Exam lab

Question 1

compound microscope view is oriented

Answer 1

upside down and right to left

Question 2

what happens to the brightness of the view when you go from 4x to 10x

Answer 2

it goes dimmer

Question 3

which objective, high or low power, provides the greatest depth of field

Answer 3

low power

Question 4

which magnifications require the most illumination for best clarity and contrast

Answer 4

the higher magnification

Question 5

magnification compound microscope

Answer 5

high

Question 6

magnification dissecting microscope

Answer 6

low

Question 7

resolution compound microscope

Answer 7

high

Question 8

resolution dissecting microscope

Answer 8

low

Question 9

size of field of view compound microscope

Answer 9

low

Question 10

size of field of view dissecting microscope

Answer 10

high

Question 11

depth of field compound microscope

Answer 11

low

Question 12

depth of field dissecting microscope

Answer 12

high

Question 13

where are the pigments in these cyanobacteria

Answer 13

photosynthetic membranes called cyloyeds

Question 14

are nuclei visible in cyanobacterial cells

Answer 14

no

Question 15

which of these two genera has the most prominent mucilaginous sheath

Answer 15

gloeocapsa

Question 16

how many cells are held within one sheath of gloeocapsa

Answer 16

multiples of 2

Question 17

What shape are the chloroplasts? what is their function

Answer 17

circular, photosynthesis and capturing light energy

Question 18

where are the chloroplasts located in the cell

Answer 18

toward the perimeter

Question 19

can you see nuclei in Elodea cells

Answer 19

yes

Question 20

why is the granular-appearing cytoplasm more apparent at the sides of the cell rather than in the middle

Answer 20

the vacuoles push the chloroplasts to the wall

Question 21

are all cellular components moving in the same direction and rate during cytoplasmic streaming

Answer 21

yes

Question 22

how do you explain the differences in the apparent shapes and positions of the nuclei in different cells

Answer 22

the vacuole pushes the nuclei to different places

Question 23

what cellular structures of onion are more easily seen in stained as compared to unstained preparations

Answer 23

cell wall, nuclei, vacuoles, and mitochondria

Question 24

do onion cells have chloroplasts

Answer 24

no the live underground

Question 25

what can you conclude about the location of starch in storage cells of potato

Answer 25

located in amyloplasts

Question 26

what are the functions of amyloplasts in potatoes

Answer 26

store starch

Question 27

why are potatoes a good source or carbohydrates

Answer 27

they carry a lot of starch

Question 28

does Amoeba have a cell wall

Answer 28

no they contain protists that break the cell for food

Question 29

movement between amoeba and paramecium

Answer 29

paramecium move faster

Question 30

how do the shape and body consistency differ between amoeba and paramecium

Answer 30

the shape of paramecium is long while amoeba is irregular shaped

Question 31

what structures in amoeba and paramecium also occur in plant cells? what structures in amoeba and paramecium do not occur in plant cells?

Answer 31

Amoeba and paramecium and plant cells both have a nucleus and vacuole.

Question 32

Is Spirogyra branched or unbranched

Answer 32

unbranched

Question 33

What organelles visible in spirogyra are not visible in amoeba and paramecium

Answer 33

chloroplasts

Question 34

for which molecules and ions does your experiment give evidence for passage through the semipermeable membrane

Answer 34

starch and iodine

Question 35

What characteristic distinguishes those molecules and ions passing through the membrane from those that do not pass through the membrane

Answer 35

color change of bag and liquid

Question 36

which temperature damaged membrane the most

Answer 36

70 degrees

Question 37

which temperature damaged the membrane the least

Answer 37

-5 degrees

Question 38

In general which is more damaging to membranes extreme heat or extreme cold

Answer 38

extreme heat, denature the proteins in the membrane

Question 39

are lipids soluble in both acetone and methanol

Answer 39

yes

Question 40

which damages membranes more 50% methanol or 25% acetone

Answer 40

50% methanol

Question 41

In which solvent are lipids most soluble

Answer 41

acetone

Question 42

why must aerobic organisms such as yourself inhale oxygen and exhale CO2

Answer 42

oxygen to accept electrons, CO2 to get rid of waste

Question 43

advantages of anaerobic fermentation

Answer 43

relatively rapid, does not require oxygen

Question 44

disadvantages of anaerobic fermentation

Answer 44

generates only 2 ATPS, produces lactic acid

Question 45

Which compound is intermediate in respiratory pathway

Answer 45

pyruvate

Question 46

Why did tube 6 produce CO2 even though an inhibitor of glycosides was present

Answer 46

because pyruvate was still present

Question 47

did magnesium promote respiration

Answer 47

It didn't because it didn't really change that much

Question 48

What gas is responsible for the holes in baked bread

Answer 48

CO2

Question 49

What does a small number in pigment tell you about the characteristics of the moving molecules

Answer 49

the molecules are large and slow moving

Question 50

Which are more soluble in the chromatography solvent, xanthophyll or chlorophyll a

Answer 50

xanthophyll, it is faster

Question 51

what colors are diminished or absent

Answer 51

blue red violet green

Question 52

was starch stored in the leaf

Answer 52

yes, you can see it on top of the leaf

Question 53

would you expect leaves to be the primary organ for starch storage in plants

Answer 53

no, storage in the stem

Question 54

how does the pattern of starch storage relate to the distribution of chlorophyll

Answer 54

starch is only present where photosynthesis is present