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Biology > B1 > Flashcards

B1 Flashcards

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1
Q

Plant and animal cells are both what type of cell ?

A

Eukaryotes

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2
Q

What type of cell is a bacteria cell

A

Prokaryotes

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3
Q

Which organelle is the site of aerobic respiration

A

Mitochondria

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4
Q

What does a ribosome produce/synthesise

A

Protein

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5
Q

Which organelle controls the movement of substances in and out of the cell

A

Cell membrane

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6
Q

What 3 organelles can you find in a plant cell but not in an animal cell

A

Cell wall, chloroplasts, vacuole

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7
Q

Where is the genetic material found in an animal cell

A

Nucleus

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8
Q

What are the circular rings of DNA called in bacteria

A

Plasmids

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9
Q

How many chromosomes are there in a human body cell

A

46

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10
Q

How many chromosomes are there in a human sex cell (gamete)

A

23

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11
Q

What are the two advantages of an electron microscope over a light microscope

A

Higher magnification higher resolution

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12
Q

What happens to chromosomes before mitosis

A

They duplicate

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13
Q

What is a stem cell

A

An undifferentiated cell

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14
Q

What diseases can stem cells be used to treat

A

Diabetes, paralysis, stroke, heart disease

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15
Q

Name the part of a plant used for stem cells

A

Meristem

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16
Q

How are root hair cells specialised

A

They have a larger surface area

17
Q

What transport is the net movement of particles from a high concentration to a low concentration

A

Diffusion

18
Q

What three things affect the rate of diffusion

A

Temperature, concentration gradient and surface area

19
Q

Osmosis

A

The movement of water from a less concentrated solution to a more concentrated one through a semipermeable membrane

20
Q

Active transport

A

The movement of molecules across the membrane from a low concentration to higher concentration using energy from respiration

Biology (7 decks)

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