Jaslyn Villalona
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Practice test for Dr. Geiger Biology 2 Exam

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Jaslyn Villalona
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Exam 3 Practice Test

Exam 3 Practice Test

Question 1 of 55

1

Which feature/trait do squid and octopus have that other members of phylum Mollusca, such as clams/oysters/snails, do not have?

Select one of the following:

  • heterotrphy

  • bilateral symmetry

  • closed circulatory system

  • tissues

  • multicellularity

Explanation

Question 2 of 55

1

Which of the following is (are) unique to animals ?

Select one of the following:

  • heterotrophy

  • flagellated gametes

  • nervous conduction and muscular movement

  • the structural carbohydrate, chitin

  • cells that have mitochondria

Explanation

Question 3 of 55

1

What is an important advantage to a closed circulatory system?

Select one of the following:

  • quicker early development

  • improved movement/activity

  • development of coelom

  • development of tissues

Explanation

Question 4 of 55

1

Which of the following groups of insects do we think has the highest number of species?

(NOTE: over 400,000 species have been described so far in this group of insects)

Select one of the following:

  • butterflies

  • flies

  • beetles

  • bees/wasps/ants

  • grasshoppers

Explanation

Question 5 of 55

1

Which of these, if true, would support the claim that the ancestral cnidarians had bilateral symmetry?

1.) Cnidarian larvae possess anterior-posterior, left-right, and dorsal-ventral sides/positions.

2.) Cnidarians have fewer Hox genes than bilaterians.

3.) All living cnidarians have both endoderm and ectoderm layers as embryos.

4.) All cnidarians are acoelomate.

Select one of the following:

  • statements 2 & 4 only

  • statement 1 only

  • statements 2 & 3 only

  • statements 3 & 4 only

Explanation

Question 6 of 55

1

Which of the following is NOT a feature of chordates?

Select one of the following:

  • pharyngeal slits/clefts

  • ecdysis (i.e., molting)

  • dorsal. hollow nerve cord

  • post-anal tail

  • notochord

Explanation

Question 7 of 55

1

Which of the following are the only living animals that descended directly from dinosaurs?

Select one of the following:

  • snakes

  • birds

  • tuataras

  • lizards

  • crocodiles

Explanation

Question 8 of 55

1

What can ~ most amphibians do that humans cannot do?

Select one of the following:

  • walk using legs

  • breathe through their skin

  • resist gravity with bony internal skeleton

  • have separate pulmonary circuit

  • breathe through lungs

Explanation

Question 9 of 55

1

Which 2 important features distinguish bony fish (e.g., goldfish, grouper) from cartilaginous fish (e.g., stingrays, sharks)?

Select one of the following:

  • gill cover/operculum & post-anal tail

  • post-anal tail & swim bladder

  • dorsal, hollow nerve chord and gills

  • swim bladder & gill cover/ operculum

  • dorsal, hollow nerve chord & post-anal tail

Explanation

Question 10 of 55

1

Which of the following are the most abundant and diverse of living vertebrates?

Select one of the following:

  • mammals

  • birds

  • insects

  • amphibians

  • ray-finned fishes

Explanation

Question 11 of 55

1

Do members of the phylum Cnidaria have a separate mouth and anus?

Select one of the following:

  • Yes

  • No

Explanation

Question 12 of 55

1

In terms of numbers of species, which is the most successful group of animals?

Select one of the following:

  • birds

  • mollusks

  • fishes

  • mammals

  • arthropods

Explanation

Question 13 of 55

1

Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that...

Select one of the following:

  • arthropods evolved before vertebrates did

  • ancestral arthropods must have been poorly adapted to aquatic life and thus experienced a selective pressure to invade land

  • arthropods have had more time to coevolve with land plants than vertebrates have had

  • extant terrestrial arthropods are better adopted to terrestrial life than are extant terrestrial vertebrates

Explanation

Question 14 of 55

1

Of the following organisms, which are amniotes ?

Select one of the following:

  • egg-laying mammals only

  • amphibians

  • fishes

  • mammals

  • placental mammals only

Explanation

Question 15 of 55

1

Which of these characteristics added most to vertebrate success in relatively dry environments?

Select one of the following:

  • the ability to maintain a constant body temperature

  • two pairs of appendages

  • a four-chambered heart

  • the shelled, amniotic egg

  • bony scales

Explanation

Question 16 of 55

1

What kind of symmetry do members of the phylum Porifera exhibit?

Select one of the following:

  • bilateral symmetry

  • isohedral symmetry

  • radial symmetry

  • no symmetry

Explanation

Question 17 of 55

1

Some corals have photosynthetic organisms (i.e., zooxanthellae) living within their tissues. What benefit do these corals get from their photosynthetic 'house- mates"?

Select one of the following:

  • sugars

  • CO2 (carbon dioxide)

  • prey items that the zooxanthellae capture

  • a safe place to live

Explanation

Question 18 of 55

1

What feature do cnidarians have that porifera do not have?

Select one of the following:

  • multicellularity

  • sexual reproduction

  • hetertrophy

  • tissues

Explanation

Question 19 of 55

1

Which of the following terms describes an animal with a body cavity completely enclosed within mesoderm tissue?

Select one of the following:

  • pseudocoelomate

  • quasicoelomate

  • coelomate

  • acoelomate

Explanation

Question 20 of 55

1

The presence of a swim bladder allows the typical ray-finned fish to stop swimming and still

Select one of the following:

  • be highly maneuverable

  • effectively circulate its blood

  • use its own bladder as a respiratory organ

  • not sink

Explanation

Question 21 of 55

1

Which of the following features is NOT present in arthropods?

Select one of the following:

  • molting of exoskeleton to grow

  • closed circulatory system

  • segmentation of body parts

  • open circulatory system

  • molting (i.e., replacement of "old" exoskeleton with new one)

Explanation

Question 22 of 55

1

Which of the following is not an insect?

Select one of the following:

  • butterfly

  • bettle

  • ant

  • spider

  • bee

Explanation

Question 23 of 55

1

Acoelomate (i.e., no coelom) is a feature of chordates... true or false?

Select one of the following:

  • True
  • False

Explanation

Question 24 of 55

1

Which of the following organisms does NOT have a 4 chambered heart?

Select one of the following:

  • crocidile

  • parrot

  • frog

  • opossum

  • platypus

Explanation

Question 25 of 55

1

A "complete digestive tract" differs from a gastrovascular cavity in that only the complete tract

Select one of the following:

  • permits extracellular digestion

  • has teeth and tentacles to help with ingestion

  • uses its surface area for nutrient absorption

  • has specialized compartments

  • allows elimination of undigested waste

Explanation

Question 26 of 55

1

In humans, the first opportunity for ingested food to undergo enzymatic hydrolysis is in the

Select one of the following:

  • mouth

  • stomach

  • liver

  • small intestine

  • large intestine

Explanation

Question 27 of 55

1

The brush border/microvilli of the epithelial cells lining the small intestine have a specific form. What is their function?

Select one of the following:

  • clean the surfaces of the intestinal cells

  • promote movement of waste products

  • promote movement of chyme

  • nutrient absorption

  • waste excretion

Explanation

Question 28 of 55

1

The bile salts function in fat digestion by

Select one of the following:

  • hydrolyzing fat molecules to glycerol and fatty acids

  • separating individual fat molecules from each other

  • dissolving fats in water

  • dispersing big droplets of fats to small droplets

  • triggering the secretion of pancreatic lipase

Explanation

Question 29 of 55

1

Increased glucose levels in blood, after a meal trigger

Select one of the following:

  • glucagon release from pancreas

  • insulin release from the pancreas

  • secretin release from the duodenum

  • cholecystokinin release from the pancreas

  • activation of amylase in the blood

Explanation

Question 30 of 55

1

Glucagon, the pancreatic hormone, functions to

Select one of the following:

  • stimulate hunger

  • inhibit activity in the small intestine

  • increase fat storage in fat cells

  • reduce glucose levels in the blood

  • stimulate the liver to release glucose

Explanation

Question 31 of 55

1

The fluid that moves around in the circulatory system of a typical arthropod is the

Select one of the following:

  • intracellular fluid

  • interstitial fluid/hemolymph

  • blood plasma

  • digestive juices

  • cytosol

Explanation

Question 32 of 55

1

Corrected order of blood flow in human circulatory system:

Select one of the following:

  • left ventricle, aorta, right ventricle, lungs, & systemic capillaries

  • left ventricle, right ventricle, aorta, systemic capillaries , & lungs

  • left ventricle, aorta, systemic capillaries , right ventricle, & lungs

  • left ventricle, aorta, lungs, systemic capillaries, right ventricle

Explanation

Question 33 of 55

1

Which of the following tissue types is incorrectly matched with its function?

Select one of the following:

  • epithelial tissue- covers and lines organs and body cavities

  • muscle tissue- holds the tissues and organs in place

  • connective tissue- stores fat and provides flexibility

  • nervous tissue- processing and transmission of information

Explanation

Question 34 of 55

1

Heat exchange between an organism and its environment to maintain body temperature (thermoregulation) is achieved by

Select one of the following:

  • radiation

  • conduction

  • convection

  • evaporation

  • all of the above

Explanation

Question 35 of 55

1

For blood flow in fish gills, net movement of oxygen from water into blood occurs only in the first half of the distance where blood and water are in close contact

Select one of the following:

  • True
  • False

Explanation

Question 36 of 55

1

The desert ant, which lives in the Sahara Desert, has several features and behaviors that allow it to live in such a harsh environment. These include all the following, except

Select one of the following:

  • living in underground burrows that are much cooler than the above ground temperatures.

  • unusual enzymes that work optimally at extremely hot temperatures.

  • only leaving its burrows during the day to capture its prey items.

  • long legs that allow it to run very fast to capture its prey so it spends little time aboveground.

  • long legs which lift its body above the extremely hot desert sands.

Explanation

Question 37 of 55

1

Galapagos iguanas are the only iguana species that regularly spends time in saltwater, where they eat macroalgae growing on the submerged rocks. They manage to stay warm enough to swim in the very cold waters surrounding the Galapagos islands. They stay warm enough by all the following, except

Select one of the following:

  • They gain heat via conduction by laying next to other iguanas that are warmer.

  • They gain heat via evaporation in their relatively large nasal (i.e., nose) cavities.

  • They gain heat via radiation from the sun shining down on them.

  • They gain heat via conduction from lying on the dark rocks on land.

Explanation

Question 38 of 55

1

A defining characteristic of birds

Select one of the following:

  • is a four-chambered heart.

  • is that they build nests and care for their young.

  • are feathers.

  • is their having both a systemic circuit and a pulmonary circuit.

  • is endothermy.

Explanation

Question 39 of 55

1

The 4 characteristic features of chordates include all the following, except

Select one of the following:

  • notochord.

  • dorsal hollow nerve cord.

  • post-anal tail.

  • pharyngeal slits/clefts.

  • bony or cartilaginous vertebral column.

Explanation

Question 40 of 55

1

Successful invasion of the land by tetrapods required all the following, except

Select one of the following:

  • systems to prevent embryos from drying out.

  • system to prevent the whole-body desiccation.

  • lungs which were more efficient than fish gills to extract oxygen from the air.

  • redesigned heart and circulatory systems to support larger muscles.

  • legs to support the weight of the body.

Explanation

Question 41 of 55

1

A student in a general biology 2 class told their professor that they missed class the previous week because they had suffered an injury to their notochord. Is this possible?

Select one of the following:

  • No, as the notochord is located within and protected by the rigid vertebral column containing calcium phosphate.

  • No, as human adults do not have a notochord.

  • Yes, as the notochord is made of cartilage which is not as rigid as bone.

  • Yes, as general biology 2 students very often suffer damage to their notochords because of poor posture when reading their textbooks.

  • Yes, as the notochord is not contained within or protected by the bony vertebral column.

Explanation

Question 42 of 55

1

How many different cell types are in the human body?

Select one of the following:

  • ~50

  • ~200

  • 4

  • ~100

  • ~500

Explanation

Question 43 of 55

1

Is the human body’s response to excessively cold temperatures, shivering and vasoconstriction of blood vessels near the skin surface, voluntary or involuntary?

Select one of the following:

  • voluntary

  • involuntary

  • It depends on the person

Explanation

Question 44 of 55

1

A true 4-chambered heart does not allow

Select one of the following:

  • the mixing of blood from the systemic circuit with the pulmonary circuit.

  • the mixing of blood from the pulmonary circuit with the gill circuit.

  • the mixing of blood from the right side of the body with the left side of the body.

  • the mixing of blood from the systemic circuit with the gill circuit.

  • the mixing of blood from the right lung with the left lung.

Explanation

Question 45 of 55

1

Is the human body’s response to excessively hot temperatures, sweating and vasodilation of blood vessels near the skin surface, voluntary or involuntary?

Select one of the following:

  • voluntary

  • involuntary

  • It depends on the person

Explanation

Question 46 of 55

1

Where do absorbed fats finally enter the blood?

Select one of the following:

  • within chylomicrons in the lymph at the subclavian veins

  • from epithelial cells lining the small intestine into the hepatic portal vein

  • within chylomicrons in the lymph into the hepatic portal vein

  • within chylomicrons in the liver

  • from epithelial cells lining the small intestine into the hepatic portal artery

Explanation

Question 47 of 55

1

The body stores excess glucose as all the following, except

Select one of the following:

  • glycogen in the pancreas

  • glycogen in the muscles

  • glycogen in the liver

  • fat in adipose tissue

Explanation

Question 48 of 55

1

Why is the protease pepsin released from cells in an inactive form?

Select one of the following:

  • so it can reach very high concentrations within the cells

  • so that it can be produced constantly

  • so it does not break down proteins found within the cells

  • so it can be produced only when it is needed

  • so it can be more easily transported across plasma membranes

Explanation

Question 49 of 55

1

What would be an important consequence of losing all your alpha cells in your pancreas?

Select one of the following:

  • inability to lower your blood glucose levels once they are > 90 mg/100ml

  • inability to raise your blood glucose levels once they are < 90 mg/100ml

  • inability to increase the pH of the chyme entering your duodenum

  • inability to decrease the pH of the chyme entering your duodenum

  • inability to use glucose as a source of energy in your cells

Explanation

Question 50 of 55

1

A very low level of glucose in the blood after a long period of fasting will cause

Select one of the following:

  • activation of amylase in the blood.

  • pepsinogen release from chief cells in the stomach.

  • insulin release from the pancreas.

  • secretin release from the duodenum.

  • glucagon release from the pancreas.

Explanation

Question 51 of 55

1

What is meant by the term “essential” in reference to nutrients?

Select one of the following:

  • They cannot be synthesized within the human body and need to be a part of the diet.

  • They are needed only during early developmental stages and are not needed once an organism reaches maturity.

  • They can only be synthesized by plants and therefore are not needed by animals.

  • They can only be synthesized by animals and therefore are not needed by plants.

  • They can be created from scratch/de novo within the human body from other organic molecules.

Explanation

Question 52 of 55

1

Which of the following is mismatched?

Select one of the following:

  • O2 rich blood — arteriole

  • O2 rich blood — left ventricle

  • O2 poor blood — venule

  • O2 rich blood — pulmonary artery

  • O2 poor blood — right atrium

Explanation

Question 53 of 55

1

The following structures are involved in the vertebrate circulatory system: (1) veins, (2) arterioles, (3) capillaries, (4) venules, and (5) arteries. What is the correct order of blood flow once it leaves the capillary beds?

Select one of the following:

  • 5, 2, 3, 4, 1

  • 1, 2, 3, 4, 5

  • 4, 1, 5, 2, 3

  • 4, 1, 2, 5, 3

  • 5, 2, 1, 4, 3

Explanation

Question 54 of 55

1

Why do arteries have thicker walls than veins have?

Select one of the following:

  • to minimize the passage of molecules through the endothelial cells

  • to allow greater diffusion of amino acids and glucose

  • to allow greater diffusion of O2 and CO2

  • to tolerate the greater blood pressure found within the arteries

  • to maintain the volume of blood in the circulatory system

Explanation

Question 55 of 55

1

What is returned to the blood at the junction between the lymphatic system and the circulatory system?

Select one of the following:

  • chylomicrons

  • BOTH fluid lost from the capillary beds and chylomicrons

  • fluid lost from the capillary beds

  • glucose and amino acids from digestion

Explanation

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