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Biology 205 (BIOL 205-UCAL) Midterm II

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Question 1

The first tetrapods were most likely...

A	...sting rays with gas exchange lungs.
B	...fishes with necks and four limbs.
C	...vertebrates with complex lungs.
D	...fishes that dragged themselves from one pool of water to another.

Question 2

During digestion, fats brake down to fatty acids and what other chemical compound?

A	Monosaccharides
B	Hydrochloric acid
C	Glycerol
D	Amino acids
E	Nucleotides

Question 3

Humans are belong to __I__ Domain and __II__ Phylum.

A	I. Chordata II. Primates
B	I. Eukaryota II. Chordata
C	I. Eukaryota II. Primates
D	I. Primates II. Homininae
E	I. Archaea II. Primates

Question 4

In cladistics, what is the primary criterion for grouping of organisms?

A	Common homologous and analogous features.
B	Ability to interbreed among individuals.
C	Common ancestral based decedents.
D	Fossil record indicating similar characteristics.
E	Ability to interbreed and reproduce viable offspring.

Question 5

Which of the following vitamins is responsible for production of nucleic acids and read blood cells?

A	Vitamin B₆
B	Vitamin A
C	Vitamin B₁₂
D	Vitamin B₁
E	Vitamin K

Question 6

Which of the following hominins were the earliest to colonize beyond Africa?

A	Homo sapiens
B	Homo habilis
C	Homo neanderthalensis
D	Homo ergaster
E	Homo erectus

Question 7

Mammals belongs to the amniotes. However, mammals are different from reptiles (also amniotes) because...

A	...mammals are also tetrapods.
B	...mammals are part of the primate group.
C	...mammals have thick notochords.
D	...mammals have hair and mammary glands.
E	...mammals do not produce eggs.

Question 8

Peter and Rosemary Grants have studied evolutionary changes in Darwin's finches. Which of the the statements best describe the key conclusion of this study?

A	Darwin's finches are unique because they are the only population to have a large variation in beak sizes.
B	Hybrids have better survival rate than the others in a population.
C	The response to environmental changes often result in dramatic shift in phenotypes.
D	Competition for food can drive evolutionary changes and adaptations.

Question 9

The following diagram is a phylogenetic tree of primates. What organisms are indicated by VI and VII respectively?

A	Tarsiers and Gibbons
B	Gorillas and Chimpanzees
C	Orangutans and Gibbons
D	Orangutans and Gorillas
E	Gibbons and Orangutans

Question 10

Organisms wit which of the feeding mechanism has the most complex digestive system?

A	Bulk feeders
B	Suspension feeders
C	Fluid feeders
D	Substrate feeders

Question 11

Biologists found over 1000 different snake species on one island. This is an example of what mechanism?

A	Zygotic barriers
B	Adaptive radiation
C	Temporal isolation
D	Sympathetic speciation
E	Polyploidy

Question 12

What is the main reason for the evolutionary development of amniotes?

A	As a counteraction to balance the pressure and temperature conditions of the zygote.
B	Protect the eggs from predators.
C	Adaptation to terrestrial environments.
D	Reduce the zygote breakdown.

Question 13

What part of the world you expect to observe marsupials in their natural habitat (modern day)?

A	South Asia
B	Antarctic region.
C	China
D	Russia and Canada
E	New Zealand

Question 13 Explanation:

Also Australia, Central and South America.

Question 14

How many amino acids human body cannot produce its own?

A	Fifteen
B	Eight
C	Ten
D	Five
E	Three

Question 15

Which of the following statements are true about vitamins and minerals?

A	They are compounds usually acquired from food sources. Vitamins are organic compounds while minerals are inorganic compounds.
B	There are thirty essential vitamins requirements for humans according to Health Canada guidelines.
C	They are organic substances which human do not produce its' own. Mostly acquired from food sources.
D	They are chemicals produced by the monosccharies and absorbed through amino acids.
E	While it is possible to live a healthy life without minerals, all humans must requires vitamins.

Question 16

Which part of this diagram of the human brain depicts the thalamus?

Image Credit: Campbell Biology Concepts & Connections by Reece, Taylor, Simon, Dickey and Soctt

A	Part D
B	Part B
C	Part C
D	Part A

Question 17

Scientists have used the molecular clock model to identify the origins of HIV-1M virus which causes AIDS. What is the major assumption in molecular clock model?

A	The modern HIV virus is derived from an ancestor that have the exact same characteristics as the current HIV-1M virus.
B	The HIV virus originated from primates and transferred to human.
C	The rate at which the HIV genome evolve is consent at all times.
D	The HIV genome is composed of fast self replicating DNA that produce a new evolutionary trait at an exponential rate.

Question 18

What is the evolutionary connection between the lungs and swim bladders?

A	Both developed at the same time under same environmental conditions.
B	They have no evolutionary connection because they are analogous features.
C	Lugs evolved from swim bladders.
D	Swim bladders evolved from lungs.

Question 19

Some of the muscles and glands in the digestive track is controlled by...

A	...sympathetic division of the motor nervous system.
B	...enteric division of the autonomic nervous system.
C	...sympathetic division of the autonomic nervous system.
D	...motor system of the peripheral nervous system.
E	...central nervous system.

Question 20

The following diagram is a phylogenetic tree of primates. What organisms are indicated by I, II, III, and IV respectively?

A	I. Tarsiers II. New World monkeys III. Gibbons IV. Orangutans
B	I. New World monkeys II. Old World monkeys III. Gibbons IV. Chimpanzees
C	I. Tarsiers II. New World monkeys III. Old World monkeys IV. Gibbons
D	I. Old World monkeys II. New World monkeys III. Gibbons IV. Orangutans
E	I. New World monkeys II. Old World monkeys III. Tarsiers IV. Chimpanzees

Question 21

What is the primary function of chorion and allantois in amniotic egg?

A	Enables the embryo to obtain oxygen from air and dispose carbon dioxide.
B	Protection of the embryo from the outside environment through temperature regulation.
C	Structure for the shell in which the honeycomb allantois attached itself to chorion.
D	Production and processing of nutrients for the embryo.

Question 22

Which of the following statement is true about resting potential of human nervous system?

A	Resting neurons have a slightly negative charge inside the cell.
B	Resting neurons have a slightly positive charge inside the cell.
C	Resting neurons for humans is about +/- 5 mV.
D	Resting neurons have a zero charge inside the cell.

Question 23

Which of the following in our Nervous System responsible for insulating axons?

A	cell body
B	glia
C	myelin sheath and glia
D	axon hillock
E	myelin sheath

Question 24

Human brain estimated to have how many neutrons?

A	800 billion
B	100 billion
C	100 million
D	500 billion
E	800 million

Question 25

Based on the three main categories of how animals obtain and process food, which of the following does not fit with the others?

A	Crows
B	Raccoons
C	Gorilla
D	Human
E	Cockroaches

Question 25 Explanation:

Gorilla belongs to the herbivores while others belongs to the omnivores.

Question 26

Which of the following food molecule is not a polymer?

A	Fat
B	Protein
C	Saccharides
D	Nucleic acids

Question 27

In a hot arid environment, evolution prefer organisms with what type of adaptation(s)?

A	Organisms with endohermic metabolism.
B	Organisms that can store high volume of water within their bodies.
C	Organisms with lungs instead of a skin-bases gas exchanges.
D	Organisms that have the ability to fly therefore allowing them to migrate to locations with more food/water.
E	Organisms with ectothermic metabolism.

Question 28

Amphibians dominated the Carboniferous period. However, their adaptation to different environments is hindered by...

A	...limited food supply.
B	...vulnerability to dehydration.
C	...large number of predators.
D	...limited viable offspring.

Question 29

What is the first modern phylum to evolve a nervous system?

A	Arthropods
B	Molluscs
C	Annelids
D	Planarians
E	Cnidarians

Question 30

What is the best description for Humpback whales?

A	They are fluid feeders.
B	They are omnivores that feeds on both seaweeds and fishes.
C	They are suspension feeders.
D	They are herbivores and the primary diet is eat seaweed.
E	They are substrate feeders.

Question 31

The fin extensions in front of the stingrays are used for...

A	...attack prey.
B	...move on the seabed and for sediment filtering.
C	...funnel in water for suspension feeding.
D	...swim against the currents.

Question 32

Which of the following is a common characteristic of hagfishes and lampreys?

A	They both lack jaws.
B	Hagfishes lack jaws and lampreys lack endoskeleton.
C	They both produce slime when threatened and it can be used for manufacturing textiles.
D	They both lack endoskeleton.

Question 33

During digestion, nucleic acids brake down what chemical compound/component?

A	Nucleotides
B	Glycerol
C	Amino acids
D	Fatty acids
E	Monosaccharides

Question 34

Which of the following belongs to Peripheral nervous system (PNS)?

I. Cranial nerves
II. Spinal nerves
III. Brain
IV. Spinal cord

A	III and IV
B	All of the listed items.
C	I, II and III
D	II and IV
E	I and II
F	None of the listed items.

Question 35

What is the primary function of a placenta?

A	Storing and processing nutrients.
B	Gas exchange for breathing.
C	Diffusion of nutrients from mother's blood to embryo's blood.
D	Protection of embryo from any external forces; chemical and physical.
E	Controlling temperature, pressure and chemical compounds for the embryo.

Question 36

Where do the majority of nutrients stored in the amniotic egg?

A	Yolk
B	Chorion
C	Amnion
D	Allantois
E	Embryo

Question 37

If a particular characteristic of a clade is not found in their ancestor, it is most likely a...

A	...genetically modified character.
B	...genetically evolved character.
C	...ancestral character.
D	...shared derived character.
E	...shared ancestral character.

Question 38

Why do chameleons change colour?

A	To warn the predators.
B	For altruism and mimicry where one individual or more benefited by changing appearance,
C	To communicate with each other.
D	To blend into the surrounding environment.

Question 39

Which of the clades, ray-finned fishes belongs to?

A	Chordates, Vertebrates, Jawed vertebrates, Tetrapods
B	Chordates, Vertebrates, Jawed vertebrates, Amniotes
C	Chordates, Vertebrates, Jawed vertebrates
D	Chordates, Vertebrates
E	Chordates, Vertebrates, Jawed vertebrates, Tetrapods, Amniotes

Question 40

What is the resting potential voltage for human nervous system?

A	10 mV
B	+50 mV
C	100 mV
D	-70 mV
E	-30 mV

Question 41

What is unique about PhyloCode classification?

A	It includes the new classification categories such as sub-phylums and sub-domains.
B	It includes only the evidence from DNA and other genetic materials.
C	It includes only the evidence from fossils record.
D	It includes a common ancestor and all its decedents.

Question 42

Which of the following undergoes the fastest evolution? (fastest change in terms of time)

A	mtDNA
B	RNA
C	rRNA
D	DNA

Question 43

What is the primary weakness in majority of modern phylogenetic trees?

A	The lack of DNA evidence to support most of the lineage events,
B	The lack of fossil record to trace the phylogenetic sequence to a common accessory.
C	The rapid evolutionary events are poorly recorded and therefore often not included in phylogenetic trees.
D	The lack of timing for each lineage event.

Question 44

Which of the following anthropoids is well known to be the first one to use sophisticated stone tools?

A	Homo erectus
B	Homo neanderthalensis
C	Homo sapiens
D	Homo habilis
E	Homo ergaster

Question 45

Which of the following is a true statement about hard bones and/or cartilages?

A	They are considered to be made up of nonliving materials, but bones are cartilages are generated by living cells.
B	Skeletal structure of the body is made up of about 90% cartilages.
C	Exoskeleton doesn't grow at the same rate as the physical growth of an organism.
D	Primary function of the cartilages is to support mechanical movements of organisms.

Question 46

Which of the following statements about animal digestive system is true?

A	Cellulose-digesting microbes are equally abundant both in carnivores and herbivores.
B	All vertebrates process hard solid foods in the Gizzard before the nutrients are absorbed by the intestine.
C	Omnivores have longer digestive track then carnivores of similar body size because vegetation is more difficult to break digest.
D	Meat is more difficult to digest than vegetable matter because of its high protein content.

Question 47

Were do we find most of the evidence for bipedalism?

A	Based on the DNA structure of arthropods.
B	Based on the size of the exoskeleton.
C	Based on the placement of spinal cord opening on the skulls.
D	Based on the length ratio of limbs to arms.
E	Based on the type of tools utilized by the arthropods.

Question 48

What is the relationship between evolution of feathers and flight?

A	The flight evolved first then feathers evolved to insulate high flying birds from old air masses.
B	The feathers evolved first as an insulation mechanism and later the flight was evolved.
C	It is difficult to prove the connection between feathers and flight due to lack of scientific evidence.
D	There is no relationship between them because feathers are just skin protectors.
E	The flight and feathers evolved at the same time.

Question 49

The Vitamin K plays an important role in what function of the human body?

A	Synthesis of fat
B	Visual pigments and epithelial tissues
C	Amino acid metabolism
D	Blood clotting
E	Collagen synthesis

Question 50

Which of the following group best describe the first vertebrates on land?

A	Bipedal vertebrates
B	Tetrapods
C	Cordatas
D	Animalia

Question 51

You open the Biology 205 exam booklet. You read the first question and realized that unlike Geology 449, you can actually answer the question using logic, reasoning and memory. After analyzing the question, you use your hand to record an answer. What are the steps which your nervous system takes to process above scenario?

A	Sensory receptor takes in the information and passed to the integration section of the Central Nervous System through Peripheral Nervous System. Once the information is processed, it is passed to organs through Peripheral Nervous System.
B	Sensory receptor takes in the information and passed to the integration section of Central Nervous System directly. Once the information is processed, it is passed to organs through Central Nervous System.
C	Sensory receptor takes in the information and passed to the integration section of the Peripheral Nervous System through Central Nervous System. Once the information is processed, it is passed to organs through Peripheral Nervous System.
D	Sensory receptor takes in the information and passed to the integration section of the Peripheral Nervous System through Central Nervous System. Once the information is processed, it is passed to organs through Central Nervous System.
E	Sensory receptor takes in the information and passed to the integration section of the Central Nervous System directly. Once the information is processed, it is passed to organs through Peripheral Nervous System.

Question 52

Coordination and learning of new body movements is mostly controlled by what part of the brain?

A	Hypothalamus.
B	Cerebrum.
C	Cerebellum.
D	Medulla oblongata in the Brain Stem.
E	Pons midbrain in the Brain Stem.

Question 53

If two groups of organisms interbreed, but resulting organism can no longer produce viable offspring of his/her own, the system is said to be...

A	...in temporal isolation state.
B	...experiencing a hybrid breakdown.
C	...in gametic isolation state.
D	...experiencing a reduced hybrid fertility.
E	...experiencing a reduced hybrid viability.

Question 54

Which of these is not a member of the anthropoids?

A	Gibbons
B	Humans
C	Tarsiers
D	Monkeys
E	Gorillas

Question 55

What was the function of gill slits, which lead to the formation of jaws, at the very beginning of their evolution?

A	Trapping suspended food particles.
B	Catching or killing the prey.
C	Breathing by exchanging oxygen atoms from the water.
D	Crushing and grinding of food particles.
E	Pumping water for movement.

Question 56

How do we describe a situation where a species undergo little or no change for a long period of time but characterized by sudden changes?

A	Species experienced a punctuated equilibrium.
B	This situation most likely caused by genetic drift.
C	The species most likely increased in diversity and their hybrid population.
D	The population has experienced an allopatric speciation.

Question 57

Which arrow shows the release of digestive enzymes by the liver?

Image Credit: Campbell Biology Concepts & Connections by Reece, Taylor, Simon, Dickey and Soctt

A	Arrow B
B	Arrow A
C	Arrow D
D	Arrow C

Question 58

In cladistics, what do you call the organisms that is known to have diverged before the linage of interest?

A	derived organisms
B	ingroup
C	outgroup
D	drifted organisms

Question 59

Which of the following organism is not belong to the apes category?

A	Chimpanzees
B	Monkeys
C	Orangutans
D	Gibbons
E	Bonobos

Question 59 Explanation:

But note that both monkeys and apes are part of the anthropod group.

Question 60

Which of the following statement is false?

A	Cecum of a cow is much larger than that of a human.
B	Integration of sensory data occurs within the Central Nervous System.
C	All tissues in a healthy human body have the ability to regenerate.
D	Humans are generically closer to Chimpanzees than to Gorillas.
E	Food molecules are chemical broken down by specialized enzymes.

Question 60 Explanation:

Nervous tissues do not regenerate like other tissues. In rare cases, the regeneration is extremely slow and often does not recover back to the original condition.

Question 61

According to current fossil record and our understanding, which came first; bipedalism, large brains or both around the same time?

A	Not enough evidence to support either way.
B	Bipedalism
C	Large brains
D	Both around the same time

Question 62

What mammal lineage do humans belong to?

A	Marsupials
B	Euterians
C	Monotremes
D	Biotremes

Question 62 Explanation:

Also known as placental mammals due to complex placentas.

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Credits: Based on the excellent class notes provided by, Dr. K. Ruckstuhl during Fall 2014.
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Sanuja Senanayake

Biology 205 Midterm II-University of Calgary

Go to: Midterm I | Midterm III | Final Exam

Biology 205 (BIOL 205-UCAL) Midterm II

Standing on the shoulders of giants

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Biology 205 (BIOL 205-UCAL) Midterm II

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Standing on the shoulders of giants