Science 10
Summative Tests
Name:______________________________________________________________Score:___________________
I.Multiple Choice
Answer the following questions correctly. Write only the letter of your chosen answer on your answer sheet.
1.
What is DNA replication?
a.
It is the process of making copies of DNA?
b.
It is to the process of converting the information in messenger in RNA into a sequence of
amino acids that make a protein.
c.
It is the process of making copies of RNA.
d. None of the above
2.
It is made up of sugars, phosphate groups and nitrogenous bases and its shape is a double helix.
a.
DNA
b.RNA
c. mRNA
d.tRNA
3.
What is the complementary base of adenine in RNA?
a.
guanine
b.cytosine
c. thymine
d. uracil
4.
What brings the amino acids in the cytoplasm to the ribosomes to make proteins?
a.
DNA
b.mRNA
c. tRNA
d. RNA
5. How do you describe translation?
a.
It is the process of making copies of DNA.
b.
It is to the process of converting the information in messenger in RNA into a sequence of
amino acids that make a protein.
c.
It is the process of making copies of RNA.
d. None of the above
6. What is the complementary base of cytosine in DNA?
a. thymine
b. guanine
c. adenine
d. uracil
7. What nitrogenous base is found in RNA but not in DNA?
a. thymine
b. cytosine
c. adenine
d.uracil
8. What part of the cell DNA is located?
a. nucleus
b. cytoplasm c. mitochondrion
d. plasma
9. How many strand/s is/are in RNA
a. 1
b.2
c.3
d.4
10. What is the sugar found in DNA?
a. deoxyribose
b.ribose
c.pentose
d. lactose
For numbers 11-13 answer the following question:
How should each of the ecosystems below be used to conserve its resources?
11. Coral reef
a. Promote it as an ecotourism destination
b. Collect coral fishes and sell them to pet shops.
c. Collect corals as souvenir items for tourists.
12. Hilly land
a. Convert it into an industrial area
b. Build a community where houses are built among the trees.
c. Turn it into a jogging area
13. Rainforest
a. Cut the trees into logs and make timber.
b. Get only minor forest products.
c. Advertise it as a camping site
14.
15.
16.
.
For no. 17-18, study the graph below.
17.
18
.
19.
20.