YEAR 10 BIOLOGY

Question 1

What are the building blocks of DNA?

Answer 1

Nucleotides

Question 2

What components make up a nucleotide?

Answer 2

1. Pentose sugar
2. phosphate group
3. nitrogenous base

Question 3

What component of the nucleotide makes up the backbone

Answer 3

1. phosphate group
2. Pentose sugar

Question 4

What are the 4 nitrogenous bases?

Answer 4

A = adenine
T = Thymine
G = Guanine
C = Cytosine

Question 5

What is complementary base pairing?

Answer 5

where each base will only bond with one other specific base

Question 6

What is the complementary base pairing rule?

Answer 6

A - T
C- G

Question 7

What overall shape does DNA have?

Answer 7

Double Helix

Question 8

Where is DNA Located?

Answer 8

The nucleus of a cell

Question 9

What is a gene?

Answer 9

Genes are a segment of DNA that code for a particular protein

Question 10

How is DNA organized?

Answer 10

Genes found on chromosomes

Question 11

How many pairs of chromosomes do humans have?

Answer 11

Humans have 23 pairs of chromosomes

Question 12

How many chromosomes do humans have?

Answer 12

46 chromosomes

Question 13

What does diploid mean?

Answer 13

A paired set of chromosomes

Question 14

What is a somatic cell?

Answer 14

The cells in the body except sex cells

Question 15

What are gametes?

Answer 15

Reproduction or sex cells

Question 16

What does haploid mean?

Answer 16

Possession of one copy of each set of chromosomes

Question 17

What at the sex chromosomes of biological females?

Answer 17

two X chromosomes

Question 18

What at the sex chromosomes of biological males?

Answer 18

One X chromosome, one Y chromosome

Question 19

What is an autosome?

Answer 19

An autosome is any chromosome not including the sex chromosomes

Question 20

How many autosomes do humans have?

Answer 20

44 autosomes chromosomes

Question 21

What is a sex chromosome?

Answer 21

Chromosomes that determine biological sex