Jaslyn Villalona
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Practice test for Dr. Geiger Biology 2 Exam

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Exam 3 Practice Test

Pregunta 1 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • heterotrphy

  • bilateral symmetry

  • closed circulatory system

  • tissues

  • multicellularity

Explicación

Pregunta 2 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • heterotrophy

  • flagellated gametes

  • nervous conduction and muscular movement

  • the structural carbohydrate, chitin

  • cells that have mitochondria

Explicación

Pregunta 3 de 55

1

What is an important advantage to a closed circulatory system?

Selecciona una de las siguientes respuestas posibles:

  • quicker early development

  • improved movement/activity

  • development of coelom

  • development of tissues

Explicación

Pregunta 4 de 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)

Selecciona una de las siguientes respuestas posibles:

  • butterflies

  • flies

  • beetles

  • bees/wasps/ants

  • grasshoppers

Explicación

Pregunta 5 de 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.

Selecciona una de las siguientes respuestas posibles:

  • statements 2 & 4 only

  • statement 1 only

  • statements 2 & 3 only

  • statements 3 & 4 only

Explicación

Pregunta 6 de 55

1

Which of the following is NOT a feature of chordates?

Selecciona una de las siguientes respuestas posibles:

  • pharyngeal slits/clefts

  • ecdysis (i.e., molting)

  • dorsal. hollow nerve cord

  • post-anal tail

  • notochord

Explicación

Pregunta 7 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • snakes

  • birds

  • tuataras

  • lizards

  • crocodiles

Explicación

Pregunta 8 de 55

1

What can ~ most amphibians do that humans cannot do?

Selecciona una de las siguientes respuestas posibles:

  • walk using legs

  • breathe through their skin

  • resist gravity with bony internal skeleton

  • have separate pulmonary circuit

  • breathe through lungs

Explicación

Pregunta 9 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 10 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • mammals

  • birds

  • insects

  • amphibians

  • ray-finned fishes

Explicación

Pregunta 11 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • Yes

  • No

Explicación

Pregunta 12 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • birds

  • mollusks

  • fishes

  • mammals

  • arthropods

Explicación

Pregunta 13 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 14 de 55

1

Of the following organisms, which are amniotes ?

Selecciona una de las siguientes respuestas posibles:

  • egg-laying mammals only

  • amphibians

  • fishes

  • mammals

  • placental mammals only

Explicación

Pregunta 15 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • the ability to maintain a constant body temperature

  • two pairs of appendages

  • a four-chambered heart

  • the shelled, amniotic egg

  • bony scales

Explicación

Pregunta 16 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • bilateral symmetry

  • isohedral symmetry

  • radial symmetry

  • no symmetry

Explicación

Pregunta 17 de 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"?

Selecciona una de las siguientes respuestas posibles:

  • sugars

  • CO2 (carbon dioxide)

  • prey items that the zooxanthellae capture

  • a safe place to live

Explicación

Pregunta 18 de 55

1

What feature do cnidarians have that porifera do not have?

Selecciona una de las siguientes respuestas posibles:

  • multicellularity

  • sexual reproduction

  • hetertrophy

  • tissues

Explicación

Pregunta 19 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • pseudocoelomate

  • quasicoelomate

  • coelomate

  • acoelomate

Explicación

Pregunta 20 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • be highly maneuverable

  • effectively circulate its blood

  • use its own bladder as a respiratory organ

  • not sink

Explicación

Pregunta 21 de 55

1

Which of the following features is NOT present in arthropods?

Selecciona una de las siguientes respuestas posibles:

  • 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)

Explicación

Pregunta 22 de 55

1

Which of the following is not an insect?

Selecciona una de las siguientes respuestas posibles:

  • butterfly

  • bettle

  • ant

  • spider

  • bee

Explicación

Pregunta 23 de 55

1

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

Selecciona uno de los siguientes:

  • VERDADERO
  • FALSO

Explicación

Pregunta 24 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • crocidile

  • parrot

  • frog

  • opossum

  • platypus

Explicación

Pregunta 25 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 26 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • mouth

  • stomach

  • liver

  • small intestine

  • large intestine

Explicación

Pregunta 27 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • clean the surfaces of the intestinal cells

  • promote movement of waste products

  • promote movement of chyme

  • nutrient absorption

  • waste excretion

Explicación

Pregunta 28 de 55

1

The bile salts function in fat digestion by

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 29 de 55

1

Increased glucose levels in blood, after a meal trigger

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 30 de 55

1

Glucagon, the pancreatic hormone, functions to

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 31 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • intracellular fluid

  • interstitial fluid/hemolymph

  • blood plasma

  • digestive juices

  • cytosol

Explicación

Pregunta 32 de 55

1

Corrected order of blood flow in human circulatory system:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 33 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 34 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • radiation

  • conduction

  • convection

  • evaporation

  • all of the above

Explicación

Pregunta 35 de 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

Selecciona uno de los siguientes:

  • VERDADERO
  • FALSO

Explicación

Pregunta 36 de 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

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 37 de 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

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 38 de 55

1

A defining characteristic of birds

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 39 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • notochord.

  • dorsal hollow nerve cord.

  • post-anal tail.

  • pharyngeal slits/clefts.

  • bony or cartilaginous vertebral column.

Explicación

Pregunta 40 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 41 de 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?

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 42 de 55

1

How many different cell types are in the human body?

Selecciona una de las siguientes respuestas posibles:

  • ~50

  • ~200

  • 4

  • ~100

  • ~500

Explicación

Pregunta 43 de 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?

Selecciona una de las siguientes respuestas posibles:

  • voluntary

  • involuntary

  • It depends on the person

Explicación

Pregunta 44 de 55

1

A true 4-chambered heart does not allow

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 45 de 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?

Selecciona una de las siguientes respuestas posibles:

  • voluntary

  • involuntary

  • It depends on the person

Explicación

Pregunta 46 de 55

1

Where do absorbed fats finally enter the blood?

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 47 de 55

1

The body stores excess glucose as all the following, except

Selecciona una de las siguientes respuestas posibles:

  • glycogen in the pancreas

  • glycogen in the muscles

  • glycogen in the liver

  • fat in adipose tissue

Explicación

Pregunta 48 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 49 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 50 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 51 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 52 de 55

1

Which of the following is mismatched?

Selecciona una de las siguientes respuestas posibles:

  • O2 rich blood — arteriole

  • O2 rich blood — left ventricle

  • O2 poor blood — venule

  • O2 rich blood — pulmonary artery

  • O2 poor blood — right atrium

Explicación

Pregunta 53 de 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?

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 54 de 55

1

Why do arteries have thicker walls than veins have?

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 55 de 55

1

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

Selecciona una de las siguientes respuestas posibles:

  • chylomicrons

  • BOTH fluid lost from the capillary beds and chylomicrons

  • fluid lost from the capillary beds

  • glucose and amino acids from digestion

Explicación

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