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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
Nitrogen bases A and T bond together, and bases C and G bond together.
B
Each nucleotide contains a phosphate, a sugar, and two nitrogen bases.
C
The molecule has the shape of a coiled ladder.
D
The backbone is made up of alternating sugars and phosphates.
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
8
B
2
C
32
D
16
4) A gene is
A
another name for a chromosome.
B
a section of DNA that codes for a specific protein.
C
a tightly coiled strand of DNA.
D
the result of meiosis.
5) In the DNA molecule, the nitrogen bases are always found in pairs. The base A pairs with...
A
A
B
C
C
T
D
G
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
led to a new combination of chromosomes in the bacterial cell.
D
changed the sequence of nucleotides within part of the bacterial DNA.
7) The DNA that directs all cell activities is contained in the cells _____________
A
cytoplasm
B
nucleus
C
cell membrane
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 an antifreeze gene into a fish.
C
the insertion of a human insulin gene into bacteria.
D
the insertion of a bacterial insulin gene into human cells.
10) Which of the following is not a feature of DNA?
A
It can reproduce itself.
B
It codes for specific chromosomes in the cell.
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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