1.2 - Structure And Replication Of DNA Flashcards Preview

Higher Human Biology > 1.2 - Structure And Replication Of DNA > Flashcards

Flashcards in 1.2 - Structure And Replication Of DNA Deck (21)
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1
Q

Strand of nucleic acid running from a sugar to a phosphate.

A

3’-5’

2
Q

DNA base that pairs with thymine.

A

Adenine (A)

3
Q

Parallel strands in DNA that run in opposite directions in terms of chemical polarity.

A

Antiparallel

4
Q

Nitrogenous substance that is a component of DNA nucleotides.

A

Base

5
Q

DNA base that pairs with guanine.

A

Cytosine (C)

6
Q

Pentose sugar that is a component of DNA nucleotides.

A

Deoxyribose

7
Q

Deoxyribonucleic acid; molecule that holds the genetic code in living organisms.

A

DNA

8
Q

Enzyme that unwinds and unzips DNA; adds free nucleotides during DNA replication.

A

DNA polymerase

9
Q

The three-dimensional shape of a DNA molecule.

A

Double helix

10
Q

DNA base that pairs with cytosine.

A

Guanine (G)

11
Q

Weak chemical link joining complementary base pairs in DNA.

A

Hydrogen bond

12
Q

DNA strand that is replicated in fragments.

A

Lagging strand

13
Q

DNA strand that is replicated continuously.

A

Lead strand

14
Q

Enzyme that joins DNA fragments.

A

Ligase

15
Q

Component of DNA consisting of a deoxyribose sugar, a phosphate group and a base.

A

Nucleotide

16
Q

Component of DNA nucleotide.

A

Phosphate

17
Q

Short complementary strand of DNA.

A

Primer

18
Q

Formation of copies of DNA molecules.

A

Replication

19
Q

Strongly bonded strand of DNA.

A

Sugar-phosphate backbone

20
Q

DNA strand on which a complementary copy is made.

A

Template strand

21
Q

DNA base that pairs with adenine.

A

Thymine (T)