Human genome (Question & Answers)
Human genome (Question & Answers)
1. The
human genome is:
a) All of our genes
b) All of our DNA
c) All of the DNA and RNA
in our cells
d) Responsible for all
our physical characteristics
Answer: B All of our DNA
.
2. How
many chromosomes do humans have?
a) 46
b) 48
c) 54
d) 56
Answer: A 46
3. DNA
and RNA are made up of four chemical bases joined to a sugar and phosphate,
called nucleotides, that match up with each other. In DNA, the adenine base
forms special bonds to make a base pair with:
a) Guanine
b) Cytosine
c) Thymine
d) Uracil
Answer: C Thymine
4. Genes
are made up of:
a) DNA
b) RNA
c) Proteins
d) Enzymes
Answer: A DNA
5. Scientists
now think humans have how many protein-encoding genes:
a) 20 - 25,000
b) 30 - 40,000
c) 65 - 75,000
d) More than 100,000
Answer: A 20 - 25,000
6. When
a gene is 'expressed' it is:
a) Transported around the body to make proteins
b) Used as a blueprint to
assemble the protein it codes for
c) Passed on from parents to children
d) Replicated within the
cell
Answer: B Used as a blueprint to assemble the protein it codes
for.
7. Genes
for which of the following are coded on the Y chromosome:
a) Haemophilia
b) Testosterone
c) Male pattern baldness
d) Testis development
Answer: D Testis development
8. Gene
mutations happen:
a) Twice as often in egg cells than sperm cells b) Twice as
often in sperm cells than egg cells c) At the same rate in both types of cells
d) The sex germ cells are not related to mutation
Answer: B Twice as often in sperm cells than egg cells
9. Which
of the following is controlled by a single gene?
a) Height
b) Mathematical ability
c) Breast cancer
d) Cystic fibrosis
Answer: D Cystic fibrosis
10. Trisomy
21 is better known as:
a) Edwards syndrome
b) Patua syndrome
c) Down syndrome
d) Warkany syndrome 2
Answer: C Down syndrome
ليست هناك تعليقات