypothesis

Question 5

Design to carry out and test the hypothesis made

Answer 5

Experiment

Question 6

Data collected and analyzed to formulate a conclusion on whether the hypothesis is supported or refuted

Answer 6

result/analysis

Question 7

Factor that is CHANGED or MANIPULATED

Answer 7

Independent variable

Question 8

Factor that is MEASURED by experimenter

Answer 8

Dependent variable

Question 9

Factors that may influence the outcome that are kept CONSTANT so they do not change during an experiment

Answer 9

control variable

Question 10

Used to show how a variable changes OVER TIME or in response to another continuous variable

Answer 10

Line graph

Question 11

Used to COMPARE independent or categories. y axis starts at zero and shows values, while categories are on the x-axis

Answer 11

bar graph

Question 12

used to show relationship (correlation) between TWO VARIABLES. Each point represents a pair of values

Answer 12

scatter graph

Question 13

Used to compare PARTS to a WHOLE, often with percentages or money

Answer 13

pie graph

Question 14

The X-axis represents the _________ variable

Answer 14

independent

Question 15

The Y-axis represents the _________ variable

Answer 15

dependent

Question 16

the title of graphs must include what 2 things?

Answer 16

• units
• axis variables

Question 17

length is recorded in ________

Answer 17

meters

Question 18

weight is recorded in ______

Answer 18

grams

Question 19

volume is recorded in ________

Answer 19

liters

Question 20

Name 5 common tools for metric measurements

Answer 20

• rulers
• measuring tape
• meter stick
• beaker
• balance

Question 21

_______ has limited length (usually 30 cm) and small parallax errors if not viewed directly

Answer 21

ruler

Question 22

____: can stretch or sag; less accurate for very short distances

Answer 22

measuring tape

Question 23

_____: (high accuracy) harder to use on small or flexible objects

Answer 23

Meter stick

Question 24

______: Thick walls and wide marking reduce accuracy; good for rough measurements, not for precise volume work

Answer 24

beaker

Question 25

_____: must be calibrated; affected by air currents or unlevel surfaces

Answer 25

balance

Question 26

what can you use to clean the objective lens or ocular's of a microscope?

Answer 26

lens paper

Question 27

When can you use coarse focus?

Answer 27

when objective lens is at 4X

Question 28

T/F: never use coarse focus on high-power or oil-immersion objectives (40x or 100x)

Answer 28

True

Question 29

what steps should you take before changing the objective to a higher magnification?

Answer 29

- center specimen - ensure clear focus from previous stage - lower stage for space

Question 30

How do you safely change which objective lens you are using?

Answer 30

Move the nosepiece gently NOT the objective lenses

Question 31

how do you use stage clips

Answer 31

pull back stage clip to flatly insert microscope slide

Question 32

how do you calculate total magnification for your image

Answer 32

total magnification = ocular lens x objective lens

Question 33

When you are ready to put away your microscope, which objective is selected, and where is the stage?

Answer 33

objectieve lens at 4X with stage lowered fully

Question 34

______ looks like little dots forming a bigger circle

Answer 34

prophase

Question 35

______ looks like a pom-pom

Answer 35

metaphase

Question 36

_____ looks like grass is growing on opposite sides of the cells

Answer 36

anaphase

Question 37

______ looks like two smaller balls on the opposite on the ends of the cell

Answer 37

telophase

Question 38

seeing 1 copy of a specific chromosome when there should be 2 (pair)

Answer 38

monosomy

Question 39

seeing 3 copies of a specific chromosome instead of 2 (pair)

Answer 39

trisomy

Question 40

how are you able to identify gender by chromosome shape

Answer 40

check 23rd pair - same size (female) - one is smaller (male)

Question 41

chromosomes that code for the SAME gene

Answer 41

homologous chromosome

Question 42

replicated chromosomes attached at the centromeres so they do not get mixed up

Answer 42

sister chromatids

Question 43

what is an autosome?

Answer 43

genes on chromosome (1-22)

Question 44

what are sex chromosomes?

Answer 44

chromosome 23

Question 45

color and physicality are examples of

Answer 45

phenotype

Question 46

YY, Yy, yy are examples of

Answer 46

genotypes

Question 47

sex cell (eggs or sperm), haploid are

Answer 47

gametes

Question 48

fertilize egg, diploid is a

Answer 48

zygote

Question 49

one copy of each gene

Answer 49

haploid

Question 50

two copies of each gene

Answer 50

diploid

Question 51

two identical copies of a trait

Answer 51

homozygous

Question 52

two different variations of a gene

Answer 52

heterozygous

Question 53

having only one allele for a gene

Answer 53

hemizygous

Question 54

Practice punnet squares

Answer 54

OK

Question 55

which part of the micropipette allows: draw and release of liquid

Answer 55

plunger

Question 56

which part of the micropipette allows: draws up liquid

Answer 56

first stop

Question 57

which part of the micropipette allows: dispense liquid

Answer 57

second stop

Question 58

which part of the micropipette allows: shows volume being drawn up

Answer 58

volume indicator

Question 59

which part of the micropipette allows: disposal ends containing liquid

Answer 59

pipette tips

Question 60

T/F: When loading a sample in electrophoresis gel, you do not need a clean pipette tip

Answer 60

false