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sciance > DNA > Flashcards

DNA Flashcards

1
Q

How much DNA is in one cell?

A

About 2 meters

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2
Q

DNA has a structure called a _______ it resembles a ladder that has been twisted.

A

Double Helix

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3
Q

___________ are famous for finding out the double helix structure

A

James Watson and Francis Crick

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4
Q

Rosalind franklin used the _______ to take the first pictures of DNA

A

x ray diffraction

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5
Q

The sides of the ladder are made of a substance called_______

A

sugar phosphates

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6
Q

The rungs of the ladder are made of _______

A

nitrogen bases

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7
Q

The combination of one nitrogen base and one sugar phosphate is called a _________

A

nucleotide

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8
Q

There are ________ on each side of the DNA that fit together like a puzzle.

A

nucleotides

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9
Q

a=

A

t

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10
Q

g=

A

c

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11
Q

what are chargaffs rules?

A

A=T

G=C

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12
Q

A section of DNA that controls the trait is called a ____

A

Gene

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13
Q

CGAT are lined up in specific ways to control _______

A

traits

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14
Q

When a ribosome reads DNA how many bases can it read at one ?

A

three

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15
Q

what are amino acids strung together to form?

A

proteins

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16
Q

there are _______ amino acids therefore ______ different proteins

A

thousands

17
Q

what are the mistakes made when DNA copys itself called?

A

Mutations

18
Q

mutation where a base is left out.

A

Deletion

19
Q

mutaion where a base is added to DNA strand where it doesnt belong.

A

insertion

20
Q

mutaion where a base has been changed from on letter to another

A

substitution

21
Q

one cell forms two cells that are idendical used when an organisim needs to make more body cells

A

mitosis

22
Q

one cell forms four new cells called sex cells each new sex cell has half the DNA of the orugional cell used for reproduction

A

meiosis

sciance (3 decks)

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