Download Exam 3 review - Iowa State University

Leader: Shelly
Course: BIOL 101
Supplemental Instruction
Instructor: Dr. Valenzuela
Iowa State University
Date: 3/2/15
1. What does a cell need before it divides? Circle all that are correct.
A. Oxygen
B. Replicate the DNA
C. Energy
D. Sunlight
E. Duplicate the cytoplasm and organelles
2. How is a new hair cell made?
A. Through meiosis
B. DNA replication
C. Through mitosis
D. Hair cells do not replicate, they are irreplaceable
3. What connects two sister chromatids?
A. Centriole
B. Centromere
C. Kinetochore
D. Hydrogen bonds
4. Which is the correct process of mitosis?
A. Telophase, metaphase, interphase, cytokinesis
B. Metaphase, anaphase, telophase, cytokinesis
C. Interphase, prophase, anaphase, cytokinesis
D. Prophase, metaphase, anaphase, telophase
5. Mitosis produces___________________.
A. 4 diploid identical cells
B. 2 haploid identical cells
C. 2 diploid genetically different cells
D. 2 diploid identical cells
6. What is the Pacific yew tree good for? Why? What is happening to the this tree
population?
Exam 3 Review
7. What is the first checkpoint in the interphase cycle?
A. Is there a signal to divide?
B. Have chromosomes replicated properly?
C. Is there DNA damage?
D. Chromosomes aligned for proper chromatid separation?
8. Can a skin cell go through apoptosis? If yes, when?
9. Name three drugs that come from plants.
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10. Which outcome benefited cancer patients the most?
A. Cyclophosphamide + cisplatin
B. Doxorubicin + cyclophosphamide
C. Taxol+ cisplatin
11. Which of the following properties should a promising new ovarian cancer drug have?
A. Blocks mitosis in noncancerous cells
B. Blocks mitosis in cancerous cells
C. Prevents entry into S phase in normal cells
D. Enhances the activity of cell cycle checkpoints in noncancerous cells
12. What chromosome is the BRCA1 gene found on?
A. 17
B. 23
C. 13
D. 15
13. Which of the following, is a germ-line mutation?
A. Skin cancer
B. Smoking
C. Cystic fibrosis
14. Name four carcinogens.
15. What is the function of proto-oncogenes?
A. Signal cells to pause the cell cycle
B. Signal cells to progress through the cell cycle
C. Mutations cause them to be under-expressed or nonfunctional
D. Induce apoptosis
16. What is the difference between a malignant and benign tumor?
A. Benign tumors must be removed through surgery
B. Malignant tumors can have a blood supply spreading them to the rest of the body
C. All benign tumors become malignant tumors
D. It is impossible to get rid of malignant tumors
17. Which of the following family histories most strongly suggests a risk of inherited breast
cancer due to BRCA1 mutations?
A. Many female relatives who were diagnosed with breast cancer in their 70s
B. Many relatives with skin cancer
C. Many relatives diagnosed with skin cancer at an early age
D. Many female relatives diagnosed with breast cancer at an early age
E. Many female relatives with both early breast cancer and ovarian cancer
18. True/ False: All skin cells are haploid.
19. Give an example of homologous and heterozygous chromosomes. Which is dominant or
recessive?
20. Your height is an example of
A. Phenotype
B. Genotype
C. Gametes
D. Not inherited from your parents
21. Complete the chart: Draw pictures of each step.
Prophase
Metaphase
Anaphase
Telophase
22. Which of the following is the correct cycle of fetal development?
A. Embryo, fertilization, zygote, fetus
B. Fertilization, embryo, zygote, fetus
C. Fertilization, zygote, fetus, embryo
D. Fertilization, zygote, embryo, fetus
23. Why do you and your siblings not have identical genes even though you came from the
same parents? There are two reasons we talked about in class.
24. The father has cystic fibrosis, the mother is a carrier. What percentage chance do they
have for having a child with cystic fibrosis?
25. If this couple did not want to take their risk of having a child with cystic fibrosis. What
would you recommend to this couple?
26. True/False: The mother determines the sex of a child.
27. Label the following as recessive or dominant traits.
Chin cleft
Tay sachs
Freckles
Dimples
Cystic fibrosis
Huntington disease
Polydactyly
Sickle-cell
Albinism
28. How do the two alleles of the CFTR gene in a lung cell differ?
A. They were inherited from different proteins
B. One is on chromosome 7 and one is on chromosome 3
C. Only one is expressed
D. All of the above
E. There is no difference because both are the same gene
29. How many alleles are in a liver cell?
A. 36
B. 42
C. 2
D. 1
30. How many alleles are in a gamete?
A. 1
B. 2
C. 42
D. 21
31. What is the genotype of a person with cystic fibrosis?
A. Homozygous dominant
B. Homozygous recessive
C. Heterozygous
D. Any of the above
32. Can cystic fibrosis be diagnosed prenatally? Explain.
33. What hormone do ovaries produce?
A. Testosterone
B. Serotonin
C. Dopamine
D. Estrogen
34. True/False: Father pass their Y chromosome to their daughters.
35. What happens when there is a mutation on the Y chromosome in the SRY gene?
A. The embryo will develop into a female
B. The embryo will have undeveloped gonads
C. The embryo’s brain will not develop fully
D. The embryo will not have any testosterone
36. What is the condition called when people have XX chromosomes and have male
genitals?
A. Congenital medulla hypoplasia
B. Klinefelter syndrome
C. Autosomal malfunction
D. Congenital adrenal hyperplasia
37. What are the characteristics of XXX chromosome?
A. Male
B. Infertile
C. Fertile
D. Shorter than average
38. What are the characteristics of klinefelter syndrome?
A. Ovaries
B. Testes
C. Female
D. XYY
39. What is a pedigree?
40. What is special about a father passing a Y chromosome to their sons?
41. A white flower pollinizes a red flower. What will the resulting flower color be from
incomplete dominance?
A. Red
B. White
C. Red and white spotted
D. Pink
42. A white chicken is bred with a black chicken. What will the offspring be from
codominance?
A. Black
B. Black and white spotted
C. White
D. Grey
43. Which type of blood is the universal donor? Why?
A. AB
B. A
C. B
D. O
44. Describe an example of continuous variation.
45. Health is an example of: Why?
A. Polygenic trait only
B. Multifactorial inheritance only
C. Both
46. If you have A positive blood, who can you safely donate blood to? Who can you receive
blood from?
47. When looking at a karyotype, to diagnose trisomy 21 in a fetus, is it possible to use that
analysis also to tell if the fetus has inherited a cystic fibrosis allele from a carrier
mother?