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Biology > Enzymes & DNA > Flashcards

Enzymes & DNA Flashcards

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1
Q

Whee is DNA stored in the cell ?

A

Nucleus

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2
Q

Which bases pair with which ?

A

T with A (Tree and Apple)

C with G (Car and Garage)

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3
Q

What chemical elements are in protein ?

A

Carbon
Oxygen
Hydrogen

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4
Q

What is triglyceride made of

A

Glycerol

3 fatty acids (remember „tri”)

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5
Q

What are the bases in DNA ?

A

Adenine
Thymine
Cystosine
Guanine

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6
Q

Where does substrate bind onto an enzyme ?

A

Active site

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7
Q

Name 3 polysaccharides (polymers of glucose)

A

Starch
Glycogen
Cellulose

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8
Q

Chemical used to test for glucose (and colour change) ?

A

Benedicts - blue to red

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9
Q

Chemical test for starch (and colour change) ?

A

Iodine - yellow to black

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10
Q

3 functions of lipids ?

A

Store energy
Buoyancy
Insulation

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11
Q

What is an organisms genome ?

A

Total DNA in an organism

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12
Q

Chemical test for lipid (and colour change) ?

A

Ethanol- clear to white

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13
Q

What is a chromosome

A

Holds DNA

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14
Q

Chemical elements in lipids ?

A

Carbon
Hydrogen
Oxygen
Nitrogen

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15
Q

Chemical test for protein (and colour change) ?

A

Biuret- Blue to purple

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16
Q

3 functions of proteins

A

Growth
Repair
Transport haemoglobin)

17
Q

Chemical elements in carbohydrates

A

Carbon
Oxygen
Hydrogen

18
Q

Which food test do you need to heat in a water bath

A

Benefits test - testing for glucose

19
Q

Why does an enzyme reaction slow down when heated above its optimum temperature ?

A

Enzyme shape changes = substrate cannot fit = enzyme denatures

20
Q

What is glucose used for ?

A

Respiration

21
Q

Why does an enzyme reaction speed up when heated (to optimum temperature ?)

A

More kinetic energy = more collisions between substrate and enzyme = faster reaction

Biology (9 decks)

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