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Bio 11 Lab: Test 1 > test 1 > Flashcards

test 1 Flashcards

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1
Q

Order of metric units

A

Meter 1

Centimeter 0.01

Millimeter 0.001

Micrometer 0.000001

Nanometer 0.000000001

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2
Q

binocular dissecting microscope studies?

A

larger 3d object at low magnification

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3
Q

Compound Microscope studies?

A

small thinly sliced objects under higher magnification than binoculars

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4
Q

What are the 2 lenses in coumpound microscope?

A
  1. ocular lense: near eyes
  2. objective lense: near object
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5
Q

How do you improve contrast in compound microscope?

A

stains, dyes (iodine)

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6
Q

how do Transmission Electron Microscope work?

A

use beam of electrons magnified on photographic plate using electromagnets

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7
Q

how are Transmission Electron Microscope objects contrasted?

A

thin sliced + treated with metal salts for contrast

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8
Q

Scanning electron microscope

A

gives 3d dimensions with smaller objects

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9
Q

What microscope part holds the eyepiece lenses that account for different eye ability?

A

Binocular Head

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10
Q

What are the 2 lenses located on binocular head of dissecting mocroscope?

A

eyepiece lenses

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11
Q

What is the large black knob located on the arm of the binocular dissecting microscope? what does it do?

A

Focusing knob; changes focus of both eyepieces together

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12
Q

What is the knob built into the binocular head of the dissecting microscope? what does it do?

A

Magnification changing knob; zooms in simultaneously

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13
Q

What lights up the object from about on the dissecting microscope?

A

illuminator

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14
Q

What are the different magnifying power on compound microscopes?

A

4, 10, 40, 100

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15
Q

What part of the compound microscope holds the nose piece and eyepiece and conducts light?

A

body tube

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16
Q

What does the 4 lense do on the compound microscope?

A

scanning power objective; scans the whole slide

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17
Q

What does the 10 lense on compound microscopes do?

A

low power objective; vews object in greater detail

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18
Q

What does the 40 lense do on the compound microscope?

A
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19
Q

What does the 100 lense do on the compound microscope?

A

oil immersion; used with immersion oil to see with greatest magnification

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20
Q

what do you use to bring object into approx focus?

A

coarse adjustment knob

21
Q

What is used on compound microscope to bring into final focus?

A

fine adjustment knob

22
Q

what is below the stage and used to focus the light on a compound microscope?

A

condensor

23
Q

how are objects seen through the lense?

A

upside down

24
Q

If an object is in focus at a low power and also in focu at a high power it is?

A

parfocal (compound microscope)

25
Q

What is final item placed on wet mount before viewing with a microscope?

A

cover slip

26
Q

What does arrow stand for in chemical reactions?

A

change

27
Q

reactants in enzymatic reaction are called?

A

substrate

28
Q

where on an enzyme do substrates come together?

A

active site

29
Q

If enzyme is boiled, what happens to enzyme?

A

becomes counter productive

30
Q

If enzyme is warmed, what happens to its activity?

A

speeds up

31
Q

a control for effect of warm temp would lack?

A

pH concentration

32
Q

if more enzyme used, what happens to smount of product per unit time?

A

increases

33
Q

what must be held constant when testing effect of enzyme concentration on enzyme activity?

A

pH temp

34
Q

What product of catalase reaction causes bubbling?

A

02

35
Q

What is varied when testing effect of pH on enzyme activity?

A

pH level

36
Q

If pH is unfavorable, what happens to enzyme activity?

A

decreases

37
Q

During what stage does DNA replication occur?

A

interphase

38
Q

what phase do sister chromatids separate?

A

anaphase

39
Q

what process does cytoplasm of human cell separate?

A

cytokinesis

40
Q

in what phase do duplicated chromosomes first appear?

A

prophase

41
Q

where does meiosis occur?

A

in sex organs

42
Q

what structure in plants cells accomodate cytokinesis?

A

cell plate

43
Q

what are chromosomes that look alike and carry genes fr same traits?

A

homologues

44
Q

At what phase do homolgues separate?

A

anaphase

45
Q

What is a dihybrid cross?

A

when 2 dihybrid individuals (AaBb) reproduce the phenotypic ratio is 9:3:3:1

46
Q

Sex linked genes

A

genes located on sex chromosomes that afect traits other than sex (color blindness)

47
Q

How do you calculate volume?

A

length x width x depth

48
Q
A

Bio 11 Lab: Test 1 (1 decks)

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