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biology genetics > DNA and RNA structure > Flashcards

DNA and RNA structure Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

genetics

A

the study of heredity and the variation of inherited characteristics

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2
Q

genome

A

is an organisms complete set of DNA including its genes

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3
Q

gene

A

a sequence of nucleotides that codes for the synthesis of a protein

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4
Q

what is the subunit of a nucleic acid called

A

nucleotide

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5
Q

name two purines

A

Adenine and guanine

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6
Q

draw a simple diagram of the structure of DNA showing a triplet

A

in copy

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7
Q

explain what is meant by the base pair unit

A

adenine and thymine cytosine and guanine

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8
Q

what type of bond exists between two complementary bases in a DNA molecule

A

hydrogen bond

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9
Q

state three differences between DNA and RNA

A

DNA RNA
double strand single stranded
deoxyribose sugar ribose sugar
contains thymine uracil

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10
Q

Name a type of specimen that contains only one type of nucleic acid

A

Viruses

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11
Q

Name two locations within the cell in which RNA is found but not DNA

A

Cytosol and ribosomes

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12
Q

2019 11a
name the sugar present in DNA
other than the sugar give two structural differences in DNA and RNA

A

Deoxyribose
DNA RNA
double strand single stranded
contains thymine uracil

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13
Q

2015 7a
what is the chemical composition of a chromosome
what is meant but the term non coding DNA

A

DNA and protein

Non - coding DNA

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14
Q

2012 10a
name the two nitrogenous bases in DNA
give both of the specific base pairs found in DNA structure

A

two purines (adenine and guanine) and two pyrimidines (cytosine and thymine)
adenine thymine
guanine cytosine

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15
Q

how are the two strands of DNA molecules joined together

what is junk DNA

A

HYDROGEN BONDS

non coding DNA

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16
Q

2010 10a

name the base that pairs with cytosine in DNA

A

guanine

17
Q

2008 14 b
draw DNA
Where may vary from nucleotide to nucleotide
The genetic code is contained within the DNA of chromosomes. Briefly describe the nature of this code.
Name a cell organelle, apart from the nucleus, in which DNA is found.

A

Base
three bases in sequence codes for protein
Mitochondrion or chloroplast

biology genetics (1 decks)

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