AnswersEAP-Biology B CRThe Digestive System

The Digestive System — Cumulative exam Answers

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A Labrador retriever breeder needs to determine if three male pups who were born to Sadie, his black Labrador retriever, are the offspring of Sam, a yellow Labrador retriever from another breeder. Which process could the breeder use to determine if Sam is the father of the pups?

A
PCR analysis
B
STR analysis
C
mtDNA analysis
D
Y-chromosome analysis
2
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Which specific process helps the respiratory system get rid of excess water and heat?

A
diffusion
B
inhalation
C
exhalation
D
evaporation
3

How does the structure of the small intestine help it to perform its function?

A
Compartments in the small intestine hold bile from the liver to make the absorption of nutrients more efficient.
B
Involuntary muscles of the small intestine contract to make the absorption of nutrients more efficient.
C
Glands in the small intestine hold saliva to make the absorption of nutrients more efficient.
D
Villi in the small intestine have thin-walled capillaries to make the absorption of nutrients more efficient.
4

Review the image below.What is the function of this type of human tissue?

Question illustration
A
binding organs and tissues together
B
control and coordination
C
movement
D
protection
5

What do goblet cells and cilia have in common?

A
Both moisten the air.
B
Both filter the air.
C
Both secrete mucus.
D
Both diffuse oxygen.
6

Which best describes the tongue, ears, and nose?

A
sense organs that are part of the central nervous system
B
sense organs that are part of the peripheral nervous system
C
internal organs that are part of the central nervous system
D
internal organs that are part of the peripheral nervous system
7

A weakened immune system may be caused by

A
an overproduction of lysozymes.
B
muscle disorders.
C
immunodeficiency disorders.
D
complement systems in the blood.
8

Which autonomic system conserves energy by returning the body to a normal activity level through a lowered heart rate and blood pressure?

A
peripheral nervous system
B
sympathetic nervous system
C
somatic nervous system
D
parasympathetic nervous system
9

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.
10

The lava released by a volcanic eruption separates two populations of a species of monkey. What does this represent?

A
biological isolation
B
geographical isolation
C
temporal isolation
D
anatomical isolation
11

Which virus is correctly matched with its structure?

A
HIV—helical shape
B
polio—polyhedral shape
C
Ebola—complex shape
D
bacteriophage—enveloped shape
12

Which best describes lymph?

A
Lymph is a clear liquid that flows in arteries.
B
Lymph helps protect the body from pathogens.
C
Lymph contains only protein and white blood cells.
D
Lymph allows for the transport of oxygen throughout the body.
13

Sophie says dolphins and sharks look very similar, so they must be related. Jake disagrees, saying DNA evidence has shown that dolphins and other aquatic mammals are actually more closely related to the ancestors of modern hippos. Who is correct using the modern system of classification?

A
Sophie is correct because dolphins look more like sharks than like hippos.
B
Jake is correct because classification is based on evolutionary relationships.
C
Both are correct because traditional and modern classifications can overlap.
D
Neither is correct because neither is taking into account both the traditional and modern systems
14

Which is a requirement for natural selection to occur?

A
heritable variations for some traits
B
the ability of an organism to improve a trait during its lifetime
C
equal probability of survival for all offspring
D
fewer offspring than the environment can support
15

Which enzymes are secreted only by the pancreas?

A
nucleases
B
amylase and proteases
C
lipases
D
amylase, proteases, lipases, nucleases
16

While walking to the kitchen in the middle of the night, Jamal tripped over an object that he could not see in the dark. Which part of the CNS sent a signal to help prevent Jamal from falling?

A
cerebrum
B
hippocampus
C
cerebellum
D
brain stem
17

Which best describes the exocrine glands?

A
Exocrine glands function only for digestion and temperature regulation.
B
Exocrine glands can sometimes release substances out of the body.
C
Exocrine glands secrete substances into the bloodstream.
D
Exocrine glands are only found in the skin and mouth.
18

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

A
A+
B
O–
C
O+
D
B–
19

Unattached earlobes is a dominant trait, E. A parent who is homozygous for unattached earlobes is crossed with a parent who is homozygous for attached earlobes. Which describes the genotypes of their offspring?

A
100 percent Ee
B
100 percent unattached earlobes
C
100 percent ee
D
100 percent attached earlobes
20

Before the beginning of the Industrial Revolution, most peppered moths found in and around Manchester, England, exhibited light-colored wings speckled with black. After the Industrial Revolution, peppered moths with dark wings became predominant in the area.Which term best describes the change from more light-colored moths to more dark-colored moths?

Question illustration
A
competition
B
evolution
C
acquired
D
overpopulation

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