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, bio final multiple choice
Question 1
1) The text states that ribonucleotides can diffuse through some types of liposomes. It is
likely that the lipids present early in chemical evolution had short chains. Would liposomes
formed from these types of lipids be more or less permeable to ribonucleotides than if early
cells formed from long-chained lipids?
A) same permeability
B) less permeable
C) more permeable
Correct Answer
C
Question 2
2) Through a microscope, you can see a cell plate beginning to develop across the middle of
a cell and nuclei forming on either side of the cell plate. This cell is most likely _____.
A) an animal cell in the process of cytokinesis
B) an animal cell in the S phase of the cell cycle
C) a plant cell in the process of cytokinesis
D) a plant cell in metaphase
E) a bacterial cell dividing
Correct Answer
C
Question 3
3) After telophase I of meiosis, the chromosomal makeup of each daughter cell is _____.
A) haploid, and the chromosomes are each composed of a single chromatid
B) diploid, and the chromosomes are each composed of a single chromatid
C) tetraploid, and the chromosomes are each composed of two chromatids
D) haploid, and the chromosomes are each composed of two chromatids
E) diploid, and the chromosomes are each composed of two chromatids
Correct Answer
D
Question 4
4) Which of the following did Watson and Crick already know when they were trying to
determine the structure of DNA? The number of _____.
A) cytosines is always the same as adenines
B) purines is always larger than the number of pyrimidines
C) purines is always the same as pyrimidines
D) guanines is always the same as thymines
E) pyrimidines is always larger than purines
, Correct Answer
C
Question 5
5) Why did the F1 offspring of Mendel's classic pea cross always look like one of the two
parental varieties?
A) No genes interacted to produce the parental phenotype.
B) One allele was dominant.
C) Each allele affected phenotypic expression.
D) The traits blended together during fertilization.
Correct Answer
B
Question 6
6) Independent assortment of chromosomes occurs during _____.
A) mitosis and meiosis I
B) mitosis and meiosis II
C) meiosis II only
D) meiosis I only
E) mitosis only
Correct Answer
D
Question 7
7) How do cells at the completion of meiosis compare with cells that are in prophase of
meiosis I? They have _____.
A) twice the amount of cytoplasm and half the amount of DNA.
B) half the number of chromosomes and half the amount of DNA.
C) half the amount of cytoplasm and twice the amount of DNA.
D) the same number of chromosomes and half the amount of DNA.
E) half the number of chromosomes and one-fourth the amount of DNA.
Correct Answer
E
Question 8
8) The fastest way for organisms to adapt to a changing environment involves _____.
A) sexual reproduction
B) mutation
C) asexual reproduction
Correct Answer
A