AnswersCO-Biology A-CRCumulative Exam

Cumulative Exam — Cumulative exam Answers

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Suzanne has type A– blood. Which blood type could she receive in a blood transfusion?

A
A+
B
O–
C
O+
D
B–
2
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If a scientist wanted to follow Mendel’s experiment with a different kind of plant, which type of plant would she examine?

A
A plant that cannot self-pollinate.
B
A plant that has only recessive alleles.
C
A plant that has three alleles for a trait.
D
A plant that has only two alleles for a trait.
3

Which best describes the relationship between DNA, genes, and chromosomes?

A
DNA are segments of genes; the genes form tight coils called chromosomes.
B
Genes are segments of DNA; the DNA forms tight coils called chromosomes.
C
Chromosomes are segments of DNA; the DNA forms tight coils called genes.
D
Genes are segments of chromosomes; the chromosomes form tight coils called DNA.
4

Which organisms are prokaryotes?

A
archaea
B
fungi
C
protists
D
plants
5

What observation led researchers to propose that chloroplasts evolved from cyanobacteria?

A
Both produce proteins.
B
Both contain mitochondria.
C
Both provide structure to cells.
D
Both perform photosynthesis.
6

Which statement describes the F1 generation of a Mendelian monohybrid cross between two true-breeding parents?

A
Only the dominant trait is visible in the F1 generation.
B
Only the recessive trait is visible in the F1 generation.
C
Neither the dominant nor recessive trait is visible in the F1 generation.
D
Both the dominant and recessive traits are visible in the F1 generation.
7

Kai looks at a photo of herself with her parents. She notices that, while her features are similar to her parents’ features, they do not appear to be identical. Which explains why this is the case?

A
Their DNA is made of different codon sequences.
B
Their DNA is made of four different bases.
C
Kai inherited more proteins from one parent than the other.
D
Kai inherited different amino acids from either of her parents.
8

Which inheritance pattern results when parents with pure traits are crossed and the resulting offspring have traits that appear to be a blend of the parents' traits?

A
incomplete dominance
B
codominance
C
Mendelian inheritance
D
polygenic inheritance
9

Who is credited with creating the first accurate model of DNA?

A
Rosalind Franklin
B
Friedrich Miescher
C
James Watson and Francis Crick
D
Marshall Nirenberg and Heinrich Matthaei
10

Which statement best describes human eye color?

A
an incompletely dominant trait that follows non-Mendelian inheritance patterns
B
a polygenic trait that follows non-Mendelian inheritance patterns
C
an incompletely dominant trait that follows Mendelian inheritance patterns
D
a polygenic trait that follows Mendelian inheritance patterns
11

Organisms inherit specific traits and characteristics from their parents. Albinism is an inherited disorder that occurs when an organism is unable to produce or distribute melanin. Melanin is a substance in the body that helps determine skin color, hair color, and eye color.Which is the basic unit of heredity that carries the trait of albinism from parent to offspring?

Question illustration
A
base pairs
B
genes
C
proteins
D
codons
12

The graph demonstrates the quantitative variation for skin pigmentation.Which conclusion is supported by the graph?

Question illustration
A
More than half of the population has the central skin pigmentation.
B
The lightest and the darkest skin pigmentations are equally common in the population.
C
The central skin pigmentation makes up more of the population than the rest of the skin pigmentation groups combined.
D
Fewer people have skin pigmentation lighter than the central peak than people who have pigmentation darker than the central peak.
13

What alternate form of genes do nucleic acids have that allows them to offer variability?

A
allele
B
codon
C
nucleotide
D
chromosome
14

Which are segments of DNA that code for specific traits?

A
genes
B
chromosomes
C
proteins
D
codons
15

In pea plants, tall plant height is dominant over short plant height. If there are 200 short plants in the F2 generation from a cross that followed Mendel’s methods, about how many plants will be tall in that generation?

A
200
B
300
C
600
D
1,000
16

Rosalind Franklin is famous for which contribution to the study of DNA?

A
creation of an accurate model of DNA structure
B
creation of an X-ray diffraction image of DNA structure
C
identification of a pattern in ratios of DNA bases
D
identification of DNA in bandages that contained pus
17

What is one benefit of mapping the human genome?

A
locating the chromosomal abnormalities that cause disease
B
having the genomes of every living individual on file
C
choosing the gender or intellectual ability of an unborn child
D
cloning the individuals that comprise a nearly extinct tribe
18

What is a gene?

A
a section of a protein that codes for DNA
B
the alternate version of a trait
C
the visible trait in the F1 generation
D
a section of DNA that codes for a specific trait
19

Which statement is most likely to apply to a cell that has DNA within its cytoplasm?

A
It lacks ribosomes.
B
It has membrane-bound organelles.
C
It is multicellular.
D
It performs all functions for the organism.
20

Which best describes mitochondrial DNA (mtDNA)?

A
Mitochondrial DNA is the same as nuclear DNA.
B
Mitochondrial DNA is inherited through the father.
C
Mitochondrial DNA can be traced for generations.
D
Mitochondrial DNA requires large amounts for testing.

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