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Fall 2019 Semester Exam Biology

Fall 2019 Semester Exam
Biology- Ms. Jones
Answer the following questions using multiple choice.
1. The genetic code that complements ATTGCG is ________.
2. What is the name of the structure of DNA coined by scientists Watson and Crick?
a. A pentagon
b. A square
c. A double helix
d. A long string
3. Chargaff discovered that the amount of adenine equaled the amount of _________ in DNA.
a. thymine
b. guanine
c. cytosine
d. gasoline
4. The diagram shows the cell cycle. The label "interphase" has been omitted from this model.
Which best describes how the term "interphase" could be correctly added?
a. Add the term with an arrow pointing only to the S stage.
b. Add the term with arrows pointing to both mitosis and cytokinesis.
c. Add the term with arrows pointing to both the G1 and G2 stages.
d. Add the term with arrows pointing to the G1, S, and G2 stages
5. What are the components of a nucleotide?
a. Deoxyribose(sugar)
b. A nitrogenous base
c. Phosphate
d. All of the above
Use the diagram to answer questions 6 and 7.
6. The structure labeled A is called the
a. centromere.
b. centriole.
c. sister chromatid.
d. Spindle.
7. The structures labeled B are called
a. centromeres.
b. centrioles.
c. sister chromatids.
d. spindles.
Use the image below for questions 8-11
8. Refer to the illustration above. The cell in diagram 1 is in
a. metaphase.
c. anaphase.
b. telophase.
d. prophase.
9. Refer to the illustration above. Metaphase is shown in diagram
a. 1
c. 3
b. 2
d. 4
10. Refer to the illustration above. The cell shown in diagram 5 is in
a. metaphase.
c. anaphase.
b. telophase.
d. prophase.
11. What process occurs after telophase and could be considered diagram 6?
a. G2
c. cytokinesis
b. S Phase
d. M Phase
12. Animal cells contain all of the following EXCEPT a
a. Nucleus
b. Cell wall
c. Mitochondria
d. Cell membrane
13. The main difference between a prokaryotic cell and a eukaryotic cell is
The ability to grow
The ability to reproduce
The presence of a cell membrane
The presence of a nucleus
14. In eukaryotes, DNA
a. is located in the nucleus.
b. floats freely in the cytoplasm.
c. is located in the ribosomes.
d. is circular.
15. What two organelles are in a plant cell but not found in an animal cell?
a. Cytoplasm and cell wall
b. Membrane and chloroplasts
c. Cell wall and chloroplasts
d. Cytoplasm and chloroplasts
16. Which statement describes ALL living things?
a. They must reproduce sexually
b. They are made of one or more cells
c. They are capable of making their own food
d. They have organ systems to carry out the processes of life
17. How many daughter cells are produced from meiosis?
a. 2 Diploid cells
c. 4 Haploid cells
b. 1 Diploid cell
d. 8 Haploid cells
18. The female sex cell is called a(n)
a. Zygote
b. Egg
c. Sperm
d. Fertilization
19. The male sex cell is called a(n)
a. Sperm
b. Egg
c. Zygote
d. Oocyte
20. Choose ONE of the three choices listed below to write a short essay. Please indicate which essay you
are writing. Use complete sentences and proper grammar and punctuation.
1. Identify and describe the events occurring at each phase of mitosis.
2. Describe the discoveries that led to the modeling of DNA.
3. Identify 2 differences and 2 similarities between prokaryotic and eukaryotic cells