Chapter 3 Flashcards

1
Q

What are the two stages of protein synthesis?

A

Transcription- occurs in the nucleus
Translation-occurs in the cytoplasm

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2
Q

Hydrophobic

A

Tails-water fearing

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3
Q

Hydrophilic

A

Heads-Water loving

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4
Q

Describe the structure of the plasma membrane

A

Phospholipid bilayer with proteins embedded throughout

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5
Q

What are 3 types of cell junctions?

A

Tight- tightly stitched together
Ex: bladder tissue
Desmosomes-Velcro (gives wiggle room)
Ex: muscle tissue
Gap- chemical to electrical attachment
(Communication)
Ex:cardiac muscle

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6
Q

What are the 3 types of tonic solutions

A

Hypotonic,ionic, and hypertonic

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7
Q

What happens to a cell in a hypotonic solution?

A

Cells swell and burst
⬇️ solutes/⬆️ H20

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8
Q

What happens to a cell in a ionic solution

A

The cell is at equilibrium/no movement of H2O

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9
Q

What happens to a cell in a hypertonic solution?

A

Cell loses H20 & shrink (crenate)
⬆️solutes/⬇️H20
Ex: salt on a slug

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10
Q

What is active transport?

A

Requires ATP
Moves against gradient

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11
Q

What is a gene?

A

Segment of DNA codes for one protein

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12
Q

Describe simple diffusion

A

Flows directly through bilayer-lipid soluble

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13
Q

Describe facilitated diffusion

A

Assisted by protein (boat ride)
H2O passes through aquaporins
H20/protein soluble

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14
Q

Describe diffusion

A

Moving things across membrane
High➡️Low concentration solution
Passive-no energy used

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15
Q

Describe osmosis

A

Diffusion of H20

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16
Q

What are the 4 stages of mitosis

A

Prophase
Metaphase
Anaphase
Telophase

17
Q

What is mitosis?

A

Cell division

18
Q

Mitochondria

A

Power house of the cell

19
Q

Centrioles

A

Aids in mitosis

20
Q

Lysosome

A

Digestive enzymes

21
Q

Nucleus

A

Controls the cell activities

22
Q

Nuclear membrane

A

Allows material to move into an out of nucleus

RNA pass through pores

23
Q

Cytoplasm

A

Chemical reaction takes place here

24
Q

Ribosome

A

Protein builders of the cell
Translate genetic code to amino acids
Site of protein synthesis

25
Q

Endoplasmic reticulum

A

Connect membrane
Moves material

26
Q

Rough endoplasmic reticulum (E.R)

A

Process protein

*ribosomes

27
Q

Smooth endoplasmic reticulum (E.R)

A

Production and storage of carbs and lipids

*no ribosomes

28
Q

Golgi apparatus

A

Sorts and packs protein into vesicle and transports them

29
Q

In what phase does the cell begin to divide

A

Telophase

30
Q

What phase do chromosomes start to line up along the middle of the cell

A

Metaphase

31
Q

What phase do the chromosomes start to pull apart

A

Anaphase

32
Q

In what phase of mitosis does the nuclear membrane breakdown and to spindles form?

A

Prophase