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Biology Flashcards

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Biology 101 flashcards
1
Q

Electrocardiogram (ECG)

A

Detects and provides a picture of the electrical signal of the heart

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2
Q

Ventricles

A

Pump blood to the body and lungs

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3
Q

Systole

A

Muscle Contraction

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4
Q

Diastole

A

When muscle relaxes

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5
Q

Electroencephalogram (EEG)

A

Test that looks at the activity of the brain

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6
Q

Dendrite

A

Receives impulses from another neurone

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7
Q

Axon

A

Impulse travels down the he myelin sheath

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8
Q

Myelin Sheath

A

A fatty cover that increases the speed of transition

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9
Q

Action Potential

A

A signal/impulse that passes down a neurone

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10
Q

Diffusion

A

Transfer of atoms from high to low energy

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11
Q

Depolarisation

A

An electrical change within a neurone from a negative charge to a positive charge

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12
Q

Demyelination

A

Myelin Sheath breaks down leading to smaller impulses and motor neurone disease

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13
Q

Sarcolema

A

Cell membrane of a striated cell

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14
Q

Striation

A

Stripy bonding appliance

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15
Q

Myosin

A

Thick fimame

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16
Q

Myofibril

A

Basic rod shaped organelle of a muscle cell

17
Q

Artery

A

Blood vessel that carries blood away from the heart

18
Q

Prokaryote

A

No nucleus, no organelles, always has a cell wall

19
Q

Eukaryote

A

Has ribosomes, has a membrane, has a nucleus

20
Q

Ribosomes

A

they are not surrounded by a membrane, protein synthesis occurs at the ribosomes

21
Q

Plasmid

A

Small loops of DNA, Plasmids carry genes that may benefit the survival of the organism

22
Q

Nucleoid

A

Where genetic information can be found, and it controls cellular activity

23
Q

Gram positive

A

Purple stain

24
Q

Gram Negative

A

Pink stain, thinner cell walls and plasma membrane

25
Q

Examples of Gram Negative

A

Typhoid, Meningitis

26
Q

Examples of gram positive

A

Pneumonia, Sore throat

Applied science (3 decks)

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