prelim Flashcards

1
Q

used to make objects appear larger

A

magnifying glass

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2
Q

used for measuring and storing liqiuds

A

beaker

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3
Q

used to measure the temperature of a liquid

A

thermometer

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4
Q

it is a measuring instrument for determining the weight or mass of an object

A

balance scale

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5
Q

used for growing microbiology cultures

A

petri-dish

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6
Q

a thin glass plate used to cover samples mounted on a microscope slide

A

cover slip

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7
Q

a device used to view objects which are too small to see or explore with your eye alone

A

microscope

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8
Q

used to cut through skin and muscles and remove organs

A

scissors

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9
Q

used to cut tissues

A

scalpel

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10
Q

used to secure specimens to dissection tray

A

dissecting pin

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11
Q

very precise glassware for measuring liquids

A

graduated cylinder

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12
Q

used for measuring volatile liquids

A

erlenmeyer flask

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13
Q

for holding small items and for holding skin/muscle etc. during dissections

A

forceps

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14
Q

used to time experiments

A

timer

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15
Q

eye peotection

A

goggles

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16
Q

for liquids and microbiology cultures

A

test tubes

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17
Q

used for measuring length and width of an object

A

centimeter ruler

18
Q

used to dispense liquids drop by drop or by the ml

A

pipet

19
Q

used for moving liquids from one container to another

A

funnel

20
Q

for securing test tubes

A

test tube rack

21
Q

what is the general shape of the onion cells?

A

rectangular shape

22
Q

describe what you saw without the stain

A

the cell is not totally visible

23
Q

is the onion skin composed of one cell or many cells?

A

many cells

24
Q

why is it easier to see the onion cells after they stained

A

because it gives stain to epidermal cell making it more visible

25
Q

all plant have cell walls. what is the function of the cell wall

A

for protection and growth

26
Q

does the egg feel hard or soft

A

it feels soft

27
Q

difference between this egg and a regular egg

A

yes, the regular egg has shell and the shell of the vinegar egg dissolve

28
Q

what do you think happened to the egg when it was covered with vinegar?

A

its shell reacted to the vinegar which makes the shell dissolve

29
Q

did you learn anything new from conducting the egg in vinegar experiment? explain?

A

yes, the acetic acid in the vinegar trigger the shell which has calcium carbonate makes the shell dissolve

30
Q

define protein denaturation

A

the destruction of tertiary structure

31
Q

what are the 3 parts of a nucleotide

A

deoxyribose, phosphate, organic base

32
Q

list the different kinds of nitrogen

A

Adenine
Thymine
Cytosine
Guanine

33
Q

is there always going to be an equal number of adenine and thymine nucleotides in molecule? why?

A

yes, due to hydrogen bond so apparently they are complimentary pair

34
Q

the sides of ladder are made up of alternating _____ and _______ molecules. The steps or rungs of the ladder are made up of ______ held together by hydrogen bond

A

deoxyribose
phosphate
nitrogen base

35
Q

DNA

A

deoxyribonucleic acid

36
Q

RNA

A

ribonucleic acid

37
Q

shape of DNA

A

double helix

38
Q

organic base paired to adenine

A

uracil

39
Q

how many strands make up DNA

A

two

40
Q

how many strands make up rna

A

one