7th grade Science Assessment
Rio Unit 11- Discovering Cells
Name _________________________________
Using the diagram below, answer questions 1-3
A
C
B
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
E
D
1. Which letter represents the cytoplasm?
a. A
b. B
c. C
d. E
2. Which organelle controls regulates the movement of materials in and out of the
cell?
a. A
b. B
c. C
d. D
3. Which organelle contains the chromosomes?
a. A
b. C
c. D
d. E
4. How are the following organized from simplest to most complex?
a. cellsorgansorgan systems tissues the organism
b. cellstissuesorgansorgan systemsthe organism
c. the organismorgan systemsorganstissuescells
d. tissuescellsorgansorgan systemsthe organism
5. What is the function of meiosis?
a. To reduce the number of chromosomes by 1/3 to form sex cells
b. To reduce the number of chromosomes by ½ to form sex cells
c. To increase the number of chromosomes by 2 to form body cells
d. To increase the number of chromosomes by 3 to form body cells
6. What happens to the chromosome number during meiosis?
a. It doubles
b. It stays the same
c. It halves
d. It quadruples
7. If body cells of an organism have 10 chromosomes, how many chromosomes
would the sex cells produce during meiosis?
a. 5 chromosomes
b. 10 chromosomes
c. 15 chromosomes
d. 20 chromosomes
8. Why was the invention of the light microscope helpful to scientists?
a. The microscope helped people focus light in a new way
b. The microscope made it possible for people to discover and learn about
cells
c. The microscope allowed scientist to see DNA inside of cells.
d. The microscope helped scientists understand how to use lenses.
9. Why was it important that scientists discovered that all living things are made up
of cells?
a. So that it is safe for people to use plants for food.
b. It gave scientist the ability to understand the processes of living things
c. It allowed scientists to see that plants could photosynthesize
d. It gave scientists the ability to understand how living things breathe.
10. Cell theory, which is a widely accepted explanation of the relationship between
cells and living things. Two parts of cell theory are all living things are composed
of cells; cells are the basic units of structure and living things. What is the third?
a. Cells come from nonliving matter
b. Cells only exists because of microscopes
c. Cells are produced from other cells
d. Cells only exist in plants
11. What are organelles?
a. Small organs inside the human body like the appendix
b. Small structures that exists only in the plant cell
c. Small structures that exists only in the animal cell.
d. Small structures inside a cell that carry out specific functions
12. How many chromosomes does a human sex cell have?
a. 11
b. 23
c. 46
d. 69
13. How do genes relate to chromosomes?
a. Chromosomes are contained on genes
b. Genes are contained on chromosomes
c. Genes and chromosomes do not relate
d. Genes are wrapped around chromosomes.
14. What are chromosomes made of?
a. Proteins and DNA
b. DNA
c. Protein
d. DNA, Protein, and RNA
15. What does DNA stand for?
a. Dynamic Nucleic Acid
b. Double Stranded Nucleic Acid
c. Deoxyribonucleic acid
d. Dioxide nitride acid