Chromosome Structure and Numbers Worksheet
Explore the fundamental concepts of chromosome structure, ploidy, and how chromosomes dictate genetic information in Grade 9 Biology.
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Chromosome Structure and Numbers
Name:
Date:
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Read each question carefully and answer to the best of your ability. Refer to the provided diagrams and your knowledge of biology.
1. Which of the following is the primary function of chromosomes?
Energy production
Storage of genetic information
Protein synthesis
Waste removal
2. How many chromosomes are typically found in a normal human diploid cell?
23
46
92
12
3. The tightly coiled structure of DNA and proteins found in the nucleus of eukaryotic cells is called a .
4. A diploid cell contains sets of chromosomes, while a haploid cell contains set.
5. The constricted region on a chromosome that joins sister chromatids is known as the .
6. All organisms have the same number of chromosomes.
True
False
7. Gametes are diploid cells.
True
False
8. Explain the difference between autosomes and sex chromosomes.
9. Describe how DNA is packaged to form a chromosome.
Match the term on the left with its definition on the right.
10. Karyotype
a. The process of cell division that produces two diploid daughter cells.
11. Mitosis
b. A visual representation of an individual's complete set of chromosomes.
12. Haploid
c. Having a single set of unpaired chromosomes.
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