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DNA, Chromosomes And Genes
Test Description: Biological Diversity Topic 5 - Science 9 ALBERTA
Instructions: Answer all questions to get your test result.
1) Human have 23 chromosomes
A
False
B
True
2) Which of the following is not true of the structure of DNA?
A
Each nucleotide contains a phosphate, a sugar, and two nitrogen bases.
B
The backbone is made up of alternating sugars and phosphates.
C
The molecule has the shape of a coiled ladder.
D
Nitrogen bases A and T bond together, and bases C and G bond together.
3) If the embryo shown above had four chromosomes in each of its cells, how many different combinations of chromosomes could be found in its gametes?
A
16
B
32
C
2
D
8
4) A gene is
A
the result of meiosis.
B
another name for a chromosome.
C
a section of DNA that codes for a specific protein.
D
a tightly coiled strand of DNA.
5) In the DNA molecule, the nitrogen bases are always found in pairs. The base A pairs with...
A
C
B
G
C
T
D
A
6) A mutation causes a bacterial cell to begin producing a new protein. The mutation probably...
A
will not be passed on to daughter cells when the bacterial cell divides.
B
changed the number of chromosomes in the bacterial cell.
C
changed the sequence of nucleotides within part of the bacterial DNA.
D
led to a new combination of chromosomes in the bacterial cell.
7) The DNA that directs all cell activities is contained in the cells _____________
A
nucleus
B
cell membrane
C
cytoplasm
D
vacuole
8) Another name for a body cell is a
A
gamete
B
somatic cell
9) One of the first uses of modern biotechnology was
A
the cloning of a mammal.
B
the insertion of a human insulin gene into bacteria.
C
the insertion of a bacterial insulin gene into human cells.
D
the insertion of an antifreeze gene into a fish.
10) Which of the following is not a feature of DNA?
A
It codes for specific chromosomes in the cell.
B
It can reproduce itself.
C
It is stored in the cell nucleus.
D
It can be passed from parent to offspring.
*select an answer for all questions
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