Lab 2&3: Chemistry & Microscope Flashcards Preview

A&P I - LAB # 2 & 3 > Lab 2&3: Chemistry & Microscope > Flashcards

Flashcards in Lab 2&3: Chemistry & Microscope Deck (29)
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1

PH

MEASURE OF H+ ION CONCENTRATION

2

ACID

-below 7
-increased H+ ion concentration
-H+ acceptor

3

BASE

-above 7
-donor of H+ ion concentration
-increase in OH- concentration

4

BUFFER

Mixture of base/acid that prevents changes in original PH

5

Chemical Reaction

Interaction of atoms and molecules in which bonds are formed, broken and rearranged.

6

Enzyme

A catalyst for reactions by lowering the activation energy and speeding the rate at which the reaction will occur

7

Solute

Substance that gets dissolved (solid)

8

Solvent

Present in higher concentration (liquid)

9

Solubility

How easily a solute will dissolve in a solvent

10

DNA

String of nucleic acids that contains the genetic info and instructions for building proteins

11

What is the role of urinary system in PH regulation

It secretes H+ out of the body to become more basic

12

NORMAL PH RANGE

7.35-7.45

13

Two factors that can affect rate of reaction

Temperature & PH

14

As temperature increases, the rate of reaction ______ and as temperature decreases, rate of reaction _____

Increases; decreases

15

Enzymes

-biological catalyst
-not consumed in reaction
-does not change products
-

16

An enzyme that has lost its shape

Is denatured and is no longer functional

17

Which molecules would be expected to dissolve in water

Polar covalent; ionic bonds

18

Lipase

An enzyme that aids in digestion of fat

19

Phenol Red

Dye that indicates lipase activity

20

Yellow color indicates

Significant fat digestion
Acidic PH

21

Red-orange color indicates

Limited fat digestion
Neutral PH

22

Pink

No or limited fat digestion
Basic PH

23

Magnification of the ocular lens on a compound light microscope

10x

24

Magnification of compound light microscope

40x, 100x, 400x, 1000x

25

IRIS DIAPHRAGM

controls the amount of light that passes

26

LAMP

The microscope's light source

27

THE LENS THAT PROVIDE 100X MAGNIFICATION

Oil immersion lens

28

How do you begin using the magnification of the microscope

you begin with the lowest-power magnification

29

Steps to focus the image on a slide

1. low power mag- adjust w/ coarse then fine knob
2. high power mag- adjust w/ coarse then fine knob