Questions

Question 1

You NEVER use which of the following once you switch to the high power or oil immersion objectives?

Answer 1

coarse adjust knob

Question 2

Egg yolks have a pH of 5.6; milk has a pH of 6.6; orange juice has a pH of 3.6; and water has a pH of 7. What is the difference in hydrogen ion concentration between milk and orange juice?

Answer 2

1000 times

Question 3

What is the core purpose of scientific investigations?

Answer 3

understanding the world around us

Question 4

what is the name of the covalent bond that forms between glycerol and fatty acids in phospholipids and triglycerides?

Answer 4

ester bonds

Question 5

Simple Diffusion

Answer 5

a substance that is soluble in the lipid bilayer and moves across the membrane from a point of high concentration to low concentration

Question 6

What enzyme is important for fat digestion?

Answer 6

lipase

Question 7

A cellular diameter of 40 micrometers is equivalent to

Answer 7

0.04 mm

Question 8

Which form of lipids is used to store excess energy that is consumed by mammals?

Answer 8

triglycerides

Question 9

Which of the following membrane constituents is most likely to determine the selectivity of the cell membrane?

Answer 9

proteins

Question 10

When using a microscope the ability to see two items as separate and discrete entities is?

Answer 10

resolution

Question 11

Which section of you lab report serves as a brief summary of the entire experiment?

Answer 11

abstract

Question 12

What is not essential in the process of research (testing an idea)?

Answer 12

testing an entire population

Question 13

Which functional group is most responsible for some organic molecules having bases?

Answer 13

amino groups

Question 14

What is the function of carbohydrates in the cell membrane?

Answer 14

cell to cell recognition

Question 15

Simple diffusion differs from facilitative diffusion because

Answer 15

simple diffusion is not saturable and

facilited diffusion are limited by the number of functional membrane proteins and can be saturated

Question 16

What is the standard magnification of the ocular lens?

Answer 16

10

Question 17

A t test is used

Answer 17

to compare two sample means

Question 18

A substance with a low pH is

Answer 18

an acid

Question 19

A substance with a high pH is

Answer 19

a base

Question 20

what is the most inorganic molecule in the body>?

Answer 20

water

Question 21

what is common monosaccharide?

Answer 21

fructose

Question 22

When comparing two solution, the one with the greater number of solute molecule is ___ to the solution with fewer solute molecules?

Answer 22

hypertonic

Question 23

what enzyme is involved in the digestion of starch?

Answer 23

amylase

Question 24

The aperture of which objective lens is largest

Answer 24

scanning lens

Question 25

When viewing a specimen under the microscope you place the slide on the

Answer 25

stage

Question 26

Standard deviation

Answer 26

measure of experiment variation (individual variation from one subject to another)

Question 27

What are the respective sizes of virus and platn cell?

Answer 27

30 naometers 30 micrometers

Question 28

Hypothesis

Answer 28

tentative explanation for some phenomenon that can be tested experimentally

Question 29

What is the standard pore size of the dialysis tubing?

Answer 29

10,000 daltons

Question 30

term that means that if an object is focused with the low power objective, it is focused when you switch to the high power objective?

Answer 30

parfocal

Question 31

What is the light source used with a compound light microscope

Answer 31

visible light

Question 32

The difference in concentraiton of a solute across a membrane is called

Answer 32

concentration gradient

Question 33

Cells must produce many different enzymes because

Answer 33

most cellular reactions require a specific unique enzyme

Question 34

What is the role of smooth ER in skeletal muscle?

Answer 34

calcium storage

Question 35

where can amoeba be found?

Answer 35

aqueous environments

Question 36

What feature makes phospholipids amphipathic?

Answer 36

one end is hydrophilic and one end is hydrophobic

Question 37

Describe the cell membrane

Answer 37

molecules form a double later with the polar regions facing the cell interior and the outside of the cell, and hydrophobic regions forming the interior of the cell membrane

Question 38

Which enzyme is involved in the digestion of starch?

Answer 38

amylase