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BSC 2010 - Biology I > Exam #3 > Flashcards

Flashcards in Exam #3 Deck (183)
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31

Where do you find a concentration of potassium about the cell?

INSIDE

32

______ out, ________ in

Sodium, potassium

33

The sodium/potassium pump moves sodium ____ of the cell and potassium ____ the cell

out, into

34

What source of energy? (Na/K pump)

ATP

35

ATP has three phosphates on it...by breaking off a phosphate, you liberate _______

energy

36

So ATP becomes ___ and a _____ _______ _______

ADP, free inorganic phosphate

37

The Na/K Pump is essential to maintaining ___________ in animal cells

osmoregulation

38

Secondary (2º) active transport involves the movement of ____ substances.

two

39

What are those two substances?

1) The MOLECULE you're intending to transport
2) The ION that's driving the transport

40

Since two substances are always transported by secondary active transport, sometimes it's called "__________", since you're actually moving two substances across the membrane at the same time.

"co-transport"

41

How is the sodium providing energy for the glucose to come in? What's so energetic about this sodium ion?

It is arranged in a GRADIENT. There's more outside than inside, it wants to go down!

42

So how does the ion provide energy?

It's in a gradient

43

Does secondary (2º) active transport require ATP?

NOOOOOO

44

Is primary (1º) active transport driven by ATP?

YESSSS

45

Source of energy..... (direct/indirect ATP use)

Primary (1º) active transport:
Secondary (2º) active transport:

Primary (1º) active transport: direct ATP use
Secondary (2º) active transport: indirect ATP use

46

Plant cells do it another way...they have primary active transport that pumps _______ outside of the cell.

protons

47

What fuels secondary active transport?

Proton gradient

48

It's always an ____ _______ providing that energy.

ion gradient

49

Channels can be referred to as "_____."

static

50

We have a way of forcing a substance up the concentration gradient. How does that work? Well, you provide ______,. Either the energy is ___, and that's going to generally pump ______ across the membrane.
Or the second way it could work is _________ _______ ______ where we use an ____ gradient as a source of energy.

energy, ATP, ions, secondary active transport, ion

51

We can move stuff out of the cell, or bring stuff in. If we move stuff out, we call that ________. If we move stuff in, we call that _________.

exocytosis, endocytosis

52

Exocytosis is simply ________

secretion

53

_________ is an example of endocytosis. "Eating"

Phagocytosis

54

Phagocytosis is generally ___-______. A lot of substances can come into the cell by phagocytosis

non-specific

55

Receptor mediated endocytosis depends upon a ______ in the cell membrane.

receptor. What type of molecule is a receptor? It's a PROTEIN.

56

So receptor mediated endocytosis is a very ______ mechanism of transport

specific

57

Energy that is available is called ______ _______.

free energy

58

What fuels metabolism?

Free energy

59

The building of biochemistry is what?

Anabolism

60

The breakdown of biochemistry is what?

Catabolism