iClicker Questions

Question 1

How is an enzymes activity altered?

Answer 1

• Binding of a competitive inhibitor
• Binding of a non-competitive inhibitor
• Change in temperature or pH away from optimal
• Saturation

*All of the above

Question 2

The optimal temperature for all enzymes is body temperature.

Answer 2

False

Question 3

A reduction of free energy means

Answer 3

Exergonic Reaction

Question 4

Demonstrate conversion of chemical energy into kinetic energy

Answer 4

Wake up, eat breakfast, then go on a run.

Question 5

All lipids:

Answer 5

• Do not dissolve well in water.

Question 6

What type of molecule will diffuse most quickly?

Answer 6

• O2

Non polar, small

Question 7

Fresh water fish in salt water?

Answer 7

cells lose water and crenate.

Question 8

What do all cells have

Answer 8

Phospholipid bilayer cell membrane

Question 9

What organelle are absent in plant cells?

Answer 9

• Centrioles

Question 10

Where are enzymes responsible for the synthesis of cell membrane lipids located?

Answer 10

Smooth ER

Question 11

Endosymbiosis theory organelles

Answer 11

Mitochondria and chloroplasts

Question 12

Sickle-cell mutation location

Answer 12

• on exterior of protein making it hydrophobic and tries to get away from water

Question 13

RNA/DNA differentiation

Answer 13

• DNA encodes hereditary info
• DNA forms double helices
• DNA contains Thymine, RNA contains Uracil

Question 14

True of unsaturated fats

Answer 14

• Have a double bond between carbons

- Liquid at room temperature

Question 15

What would happen if cell membrane was hydrophillic?

Answer 15

• it would dissolve and the cell would cease to exist

Question 16

What domains have prokaryotic cells?

Answer 16

• Domain Bacteria and Archaea

Question 17

Do prokaryotic cells have ribosomes?

Answer 17

Yes

Question 18

Do plants have mitochondria?

Answer 18

Yes

Question 19

Microtubules function in cell division

Answer 19

• Move chromosomes during cell division

Question 20

Why are the tails in phospholipids hydrophobic

Answer 20

C and H bonded by non-polar covalent bonds

Question 21

Plant membranes in cold V warm climates

Answer 21

• Cold weather plants have less saturated fats and more unsaturated fats in the membrane to keep fluidity up

Question 22

Peripheral proteins are

Answer 22

Hydrophilic

Question 23

What causes the phospholipid to be hydrophilic?

Answer 23

Phosphate group

Question 24

Hypertonic solution w a hypotonic cell

Answer 24

Water exits(crenates) cell to solution

Question 25

Is osmosis active transport?

Answer 25

No, passive.

Question 26

Does diffusion stop at equilibrium?

Answer 26

Yes.

Question 27

Hypotonic solution and hypertonic cell

Answer 27

Water in and lyses the cell

Question 28

A macromolecule has 500 monomers. How many water are produced?

Answer 28

499(# of bonds)

Question 29

A carbonyl found at the end of a carbon chain is called

Answer 29

an Aldehyde

Question 30

When building a polymer macromolecule ____ happens and a molecule of water is ______

Answer 30

Dehydration synthesis...produced

Question 31

Do our genes determine the primary structure of our proteins?

Answer 31

Yes

Question 32

DNA has 36% adenine. What % of Cytosine?

Answer 32

14%

Question 33

Cocoaine addict has more or less smooth ER?

Answer 33

More

Question 34

What macromolecule has hydrophobic and hydrophilic regions and is important to cell membranes?

Answer 34

Phospholipid

Question 35

What macromolecule is not present in cell membranes?

Answer 35

Nucleic Acids

Question 36

Are dehydration synthesis part of catabolic or anabolic pathways?

Answer 36

Anabolic

Question 37

What molecule does ATP resemble?

Answer 37

RNA Nucleotide

Question 38

A spontaneous reaction would be

Answer 38

Exergonic, catabolic pathway, release energy, negative free energy, break down large molecules into smaller

Question 39

Do enzymes provide activation energy?

Answer 39

No

Question 40

Enzymes___

Answer 40

Lower the activation energy needed for a reaction to occur.