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Science > DNA > Flashcards

DNA Flashcards

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Biology 101 flashcards
1
Q

What is A?

A

Adenine

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2
Q

What is G?

A

Guanine

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3
Q

What is C?

A

Cytosine

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4
Q

What is T?

A

Thymine

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5
Q

What group are Adenine and Guanine part of?

A

Purines

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6
Q

How many rings are the purines?

A

Double Ringed

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7
Q

What group are Cytosine and Thymine in?

A

Pyrimidines

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8
Q

How many rings are the Pyrimidines

A

Single Ringed

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9
Q

In DNA, what does C go to?

A

G

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10
Q

In DNA, what does T go to ?

A

A

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11
Q

In DNA, what does G go to?

A

c

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12
Q

In DNA, what does A go to?

A

T

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13
Q

In RNA, what does A go to?

A

U

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14
Q

In RNA, what does U go to?

A

A

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15
Q

What is a DNA?

A

A deoxyribose sugar
A phosphate group
Nitrogen base containing AGCT
Double helixed

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16
Q

What are AGCT?

A

Nitrogenous bases

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17
Q

What is RNA?

A 
Ribose sugar
Phosphate group
Nitrogenous base containing AGCU
Single stranded
3 types
18
Q

What are the three types of RNA?

A

mRNA
tRNA
rRNA

19
Q

What is mRNA?

A

Messenger RNA

20
Q

What is tRNA?

A

Transfer RNA

21
Q

What is rRNA?

A

Ribosomal RNA

22
Q

What is the first step of transcription?

A

RNA polymerase binds to DNA promoter site

23
Q

What is the second step of transcription?

A

Add complementary RNA nucleotides (U–A)

24
Q

What is the third step of transcription?

A

DNA termination sequence signals gene end

25
Q

What is the fourth step of transcription?

A

RNA polymerase releases DNA and RNA

26
Q

What is a polypeptide?

A

A sequence of amino acids

27
Q

What is the start codon?

A

AUG

28
Q

What is a codon?

A

3 mRNA nucleotides code

29
Q

What does the START codon do?

A

starts translation

30
Q

What is the START codon?

A

AUG

31
Q

What does the STOP codon do?

A

stops translation

32
Q

How many STOP codons are there?

A

3

33
Q

What are the three STOP codons?

A

UAA, UAG, UGA

34
Q

What does the tRNA do?

A

Binds specific amino acids

35
Q

T or F, is tRNA an anticodon?

A

True

36
Q

What is Sickle Cell Anemia?

A

Where As are Ts

37
Q

What is nondisjunction?

A

Gametes have 1 more or less chromosome

38
Q

What is monosomy?

A

45 chromosomes

39
Q

What is Turner’s syndrome?

A

XO

40
Q

What is trisomony?

A

47 chromosomes

41
Q

What is a tumor?

A

Uncontrolled cell division

42
Q

What is metastasis?

A

when cancer cell breaks off and spreads

Science (23 decks)

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