BIOL 123 Exam 1 Attempt. 90.00 out of 100.00. Review Indicates all the Correct Answers

Exam 1: Attempt review

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BIOL 123 Exam 1 Attempt Review

Home / My courses / 20SPCMP BIO-123-20104 / Week 2 / Exam 1

Started on Wednesday, March 25, 2020, 1:10 PM State Finished Completed on Wednesday, March 25, 2020, 1:59 PM Time taken 49 mins 3 secs Grade 90.00 out of 100.00 Question 1

What type of chemical reaction would be needed to convert a polypeptide into smaller subunits?

Correct Mark 2.50 out of 2.50

Select one: a. a hydrophobic reaction b. an isomeric reaction c. a hydrophilic reaction d. a hydrolysis reaction ! e. a dehydration reaction

The correct answer is: a hydrolysis reaction

Question 2

_ (blank) _ occurs when protein structure changes due to high heat.

Correct Mark 2.50 out of 2.50

Select one: a. Denaturation ! b. Saturation c. Synthesis d. Dehydration e. Hydrolysis

The correct answer is: Denaturation

Question 3

Where is the site of lysosome production?

Correct Mark 2.50 out of 2.50

Select one: a. nucleus b. rough endoplasmic reticulum c. smooth endoplasmic reticulum d. mitochondria e. Golgi apparatus !

The correct answer is: Golgi apparatus http://gmc.mrooms3.net/mod/quiz/review.php?attempt=2718795&cmid=3963826#question-2793073-36

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The correct answer is: Golgi apparatus

Question 4

Why are fats and oils referred to as triglycerides?

Correct Mark 2.50 out of 2.50

Select one: a. They have three glycerol molecules b. They have three fatty acid molecules ! c. They have three amino acids d. They have three phospholipids e. They have three steroid groups

The correct answer is: They have three fatty acid molecules

Question 5

Which structure would be prevalent inside cells that are producing many proteins?

Correct Mark 2.50 out of 2.50

Select one: a. centrioles b. lysosomes c. ribosomes ! d. mitochondria e. cytoskeletal fibers

The correct answer is: ribosomes

Question 6

What is the most significant function of the Golgi apparatus?

Incorrect Mark 0.00 out of 2.50

Select one: a. secreting proteins b. transporting proteins c. packaging proteins " d. synthesizing proteins e. lipid synthesis

The correct answer is: synthesizing proteins

Question 7

What type of molecule speeds up a reaction but is not consumed by that reaction?

Correct Mark 2.50 out of 2.50

Select one: a. a glycerol b. an enzyme ! c. a lipid d. a carbohydrate e. a nucleic acid

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e. a nucleic acid

The correct answer is: an enzyme

Question 8

What is the term for the semifluid interior of the cell?

Correct Mark 2.50 out of 2.50

Select one: a. cytoplasm ! b. cytoskeleton c. centrosome d. chromatin e. centrioles

The correct answer is: cytoplasm

Question 9 Incorrect Mark 0.00 out of 2.50

Why does the molecule shown make plaques along the walls of blood vessels?

Select one: a. it is hydrophillic and can trap dust b. it is hydrophobic and would not dissolve in blood fluid c. it is hydrophobic and can repel insects d. it is hydrophillic and likes to stick to blood fluid e. it is hydrophobic and serves as a waterproof barrier "

The correct answer is: it is hydrophobic and would not dissolve in blood fluid

Question 10 Correct

Ions located in bones and teeth that are also important in muscle contractions and nerve conduction are _ (blank) _.

Mark 2.50 out of 2.50

Select one: a. sodium b. chloride c. bicarbonate d. potassium e. calcium !

The correct answer is: calcium

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Question 11

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What process explains the unity and diversity of living organisms on our planet?

Correct Mark 2.50 out of 2.50

Select one: a. taxonomy b. metabolism c. evolution ! d. homeostasis e. reproduction

The correct answer is: evolution

Question 12

Which of the following is true of ATP?

Correct Mark 2.50 out of 2.50

Select one: a. It is used for long term energy storage b. It has a base of adenine, the sugar ribose, and three phosphate groups ! c. It contains adenine, ribose, and two phosphate groups d. It has a base of adenine, the sugar deoxyribose, and three phosphate groups e. It is very stable)

The correct answer is: It has a base of adenine, the sugar ribose, and three phosphate groups

Question 13

Where is the site for breakdown of engulfed bacteria, debris and macromolecules in an animal cell?

Correct Mark 2.50 out of 2.50

Select one: a. peroxisomes b. rough endoplasmic reticulum c. lysosomes ! d. mitochondria e. smooth endoplasmic reticulum

The correct answer is: lysosomes

Question 14

What polysaccharide is used in plants for support?

Correct Mark 2.50 out of 2.50

Select one: a. chitin b. glycogen c. collagen d. cellulose ! e. peptidoglycans

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The correct answer is: cellulose

Question 15

Which of the following molecules is more complex than a monosaccharide?

Correct Mark 2.50 out of 2.50

Select one: a. sucrose ! b. galactose c. deoxyribose d. glucose e. ribose

The correct answer is: sucrose

Question 16

All of the following are likely to be a function of proteins in living organisms except _ (blank) _.

Correct Mark 2.50 out of 2.50

Select one: a. defense b. support c. metabolism d. transport e. long term energy storage !

The correct answer is: long term energy storage

Question 17

What is true of humans?

Correct Mark 2.50 out of 2.50

Select one: a. they are classified as protists b. they are descended from apes c. they belong to the domain Archaea d. they share a common ancestor with apes ! e. they are prokaryotes

The correct answer is: they share a common ancestor with apes

Question 18

What level of biological organization typically includes the smallest amount of biological material?

Correct Mark 2.50 out of 2.50

Select one: a. ecosystem b. organism c. community

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d. organ ! e. population

The correct answer is: organ

Question 19 Correct

What is the overall charge of the resulting oxygen atom if a neutral oxygen atom gains two electrons from another atom?

Mark 2.50 out of 2.50

Select one: a. +2 b. 0 c. -2 ! d. unknown, as you need to know how many protons are present e. 2 more than its original mass number

The correct answer is: -2

Question 20

What form of glucose is used for short term storage in plants?

Correct Mark 2.50 out of 2.50

Select one: a. chitin b. glycogen c. starch ! d. peptidoglycans e. cellulose

The correct answer is: starch

Question 21

What is the result of unequal sharing of electrons between two atoms?

Correct Mark 2.50 out of 2.50

Select one: a. a nonpolar molecule, such as methane b. an ionic compound, such as salt c. an electronegative molecule, such as calcium ion d. a hydrophobic molecule, such as fat e. a polar molecule, such as water !

The correct answer is: a polar molecule, such as water

Question 22

What diagnostic procedure could be done in order to determine if a patient has a thyroid tumor?

Incorrect

Select one: http://gmc.mrooms3.net/mod/quiz/review.php?attempt=2718795&cmid=3963826#question-2793073-36

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Mark 0.00 out of 2.50

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Select one: a. Patient drinks low levels of radioactive Iodine-131, then has an X-ray b. Patient drinks high levels of radioactive Iodine-131, then has a PET scan c. Injection of low levels of radioactive glucose, then patient has a PET scan " d. Injection of low levels of radioactive Thallium-201, then patient has a PET scan e. Injection of high levels of radioactive glucose, then patient has an X-ray

The correct answer is: Patient drinks low levels of radioactive Iodine-131, then has an X-ray

Question 23 Correct Mark 2.50 out of 2.50

Using the animal cell diagram, identify the cell structure marked "e."

Select one: a. lysosome b. mitochondrion c. nucleus d. centrioles ! e. nucleolus

The correct answer is: centrioles

Question 24 Incorrect

You are investigating a sample of pond water under the microscope and notice a unicellular organism with a nucleus and structures for photosynthesis. What kingdom does this organism belong to?

Mark 0.00 out of 2.50

Select one: a. Animals b. Plants c. Fungi d. Protists e. Archaea "

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e. Archaea "

The correct answer is: Protists

Question 25 Correct Mark 2.50 out of 2.50

What is true regarding the diagram above?

Select one: a. two oxygen atoms interact to form one covalent bond b. two oxygen atoms interact to form two covalent bonds ! c. two oxygen atoms interact to form four covalent bonds d. two oxygen atoms interact to form an ionic bond e. two oxygen atoms interact to form hydrogen bonds

The correct answer is: two oxygen atoms interact to form two covalent bonds

Question 26

What is the correct order of the scientific method steps?

Correct Mark 2.50 out of 2.50

Select one: a. conclusion, experiment, hypothesis, observation b. hypothesis, observation, experiment, conclusion c. observation, experiment, hypothesis, conclusion d. experiment, hypothesis, observation, conclusion e. observation, hypothesis, experiment, conclusion !

The correct answer is: observation, hypothesis, experiment, conclusion

Question 27

Which organelle is physically connected to the nuclear envelope?

Correct Mark 2.50 out of 2.50

Select one: a. Golgi apparatus b. mitochondria c. endoplasmic reticulum ! d. nucleolus e. lysosome

The correct answer is: endoplasmic reticulum

Question 28

What is the benefit of low levels of radioactive isotopes in a medicinal setting?

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What is the benefit of low levels of radioactive isotopes in a medicinal setting?

Correct Mark 2.50 out of 2.50

Select one: a. as tracers in imaging organs using Xrays and PET Scans ! b. to reduce obesity and diabetes in teenagers c. to create drugs that work faster than normal d. to destroy aging and unwanted cells e. to prevent ultraviolet damage from the sun

The correct answer is: as tracers in imaging organs using Xrays and PET Scans

Question 29

What type of protein structure describes a linear sequence of amino acids?

Correct Mark 2.50 out of 2.50

Select one: a. quaternary b. primary ! c. pleated sheet d. alpha helix e. tertiary

The correct answer is: primary

Question 30

A scientist who studies a group of porcupines all living in the same area would be studying _ (blank) _.

Correct Mark 2.50 out of 2.50

Select one: a. a biosphere b. a species c. an ecosystem d. a population ! e. a community

The correct answer is: a population

Question 31

What kind of interaction occurs between atoms of sodium and chlorine?

Correct Mark 2.50 out of 2.50

Select one: a. The sodium atom gives up one proton b. The sodium atom gives up one neutron c. The chlorine atom gives up one neutron d. The chlorine atom gives up one electron e. The sodium atom gives up one electron !

The correct answer is: The sodium atom gives up one electron http://gmc.mrooms3.net/mod/quiz/review.php?attempt=2718795&cmid=3963826#question-2793073-36

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The correct answer is: The sodium atom gives up one electron

Question 32

Bacteria uses _ (blank) _ to strengthen its cell wall/

Correct Mark 2.50 out of 2.50

Select one: a. peptidoglycans ! b. starch c. chitin d. cellulose e. glycogen

The correct answer is: peptidoglycans

Question 33

What is the term for a specific combination of bonded atoms which always react in the same way?

Correct Mark 2.50 out of 2.50

Select one: a. a hydrophilic group b. a hydrophobic group c. an organic group d. a functional group ! e. a covalent group

The correct answer is: a functional group

Question 34

What level of protein structure is found in most enzymes and hemoglobin?

Correct Mark 2.50 out of 2.50

Select one: a. dipeptide b. primary c. tertiary d. quaternary ! e. secondary

The correct answer is: quaternary

Question 35 Correct

Why is sickle cell disease more common in Americans with African ancestors than Americans with European ancestors?

Mark 2.50 out of 2.50

Select one: a. Sickle-shaped blood cells caused malarial parasites to die, and thus gave protection against malarial infections prevalent in Africa ! b. Sickle-shaped blood cells were good hosts for tuberculosis, and thus spread tuberculosis widely throughout Africa

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c. Sickle-shaped blood cells caused cholera bacteria to die, and thus gave protection against large-scale cholera epidemics throughout Europe d. Sickle-shaped blood cells caused tuberculosis bacteria to die, and thus gave protection against largescale Tb epidemics throughout crowded areas in Africa e. Sickle-shaped blood cells were good hosts for cholera bacteria, and thus caused many people to die from cholera and diarrhea

The correct answer is: Sickle-shaped blood cells caused malarial parasites to die, and thus gave protection against malarial infections prevalent in Africa

Question 36

Which of the following levels of taxonomy comprises the fewest number of organisms?

Correct Mark 2.50 out of 2.50

Select one: a. Family b. Class c. Order d. Phylum e. Genus !

The correct answer is: Genus

Question 37

When ATP is broken down, it results in the release of _ (blank) _.

Correct Mark 2.50 out of 2.50

Select one: a. glucose b. friction c. nerve impulse d. muscle contraction e. energy !

The correct answer is: energy

Question 38 Correct

A molecule from a new organism contains adenine, cytosine, guanine, and thymine. What molecules is being looked at?

Mark 2.50 out of 2.50

Select one: a. DNA ! b. RNA c. lipid d. protein e. carbohydrate

The correct answer is: DNA http://gmc.mrooms3.net/mod/quiz/review.php?attempt=2718795&cmid=3963826#question-2793073-36

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The correct answer is: DNA

Question 39

When added to a carbon chain which functional group will convert it into an alcohol molecule?

Correct Mark 2.50 out of 2.50

Select one: a. sulfhydryl b. hydroxyl ! c. phosphate d. carboxyl e. carbonyl

The correct answer is: hydroxyl

Question 40

Which of the following is the largest number describing an atom?

Correct Mark 2.50 out of 2.50

Select one: a. Electron number b. Neutron number c. Atomic number d. Proton number e. Mass number !

The correct answer is: Mass number

◀ Week 2 Critical Thinking Exercise

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Exam 1 Essay Questions ▶︎

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