Download Exam Review for Test 4 - Iowa State University

Leader: Julie
Course: Bio 211 (2)
Instructor: Dr. Biederman
Supplemental Instruction
Date:
Iowa State University
1) Which of the following is a shared characteristic of all chordates
a) Scales
b) Jaws
c) Vertebrae
d) Dorsal hollow nerve chord
e) A four chambered heart
2) Lamprey differ from hagfishes in that they
a) Lack jaws
b) Have a cranium
c) Have pharyngeal slits
d) Have a notochord
e) Have a vertebral column
3) According to one hypothesis, the jaws of vertebrates are derived from the
a) Scales
b) Skeletal rods that supported the pharyngeal slits
c) Vertebrae
d) The cranium
4) Why is the amniotic egg considered such an important evolutionary breakthrough?
a) Without amniotic eggs there would be no Denny’s
b) The shell allows incubation of eggs in a terrestrial environment
c) It prolongs embryonic development
d) It permits internal fertilization to be replaced by external fertilization
5) The terms: egg-laying, pouched, and placental refer to which group?
a) The amphibians
b) Birds
c) Marsupials
d) Mammals
e) Reptiles
6) Chordates that have a head are called ____________.
a) Rotifers
b) Craniates
c) Arachnids
d) Echinoderms
7) What is the major reason why vertebrates were able to successfully colonize dry, terrestrial
environments?
a) Cell membranes
b) Amniotic eggs
c) Appendages
d) Eyes
8) The sexual life cycle alternates between fertilization and what?
a) Mitosis
b) Meiosis
c) Zygote
d) Somatic cell
Exam 4:
Practice Exam
1060 Hixson-Lied Student Success Center  515-294-6624  [email protected]  http://www.si.iastate.edu
9) When are homologues separated?
a) Meiosis I
b) Meiosis II
c) Meiosis III
d) Meiosis IV
10) Meiosis II does NOT include which of the following?
a) Anaphase
b) Metaphase
c) Interphase
d) Telophase
11) What term refers to all chromosomes other than the sex chromosomes?
a) Gametes
b) Body cell
c) Barr body
d) Autosome
12) When are sister chromatids separated?
a) Meiosis I
b) Meiosis II
c) Meiosis III
d) Meiosis IV
13) How many pairs of autosomes are in a human muscle cell?
a) 23
b) 22
c) 44
d) 46
14) What even produces recombinant chromosomes?
a) Formation of a tetrad
b) Independent assortment of chromosomes
c) Crossing over
d) Random fertilization
15) The apparatus of microtubules originate from what structure?
a) Centromere
b) Nucleus membrane
c) Centrosome
d) Polar astrals
16) Meiosis results in the formation of how many daughter cells?
a) 2
b) 3
c) 4
d) 8
17) All mouse cells are diploid
a) True
b) False
18) How many autosomes are in a human brain cell?
a) 22
b) 44
c) 46
d) 88
19) Which sex determines the gender of the offspring?
a) Male
b) Female
20) What phase of the cell cycles do sister chromatids form?
a) G1
b) G2
c) S
d) Prophase
21) Most animal species are
a) Diploid dominant
b) Haploid dominant
c) Alternate between generations
d) Triploid dominant
22) In Meiosis how many cell divisions are there?
a) 1
b) 2
c) 3
d) 4
23) The function of mitosis in animal cells is to produce
a) Two daughter cells that are genetically identical to the parent cell
b) Four daughter cells that are not genetically identical to the parent cell
c) Two nonidentical daughter cells that only have one set of chromosomes
d) Four daughter cells that have the same number of chromatids as the parent cell had
chromosomes
24) A mammalian cell entering the M phase of the cell cycle contains 48 chromosomes. How
many chromatids does it contain?
a) 24
b) 48
c) 96
d) 144
25) A chromatid is a(n)
a) Replicated chromosome
b) Chromosome in the G1 phase of the cell cycle
c) Chromosome found outside of the cell nucleus
d) Attachment point for a kinetochore microtubule
26) Which of the following does not contribute to genetic variation in sexually reproducing
organisms?
a) Synapsis
b) Crossing over
c) Random fertilization
d) Independent assortment
27) If there are 40 chromatids in a cell, how many centromeres are there?
a) 10
b) 20
c) 40
d) 80
28) The process of meiosis consists of ______ consecutive cell divisions that result in the
production of _____ daughter cells
a) 2 . . . 2
b) 2 . . . 4
c) 4 . . . 2
d) 4 . . . 4
29) A mammalian skin cell containing 84 chromatids at the metaphase stage of mitosis will
produce _______ nuclei that each contain ________ chromosomes at the completion of the
cell cycle.
a) 2 . . . 84
b) 2 . . . 42
c) 4 . . . 84
d) 4 . . . 42
30) During which stage of mitosis is DNA replicated
a) Prophase
b) Metaphase
c) Telophase
d) None of the above
31) Chromosomes first become visible during _____________ of mitosis
a) Interphase
b) Telophase
c) Prophase
d) Metaphase
32) Look at the picture to the right. What phase of mitosis is this?
a) Prophase
b) Prometaphase
c) Metaphase
d) Anaphase
e) Telophase
33) If a species has a 2n number of chromosomes = 16 then which of the
following is true?
a) The species is a diploid with 32 chromosomes per cell
b) A gamete from this species contains 4 chromosomes
c) The species has 16 sets of chromosomes per cell
d) Each cell has 8 homologous pairs
e) None of the above
34) Asexual reproduction results in the production of identical offspring unless which of the
following occurs?
a) Natural selection
b) Cloning
c) Crossing over
d) Environmental change
e) Mutation
35) A human cell containing 22 autosomes and a Y chromosome is a
a) Egg
b) Zygote
c) Sperm
d) A male somatic cell
e) A female somatic cell
36) Which of the following happens at the conclusion of meiosis I?
a) Homologous chromosomes are separated
b) The chromosome number per cell is conserved
c) Sister chromatids are separated
d) Four daughter cells are formed
e) The sperm cell fertilizes the egg
37) Which of the following is not a characteristic of cancer cells?
a) Loss of cell cycle control
b) Transplantability
c) Loss of contact inhibition
d) All are characteristic
38) If 85% of lung cancer cases occur in heavy smokers, can lung cancer still have a genetic
origin?
a) Yes
b) No
39) Cancerous cells and normal cells differ in the amount of
a) Organic molecules
b) genetic damage
c) proteases
d) cytoplasm
40) Which of the following are characteristic of precancerous cells?
a) Large nuclei
b) increased amount of DNA
c) irregular cell shape
d) All of the above
FILL IN THE BLANK
1. The distinct characteristics of chordates include the Notocord, Dorsal hollow nerve cord,
___________________ and _________________ .
2. Vertebrates share all of the same characteristics as listed above as well as other characteristics
(at some point in their developmental stage). This includes a vertebral column that encloses the
nerve cord, an endoskeleton that grows with the animal, pronounced ______________ and a
___________ circulatory system.
3. In deuterostome blastopores, the ____________ forms first.
4. Briefly describe a genome.
5. True or False: All human cells are diploid. ______________
6. True or False: A gamete with a single chromosome set is called a haploid or (n) cell. _______
7. Meiosis I separates _______________ and meiosis II separates ________________.
8. The red ball-like structure in the middle of this drawing is referred to as a
____________.
9. On the same picture, the oval is describing a ________ ______________.
10. The whole structure is called a ________________.