A1.2 Nucleic Acids

Question 1

DNA Components

Answer 1

Composed of 2 interlocking strands, ACGT, and deoxyribose

Question 2

Nucleotide Components

Answer 2

Phosphate group, pentose sugar, and a nitrogenous base (ACGT)

Question 3

RNA Components

Answer 3

Composed of 1 strand, ACGU, and ribose

Question 4

Purines

Answer 4

Double ring structures: Adenine and Guanine

Question 5

Pyrimidine

Answer 5

Single ring structures: Cytosine and Thymine

Question 6

Nucleosome structure

Answer 6

8 histone proteins at core, DNA molecule wrapped around, H1 reinforces binding

Question 7

Gene

Answer 7

A sequence of DNA that influences a specific characteristic, occupying a specific position (locus) on a chromosome.

Question 8

DNA function

Answer 8

Passes hereditary information between generations, codes for making RNA during trancription

Question 9

RNA function

Answer 9

Codes for making proteins during translation

Question 10

DNA location in Prokaryotes

Answer 10

located in the nucleoid (no membrane region of cell) or the plasmid

Question 11

RNA location in Prokaryotes

Answer 11

located in the cytoplasm