Lab 2&3: Chemistry & Microscope

Question 1

PH

Answer 1

MEASURE OF H+ ION CONCENTRATION

Question 2

ACID

Answer 2

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

Question 3

BASE

Answer 3

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

Question 4

BUFFER

Answer 4

Mixture of base/acid that prevents changes in original PH

Question 5

Chemical Reaction

Answer 5

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

Question 6

Enzyme

Answer 6

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

Question 7

Solute

Answer 7

Substance that gets dissolved (solid)

Question 8

Solvent

Answer 8

Present in higher concentration (liquid)

Question 9

Solubility

Answer 9

How easily a solute will dissolve in a solvent

Question 10

DNA

Answer 10

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

Question 11

What is the role of urinary system in PH regulation

Answer 11

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

Question 12

NORMAL PH RANGE

Answer 12

7.35-7.45

Question 13

Two factors that can affect rate of reaction

Answer 13

Temperature & PH

Question 14

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

Answer 14

Increases; decreases

Question 15

Enzymes

Answer 15

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

Question 16

An enzyme that has lost its shape

Answer 16

Is denatured and is no longer functional

Question 17

Which molecules would be expected to dissolve in water

Answer 17

Polar covalent; ionic bonds

Question 18

Lipase

Answer 18

An enzyme that aids in digestion of fat

Question 19

Phenol Red

Answer 19

Dye that indicates lipase activity

Question 20

Yellow color indicates

Answer 20

Significant fat digestion

Acidic PH

Question 21

Red-orange color indicates

Answer 21

Limited fat digestion

Neutral PH

Question 22

Pink

Answer 22

No or limited fat digestion

Basic PH

Question 23

Magnification of the ocular lens on a compound light microscope

Answer 23

10x

Question 24

Magnification of compound light microscope

Answer 24

40x, 100x, 400x, 1000x

Question 25

IRIS DIAPHRAGM

Answer 25

controls the amount of light that passes

Question 26

LAMP

Answer 26

The microscope’s light source

Question 27

THE LENS THAT PROVIDE 100X MAGNIFICATION

Answer 27

Oil immersion lens

Question 28

How do you begin using the magnification of the microscope

Answer 28

you begin with the lowest-power magnification

Question 29

Steps to focus the image on a slide

Answer 29

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

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