BIO Lab Exam 1

Question 1

What does the Biuret reagent test for?

Answer 1

Protein

Question 2

Positive Biuret test color :

Answer 2

Purple

Question 3

What does the Benedict solution test for?

Answer 3

Monosaccharides (Simple Sugars)

Question 4

Positive Benedict test color :

Answer 4

(most) Red, Orange, Yellow, Green (least)

Question 5

What does the Iodine test for?

Answer 5

Starch

Question 6

Positive Iodine test color :

Answer 6

Dark Purple / Black

Question 7

What does the Sudan IV test for?

Answer 7

Lipids

Question 8

Positive Sudan IV test color :

Answer 8

Bright Pink or Red Droplets

Question 9

What does pH represent?

Answer 9

The concentration of Hydrogen ions

Question 10

What color is cabbage water alone?

Answer 10

Purple

Question 11

What color is cabbage water when vinegar is added?

Answer 11

Pink (ACIDIC)

Question 12

What color is cabbage water when distilled water is added?

Answer 12

Purple (NEUTRAL)

Question 13

What color is cabbage water when baking soda is added?

Answer 13

Teal (BASIC)

Question 14

What is the pH range of neutral blood?

Answer 14

7.25 - 7.35

Question 15

Does the rate of diffusion increase or decrease as temperature increases?

Answer 15

Increase

Question 16

What is tonicity?

Answer 16

The amount of solute in a solution

Question 17

What is osmosis?

Answer 17

The movement of water through a membrane

Question 18

What happens to a red blood cell in a hypotonic solution?

Answer 18

It will swell/burst.

Question 19

What happens to a red blood cell in a hypertonic solution?

Answer 19

It will shrink/shrivel.

Question 20

What happens to a red blood cell in a isotonic solution?

Answer 20

It will stay the same.

Question 21

Which solution would test positive when using the Biuret test?

Answer 21

Egg Albumin

Question 22

Which solution would test positive when using the Benedict test?

Answer 22

Apple Juice

Question 23

Which solution would test positive when using the Iodine test?

Answer 23

10% Starch Solution

Question 24

Which solution would test positive when using the Sudan IV test?

Answer 24

Oil

Question 25

- Bilayer of phospholipids, glycolipids, and glycoproteins - Cell boundary and involved in various membrane transport mechanisms

Answer 25

Plasma Membrane

Question 26

- Numerous tiny folds containing microfilaments - Allow greater surface area for absorption

Answer 26

Microvilli

Question 27

- Numerous short extensions containing microtubules - Move substances such as mucus

Answer 27

Cilia

Question 28

- Long extension of sperm cell containing microtubules - Moves sperm

Answer 28

Flagellum

Question 29

- Large structure - Center of cellular control

Answer 29

Nucleus

Question 30

- Double membrane boundary of nucleus with pores; continuous with rough ER - Passageway between nucleus and cytoplasm

Answer 30

Nuclear envelope

Question 31

- Non-membranous body containing ribosomal RNA and protein - Location of ribosomal formation

Answer 31

Nucleolus

Question 32

- Strands of DNA and protein - DNA represents genetic control for protein synthesis

Answer 32

Chromatin

Question 33

- Contents between plasma membrane and nucleus containing cytosol fluid and organelles - Location of numerous cellular processes

Answer 33

Cytoplasm

Question 34

- Organelles possessing a membranous covering - Various functions depending on organelle

Answer 34

Membrane-bound organelle

Question 35

- Extensive membrane network with attached ribosomes - Site of of protein synthesis with ribosomes; cellular transport

Answer 35

Rough endoplasmic reticulum

Question 36

- Extensive membrane network lacking ribosomes - Site of of lipid synthesis; cellular transport

Answer 36

Smooth endoplasmic reticulum

Question 37

White blobs close together with pink in between

Answer 37

Adipose tissue

Question 38

Tiny pink dots are red blood cells. Purple dots are nuclei of white blood cells.

Answer 38

Blood tissue

Question 39

Dark pink lines, small black speckles. Kiwi

Answer 39

Cardiac muscle

Question 40

Looks like wood; owl

Answer 40

Compact bone

Question 41

Wavy white and pink

Answer 41

Elastic tissue

Question 42

Light purple with purple speckles; purple triangle cell in the middle

Answer 42

Nervous tissue

Question 43

Half white, half purple. Wavy edge. Oblong nuclei.

Answer 43

Simple columnar

Question 44

White little cubes. Thicker pink outlining. Close together.

Answer 44

Simple cuboidal

Question 45

Hot pink, super close together. Purple nuclei. No space in between

Answer 45

Simple squamous

Question 46

Bricks / striations

Answer 46

Skeletal muscle

Question 47

Bacon; thick pink stripes

Answer 47

Smooth muscle