Part 1 Flashcards

Cell cycles, division and organelles

1
Q

What is the major distinction between prokaryotes and eukaryotes?

A

Prokaryotes don’t have membrane-bound organelles

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2
Q

What organelles do prokaryotes and eukaryotes both have?

A

DNA, cellular membrane, cytoplasm and ribosomes

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3
Q

What about water makes it such an important substance?

A

It’s intermolecular hydrogen bonds

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4
Q

What are the four main groups of macromolecules?

A

Proteins, Carbohydrates, Nucleic Acid and Lipids

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5
Q

What is the polymer made from amino acids?

A

Protein

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6
Q

What is the polymer made from monosaccharides?

A

Carbohydrates

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7
Q

What is the polymer made from nucleotides?

A

Nucleic Acid

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8
Q

What is the macromolecule made of hydrocarbons, fatty acids and glycerol?

A

Lipids

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9
Q

What are the three main types of lipids?

A

Triglycerides, Phospholipids, and Steroids

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10
Q

What type of membrane transport is used for small, non polar molecules?

A

Simple Diffusion

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11
Q

What type of membrane transport is used for large, polar molecules?

A

Facilitated Diffusion

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12
Q

What type of membrane transport is used for molecules going across the concentration gradient?

A

Active Transport

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13
Q

What type of transport requires energy?

A

Active Transport

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14
Q

What type of transport doesn’t require energy?

A

Passive Transport

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15
Q

What organelle is a key player in both endocytosis and exocytosis?

A

Vesicles

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16
Q

What is the difference between endocytosis and exocytosis?

A

Endo = brings in
Exo = removes

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17
Q

What are the three types of endocytosis?

A

Phagocytosis (cell eating), Pinocytosis (cell drinking) and Receptor-Mediated (specific, receptors)

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18
Q

What is the function of ribosomes in the cell?

A

Protein synthesis

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19
Q

What is the difference between the smooth and rough endoplasmic reticulum?

A

sER produces hormones and lipids

rER has attached ribosomes and makes proteins

20
Q

What is the function of the mitochondria in the cell?

A

Site of cellular respiration, makes ATP, powerhouse of cell

21
Q

What is the function of the cell membrane?

A

Regulates what enters and exits cell

22
Q

What is the function of a cell wall?

A

Gives the cell shape and structure

23
Q

What is the function of a vacuole?

A

stores water and waste

24
Q

What is the function of lysosomes?

A

‘garbage disposals’, break down macromolecules to be reused

25
What is the function of chloroplasts?
Site of photosynthesis, produces glucose, gives plants green pigment
26
What is the function of the Golgi apparatus?
Packaging center, helps prepare things to enter, exit and move through cell
27
What is the main goal of cellular respiration?
To produce ATP for the cell
28
Which step in cellular respiration doesn't require oxygen?
glycolysis
29
Where does glycolysis occur, what does it require, and what does it produce?
Cytoplasm, requires glucose, ADP and NAD+. breaks down glucose using energy from forming 2 ATP and 2 NADH to make pyruvate
30
Where does Krebs cycle occur, what does it require, and what does it produce?
Mitochondria, requires pyruvate, FAD, ADP, and NAD+. breaks pyruvate carbons, adding H to make 2 CO2, 1 FADH2, 1 ATP and 3 NADH
31
Where does oxidative phosphorylation occur, what does it require, and what does it produce?
Mitochondria, requires NADH, O2, ADP and FADH2. breaks bonds of NADH and FADH2 to get electrons to power protein pumps. H+ concentration builds as more molec are broken, and are pushed thru ATP synthase making ATP and water byrprod.
32
What step in cellular respiration makes the most ATP and how much?
Oxidative Phosphorylation, 34
33
What are the steps of photosynthesis?
Light-dependent reaction and Light-independent reaction (Calvin cycle)
34
Anabolism vs Catabolism
Ana makes, Cata breaks
35
Where does the light-dependent reaction occur, what does it require, do and produce?
thylakoid in chloroplast, requires H20 and sunlight. in PSII, H20 is broken to make H+, e- and O2 byprod. e- powers ETC and H+ proton pump. in PSI, light excites e- and makes NADPH. H+ build up and go thru ATP syn.
36
Where does the light-independent (Calvin Cycle) occur, what does it require, do and produce?
In stroma, requires CO2, NADPH and ATP. all are broke down to make glucose, and energy carriers sent back to light-dependent.
37
What is the main goal of photosynthesis?
To make glucose
38
Asexual vs Sexual reproduction
Asexual = identical daughter cells, only one parents Sexual = two parents, different cells
39
What are the stages of the cell cycle?
Prophase, Metaphase, Anaphase, Telophase
40
Which stage in the cell cycle do spindle fibers grow, and chromosomes condense?
Prophase
41
Which stage in the cell cycle do chromosomes line up in the middle?
Metaphase
42
Which stage in the cell cycle do chromotids get pulled apart to opposite sides?
Anaphase
43
What stage in the cell cycle does the cell reform nuclei, and begin to pinch in the center?
Telophase
44
What stage in the cell cycle is the cell full separated into two daughter cells?
Cytokinesis
45
What are the two sources of genetic diversity in meiosis and when do they happen?
Crossing over in Prophase I and Independent Assortment in Metaphase I
46
What are the major differences between mitosis and meiosis?
mitosis produces 2 genetically identical cells in 4 steps, and is asexual. meiosis produces 4 genetically different cells in 8 steps, and is sexual.
47
Haploid vs Diploid
Haploid cells have chromosomes from only one parent, while diploid cells have chromosomes from both