Bio quiz #1

Question 1

Genome

Answer 1

The complete DNA sequence in every cell of an organism

Question 2

Chromosomes

Answer 2

Long strands of DNA that carry genetic information (genes)

Question 3

Gene

Answer 3

A segment of a chromosome that contains the code for a single protein that allows a trait to be expressed (ie. hair colour, eye colour, etc.)

Question 4

allele

Answer 4

Two forms of the same
gene

Question 5

Nucleotide

Answer 5

A molecule of DNA is made up of millions of tiny subunits

Question 6

Pentose sugar

Answer 6

5 carbon sugar
DNA has deoxyribose sugar
RNA has ribose sugar

Question 7

Phosphate group

Answer 7

A phosphorus oxygen bond
Important because it links the
sugar from one nucleotide to
the phosphate of the next to
connect many together

Question 8

Nitrogenous Base

Answer 8

There are 4 bases in DNA:
○ Thymine (T)
○ Adenine (A)
○ Cytosine (C)
○ Guanine (G)
There are 4 bases in RNA:
○ Uracil (U)
○ Adenine (A)
○ Cytosine (C)
○ Guanine (G)

Question 9

Genetic mutation

Answer 9

The nucleotides don’t match up properly

Answer 10

There are 4 bases in RNA:
○ Uracil (U)
○ Adenine (A)
○ Cytosine (C)
○ Guanine (G)