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Science 10 > Biology > Flashcards

Biology Flashcards

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Biology 101 flashcards
1
Q

Prokaryotic

A
  • no nucleus, DNA floats in the cytoplasm ex. bacteria
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2
Q

Eukaryotic

A
  • membrane bound nucleus

- DNA is in the nucleus (chromosomes) ex. plant and animal cells

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3
Q

5 main cell structures

A
  • cell wall, cell membrane, nucleus, cytoplasm, organelles
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4
Q

cell wall

A

protection and support (made of cellulose)

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5
Q

cell membrane

A 
protective barrier (semi-permeable) made of fats
- controls what passes into and out of the cell
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6
Q

Proteins

A

Float in the lipid layer and can be receptors or channels or pumps

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7
Q

nucleus

A

contains genetic material (DNA), directs cellular activities, selective transport of materials

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8
Q

cytoplasm

A

contains nutrients needed for cellular activities, has organelles suspended in it

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9
Q

mitochondria

A

powerhouse of the cell, site of cellular respiration

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10
Q

endoplasmic reticulum ER

A

tubes from nuclear envelope - transport proteins

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11
Q

Rough ER

A

contains ribosomes

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12
Q

Smooth ER

A

Fat/oil production

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13
Q

ribosomes

A

site of protein synthesis

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14
Q

Golgi apparatus

A

receives substances from ER and packages them for transport out of cell (modifies molecules and preps them)

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15
Q

Lysosomes

A

digest foreign bacteria or damaged proteins - contain enzymes (suicide sac)

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16
Q

Vacuoles

A

storage for food water and wastes

17
Q

Vesicles

A

transport substances through cell

18
Q

Chloroplasts

A

only in plant cells – contains a green pigment called chlorophyll (site of photosynthesis)

19
Q

water makes up __% of the cell

A

85%

20
Q

Higher magnification =

A

lower field of view

21
Q

only use fine adjustment w

A

high power

22
Q

Who first invented the nucleus

A

Robert Brown in 1831

23
Q

cytoskeleton

A

supports

24
Q

centrioles

A

help with cell division

25
Q

cilia

A

help transport fluid or materials

26
Q

condenser is above/below the iris diaphragm

A

above

Science 10 (7 decks)

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