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Biology Test 2 - Ch 5-8 > iClicker Questions > Flashcards

iClicker Questions Flashcards

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1
Q

How is an enzymes activity altered?

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

*All of the above

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2
Q

The optimal temperature for all enzymes is body temperature.

A

False

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3
Q

A reduction of free energy means

A

Exergonic Reaction

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4
Q

Demonstrate conversion of chemical energy into kinetic energy

A

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

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5
Q

All lipids:

A
  • Do not dissolve well in water.
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6
Q

What type of molecule will diffuse most quickly?

A
  • O2

Non polar, small

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7
Q

Fresh water fish in salt water?

A

cells lose water and crenate.

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8
Q

What do all cells have

A

Phospholipid bilayer cell membrane

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9
Q

What organelle are absent in plant cells?

A
  • Centrioles
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10
Q

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

A

Smooth ER

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11
Q

Endosymbiosis theory organelles

A

Mitochondria and chloroplasts

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12
Q

Sickle-cell mutation location

A
  • on exterior of protein making it hydrophobic and tries to get away from water
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13
Q

RNA/DNA differentiation

A
  • DNA encodes hereditary info
  • DNA forms double helices
  • DNA contains Thymine, RNA contains Uracil
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14
Q

True of unsaturated fats

A
  • Have a double bond between carbons

- Liquid at room temperature

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15
Q

What would happen if cell membrane was hydrophillic?

A
  • it would dissolve and the cell would cease to exist
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16
Q

What domains have prokaryotic cells?

A
  • Domain Bacteria and Archaea
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17
Q

Do prokaryotic cells have ribosomes?

A

Yes

18
Q

Do plants have mitochondria?

A

Yes

19
Q

Microtubules function in cell division

A
  • Move chromosomes during cell division
20
Q

Why are the tails in phospholipids hydrophobic

A

C and H bonded by non-polar covalent bonds

21
Q

Plant membranes in cold V warm climates

A
  • Cold weather plants have less saturated fats and more unsaturated fats in the membrane to keep fluidity up
22
Q

Peripheral proteins are

A

Hydrophilic

23
Q

What causes the phospholipid to be hydrophilic?

A

Phosphate group

24
Q

Hypertonic solution w a hypotonic cell

A

Water exits(crenates) cell to solution

25
Q

Is osmosis active transport?

A

No, passive.

26
Q

Does diffusion stop at equilibrium?

A

Yes.

27
Q

Hypotonic solution and hypertonic cell

A

Water in and lyses the cell

28
Q

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

A

499(# of bonds)

29
Q

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

A

an Aldehyde

30
Q

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

A

Dehydration synthesis…produced

31
Q

Do our genes determine the primary structure of our proteins?

A

Yes

32
Q

DNA has 36% adenine. What % of Cytosine?

A

14%

33
Q

Cocoaine addict has more or less smooth ER?

A

More

34
Q

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

A

Phospholipid

35
Q

What macromolecule is not present in cell membranes?

A

Nucleic Acids

36
Q

Are dehydration synthesis part of catabolic or anabolic pathways?

A

Anabolic

37
Q

What molecule does ATP resemble?

A

RNA Nucleotide

38
Q

A spontaneous reaction would be

A

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

39
Q

Do enzymes provide activation energy?

A

No

40
Q

Enzymes___

A

Lower the activation energy needed for a reaction to occur.

Biology Test 2 - Ch 5-8 (5 decks)

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