Cells Flashcards

1
Q

The plasma membrane is the most permeable to what?

A

Fatty acids

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2
Q

The lipid bilayer is _____ on the inside because the tails are _____

A

Hydrophobic
Nonpolar

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3
Q

This type of cell junction allows ions in water-soluble molecules to pass freely between cells

A

Gap junction

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4
Q

Fat-soluble or small solutes cross the cell membrane by what?

A

Simple diffusion

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5
Q

True of False

Active transport might be required for moving from high to low concentration

A

False

True statements:
Polar molecule pressing hydrophobic membrane
Large molecule
Pro Tien carries are required

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6
Q

A red blood cell is placed in hypotonic solution. The solution has a _____ sodium concentration down the cell, and the cell tends to _____

A

Lower
Burst

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7
Q

Sodium in glucose, enter the body from the digestive track, moving in the same direction in a what?

A

Symport

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8
Q

What brings material into the cell? What does not?

A

Does:
Endocytosis
Pinocytosis
Phagocytosis

Does not:
Exocytosis

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9
Q

“Cell drinking,” bringing water into the cell:

A

Pinocytosis

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10
Q

DNA is transcribed into RNA where?

A

Nucleus

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11
Q

RNA is translated to protein where?

A

Ribosomes

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12
Q

Sperm move using what?

A

Flagella

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13
Q

Order of organelles/molecules involved in protein synthesis

A

DNA
RNA
Ribosome
Golgi apparatus
Secretory vesicle

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14
Q

What tells the cells to enter the cell cycle and divide?

A

Proto-oncogene

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15
Q

The chromatids separate and a cleavage furrow forms in what? 

A

Anaphase

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16
Q

Centromeres are aligned across the middle of the cell in what?

A

Metaphase

17
Q

What makes a molecule an oxidant? 

A

It takes electrons from the local area (from others)

18
Q

What happens when the body ages?

A

Telomeres shorten
Free radicals produce oxidative damage
Glucose cross-links protein
Mitotic rate decreases