BIO101 Graded Exam 3 + Correct Answers
Question 1
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Japanese Emperor Hirohito and China’s Premier Zhou Enlai were kept alive during their last days by many transfusions of blood. Without knowing further details of their ailments, which of the following functions most likely provided the most significant contribution to keeping them alive?
Select one:
a.provision of immune antibodies
b.provision of albumin and fibrinogen
c.oxygen and carbon dioxide carrying capacity
d.provision of organic nutrients such as glucose, amino acids, and fats
e.supplement of hormone levels
Correct Answer
c.oxygen and carbon dioxide carrying capacity
Question 2
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Which of the following statements about junctions is false?
Select one:
a. Gap junctions allow small molecules to pass from cell to cell.
b Junctions help tissue cells function in a coordinated manner.
c. Adhesion junctions anchor tissues in place.
d. A tight junction forms an impermeable barrier between two cells.
e. Junctions link connective tissue cells.
Correct Answer
e. Junctions link connective tissue cells.
Question 3
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The type of membrane that covers the heart is called a
Select one:
a. serous membrane.
b. mucous membrane.
c. pleural membrane.
d. basement membrane.
e. plasma membrane.
Correct Answer
a. serous membrane.
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Question 4
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During a medical test for spinal meningitis, the physician orders a “spinal tap.” What cavity is fluid removed from in this test?
Select one:
a. abdominal
b. pericardial
c. pleural
d. thoracic
e. dorsal
Question 5
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A heart murmur that sounds like “lub-dub-shush” would indicate which of the following?
Select one:
a.high blood pressure in the atria
b.low blood pressure in the ventricles
c. semilunar valve is not closing properly
d. ventricles are not contracting properly
e.atrioventricular valve is not closing properly
Question 6
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Contraction of the right ventricle forces blood initially into the
Select one:
a.right atrium.
b.aorta.
c.left atrium.
d.pulmonary vein.
e.pulmonary artery.
Question 7
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Lymph, such as that collected under a blister, contains all the components of blood except
Select one:
a.salts.
b.blood cells, albumin, and other plasma proteins.
c.sugars.
d.dissolved gases.
e.water.
Question 8
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Usually there is only one capillary bed between an artery and vein; an exception to this is the
Select one:
a. brain circulation which requires special continuous blood flow.
b.large bones that lack capillaries but are fed by an artery/vein system.
c.pulmonary system that serves the lungs and where all factors are reversed.
d.coronary vessels that serve the heart.
e.hepatic portal system which runs from the capillary bed in the intestine to the capillary bed in the liver via a hepatic portal vein.
Question 9
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Traditional vaccines contain
Select one:
a.horse serum.
b.antibodies made by plasma cells.
c.penicillin.
d. antigens that are no longer virulent.
e. antibiotics against a particular bacterial strain.
Question 10
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Lymph is primarily comprised of
Select one:
a.nutrients.
b.plasma proteins.
c.water.
d.electrolytes.
e.blood cells.
Question 11
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Lymph is
Select one:
a.returned to the circulatory system via the subclavian veins.
b.returned to the circulatory system via arteries.
c.excreted as sweat.
d.absorbed by tissues.
e.excreted by the kidneys.
Question 12
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Which of the following is an example of a mechanical barrier to infection?
Select one:
a.bacteria that live in the intestine
b.pH of the stomach
c.mucous membrane
d.oil gland secretions
e.inflammatory response
Question 13
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As we become older, the
Select one:
a. liver receives increased blood flow.
b. production of gametes continues in both sexes.
c. skin becomes more elastic.
d. blood vessels become more rigid.
e. heart decreases in size.
Question 14
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Which statement about homeotic genes is inaccurate?
Select one:
a. The sequence of nucleotides, called a homeobox, differs from organism to organism.
b. They are sequentially arranged on the chromosome in the same sequence they are activated during development of the embryo in Drosophila.
c. Each homeotic gene has a variable region and a sequence called the homeobox that is very similar in all such genes.
d. They have been found in almost all eukaryotic organisms.
e. All homeotic genes are thought to be derived from an original DNA sequence that has been highly conserved in evolution because of its importance to animal evolution.
Question 15
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Which association is mismatched?
Select one:
a. allantois—waste storage
b. yolk—nourishment
c. chorion—gas exchange
d. yolk sac—food storage
e. amnion—blood vessels
Question 16
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After gastrulation in vertebrates, the blastopore will eventually become the
Select one:
a. brain.
b. anus.
c. heart.
d. mouth.
e. ear.
Question 17
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Which of the following would be classified in a phylum other than Echinodermata?
Select one:
a. crayfish
b. sea urchin
c. sea cucumber
d. sand dollar
e. sea star
Question 18
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Which of the following organisms exhibit complete metamorphosis?
Select one:
a. grasshoppers
b. lobsters
c. starfish
d. butterfly
e. crayfish
Question 19
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Which of the following is an arthropod?
Select one:
a. snails
b. squids
c. clams
d. lobsters
e. nautiluses
Question 20
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Nematocysts are characteristic of
Select one:
a. cnidarians.
b. flatworms.
c. clams.
d. sponges.
e. roundworms.
Question 21
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What system do the cnidaria have that sponges lack?
Select one:
a. nervous
b. reproductive
c. respiratory
d. circulatory
e. excretory
Question 22
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Animals with a three-chambered heart would include
Select one:
a. sharks.
b. birds.
c. fish.
d. mammals.
e. amphibians.
Question 23
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The most primitive primates are considered to be the
Select one:
a. New World monkeys.
b. apes.
c. Old World monkeys.
d. humans.
e. prosimians.
Question 24
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Which of these is an accurate comparison between birds and mammals?
Select one:
a. Birds are cold-blooded; mammals are warm-blooded.
b. Birds, unlike mammals, require no parental care.
c. Birds are egg laying; no mammals lay eggs.
d. Birds have air sacs in addition to lungs; mammals have no air sacs.
e. Birds lack a septum between the ventricles; mammals have a septum between the ventricles.
Question 25
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What is the correct evolutionary pathway for the key features of chordates?
Select one:
a. notochord—vertebrae—jaws—bony skeleton—lungs—4 limbs—amniotic egg—mammary glands
b. notochord—vertebrae—jaws—bony skeleton—mammary glands—lungs—4 limbs—amniotic egg
c. mammary glands—notochord—vertebrae—jaws—lungs—4 limbs—amniotic egg—bony skeleton
d. vertebrae—notochord—jaws—bony skeleton—lungs—4 limbs—amniotic egg—mammary glands
e. notochord—vertebrae—jaws—bony skeleton—lungs—amniotic egg—4 limbs—mammary glands
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