Ch2 – Chemistry of Life | Complete Test Bank – 16th

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Human Biology, 16e (Mader)

Chapter 2 Chemistry of Life

1) The smallest unit of an element that still retains the chemical and physical properties of that element is called a(n)

A) isotope.

B) nucleus.

C) atom.

D) molecular bond.

E) neutrino.

Section: 02.01

Topic: Atomic Structure

Bloom's: 1. Remember

Learning Outcome: 02.01.01 Distinguish between atoms and elements.

Accessibility: Keyboard Navigation

2) In an atom, the number of protons always equals the number of

A) electrons.

B) neutrons.

C) neutrons and protons.

D) quarks.

E) neutrinos.

Section: 02.01

Topic: Atomic Structure

Bloom's: 1. Remember

Learning Outcome: 02.01.02 Describe the structure of an atom.

Accessibility: Keyboard Navigation

3) How many elements occur naturally?

A) 112

B) 92

C) 64

D) 32

E) 6

Section: 02.01

Topic: Atomic Structure

Bloom's: 1. Remember

Learning Outcome: 02.01.01 Distinguish between atoms and elements.

Accessibility: Keyboard Navigation

4) The atomic number of an atom is determined by the number of

A) protons.

B) neutrons.

C) electrons.

D) protons and neutrons.

E) protons and electrons.

Section: 02.01

Topic: Atomic Structure

Bloom's: 1. Remember

Learning Outcome: 02.01.02 Describe the structure of an atom.

Accessibility: Keyboard Navigation

5) An element cannot be broken down by chemical means.

Section: 02.01

Topic: Atomic Structure

Bloom's: 1. Remember

Learning Outcome: 02.01.01 Distinguish between atoms and elements.

Accessibility: Keyboard Navigation

6) Why is He positioned above Ne in the periodic table?  

A) They both have the same atomic mass.

B) They both have the same number of electrons in their outermost orbital.

C) They both have a full outermost orbital.  

D) They both have the same atomic number.

E) They both have the same number of protons in their nuclei.

Section: 02.01

Topic: Atomic Structure

Bloom's: 5. Evaluate

Learning Outcome: 02.01.02 Describe the structure of an atom.

Accessibility: Keyboard Navigation

7) Be has an atomic number of 4 and an atomic mass of 9. How many protons does it have?

A) 4

B) 5

C) 9

D) 13

E) 7

Section: 02.01

Topic: Atomic Structure

Bloom's: 2. Understand

Learning Outcome: 02.01.02 Describe the structure of an atom.

Accessibility: Keyboard Navigation

8) What is the symbol for sodium?

A) Na

B) S

C) So

D) N

E) Dm

Section: 02.01

Topic: Atomic Structure

Bloom's: 1. Remember

Learning Outcome: 02.01.01 Distinguish between atoms and elements.

Accessibility: Keyboard Navigation

9) Which of the following elements will have more than two electrons and have a full outer orbital?

A) He

B) Ne

C) C

D) N

E) O

Section: 02.01

Topic: Atomic Structure

Bloom's: 4. Analyze

Learning Outcome: 02.01.02 Describe the structure of an atom.

Accessibility: Keyboard Navigation

10) Isotopes of an element differ due to the number of

A) protons.

B) neutrons.

C) electrons.

D) both protons and electrons.

E) neutrinos.

Section: 02.01

Topic: Atomic Structure

Bloom's: 2. Understand

Learning Outcome: 02.01.03 Define an isotope and summarize its application in both medicine and biology.

Accessibility: Keyboard Navigation

11) Carbon dating is a common method employed in dating certain kinds of fossils. It is based on the radioactive decay of an isotope of carbon (C14). Referring to the atomic number of carbon attained from the periodic table, how many neutrons does C14 have?

A) 2

B) 4

C) 8

D) 12

E) 14

Section: 02.01

Topic: Atomic Structure

Bloom's: 3. Apply

Learning Outcome: 02.01.03 Define an isotope and summarize its application in both medicine and biology.

Accessibility: Keyboard Navigation

12) What substance is used in medicine to produce various images of organs and tissues?

A) a mixture

B) a tracer

C) an emulsion

D) a colloid

E) a sensor

Section: 02.01

Topic: Atomic Structure

Bloom's: 1. Remember

Learning Outcome: 02.01.03 Define an isotope and summarize its application in both medicine and biology.

Accessibility: Keyboard Navigation

13) Radiation can have both positive and negative impact on humans.

Section: 02.01

Topic: Atomic Structure

Bloom's: 2. Understand

Learning Outcome: 02.01.03 Define an isotope and summarize its application in both medicine and biology.

Accessibility: Keyboard Navigation

14) Two or more atoms joined together through the sharing of electrons are called a(n)

A) atomic unit.

B) molecule.

C) compound.

D) isotope.

E) ion.

Section: 02.01

Topic: Chemical Bonds

Bloom's: 1. Remember

Learning Outcome: 02.01.04 Distinguish between ionic and covalent bonds.

Accessibility: Keyboard Navigation

15) Ca3(PO4)2 represents a(n)

A) element.

B) mixture.

C) compound.

D) isotope.

E) atom.

Section: 02.01

Topic: Chemical Bonds

Bloom's: 2. Understand

Learning Outcome: 02.01.04 Distinguish between ionic and covalent bonds.

Accessibility: Keyboard Navigation

16) Atoms that share electrons have what type of bonds?

A) covalent

B) neutral

C) hydrogen

D) colloidal

E) ionic

Section: 02.01

Topic: Chemical Bonds

Bloom's: 1. Remember

Learning Outcome: 02.01.04 Distinguish between ionic and covalent bonds.

Accessibility: Keyboard Navigation

17) CaCl2 is a salt that forms as the result of what type of bond?

A) covalent

B) hydrogen

C) polar

D) nonpolar

E) ionic

Section: 02.01

Topic: Chemical Bonds

Bloom's: 2. Understand

Learning Outcome: 02.01.04 Distinguish between ionic and covalent bonds.

Accessibility: Keyboard Navigation

18) Water makes up 60–70% of total body weight.

Section: 02.02

Topic: Properties of Water

Bloom's: 1. Remember

Learning Outcome: 02.02.01 Describe the properties of water.

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19) Which type of bond is responsible for holding two water molecules together, creating the properties of water?

A) hydrogen

B) covalent

C) ionic

D) polar

E) double covalent

Section: 02.02

Topic: Chemical Bonds

Bloom's: 2. Understand

Learning Outcome: 02.02.02 Explain the role of hydrogen bonds in the properties of water.

Accessibility: Keyboard Navigation

20) Hydrogen bonds

A) result from the loss of neutrons by an atom.

B) result in the formation of salts.

C) involve the loss and gain of electrons.

D) involve the sharing of electrons.

E) are relatively weak and can be broken rather easily.

Section: 02.02

Topic: Chemical Bonds

Bloom's: 2. Understand

Learning Outcome: 02.02.01 Describe the properties of water.

Accessibility: Keyboard Navigation

21) The reason water is polar is because

A) in polar molecules atoms share electrons evenly.

B) the electrons spend more time circling the oxygen atom than the hydrogens.

C) hydrophilic molecules interact with water.

D) hydrophobic molecules do not interact with water.

E) there is a transfer of electrons from the hydrogen to the oxygen.

Section: 02.02

Topic: Properties of Water

Bloom's: 2. Understand

Learning Outcome: 02.02.01 Describe the properties of water.

Accessibility: Keyboard Navigation

22) Which of the following characteristics of water is most responsible for the sinking of the Titanic?

A) Water is liquid at room temperature.

B) Water has a high heat of vaporization.

C) The temperature of liquid water rises and falls slowly.

D) Frozen water is less dense than liquid water.

E) Water molecules are cohesive.

Section: 02.02

Topic: Properties of Water

Bloom's: 2. Understand

Learning Outcome: 02.02.01 Describe the properties of water.

Accessibility: Keyboard Navigation

23) On a warm day in April, Tina jumped into the swimming pool. To her surprise, the water was really cold. Which property of water did she discover?

A) Water molecules are cohesive.

B) The temperature of liquid water rises and falls slowly.

C) Water possesses hydrogen bonds.

D) Water is a polar molecule.

E) Frozen water is less dense than liquid water.

Section: 02.02

Topic: Properties of Water

Bloom's: 4. Analyze

Learning Outcome: 02.02.01 Describe the properties of water.

Accessibility: Keyboard Navigation

24) William noticed water mysteriously climbing up a capillary tube. This is an example of which property of water?

A) Frozen water is less dense than liquid water.

B) The temperature of liquid water rises and falls slowly.

C) Water molecules are cohesive.

D) Water has a high heat of vaporization.

E) Water is a solvent.

Section: 02.02

Topic: Properties of Water

Bloom's: 3. Apply

Learning Outcome: 02.02.01 Describe the properties of water.

Accessibility: Keyboard Navigation

25) In an acidic solution, the number of H+ is

A) less than the number of OH-.

B) greater than the number of OH-.

C) equal to the number of OH-.

D) 3 times less than the number of OH-.

E) 10 times less than the number of OH-.

Section: 02.02

Topic: Acids and Bases

Bloom's: 2. Understand

Learning Outcome: 02.02.03 Summarize the structure of the pH scale and the importance of buffers to biological systems.

Accessibility: Keyboard Navigation

26) A solution with a pH of 7 has 10 times as many H+ as a pH of 6.

Section: 02.02

Topic: Acids and Bases

Bloom's: 2. Understand

Learning Outcome: 02.02.03 Summarize the structure of the pH scale and the importance of buffers to biological systems.

Accessibility: Keyboard Navigation

27) A solution containing 0.00001 moles of H+ has a pH of

A) 3.

B) 5.

C) 7.

D) 9.

E) 11.

Section: 02.02

Topic: Acids and Bases

Bloom's: 4. Analyze

Learning Outcome: 02.02.03 Summarize the structure of the pH scale and the importance of buffers to biological systems.

Accessibility: Keyboard Navigation

28) The presence of a buffer in our blood helps maintain homeostasis.

Section: 02.02

Topic: Acids and Bases

Bloom's: 3. Apply

Learning Outcome: 02.02.03 Summarize the structure of the pH scale and the importance of buffers to biological systems.

Accessibility: Keyboard Navigation

29) Joining small molecules (monomers) together to form longer chains (polymers) requires a process called

A) a hydrolysis reaction.

B) a dehydration reaction.

C) monomerization.

D) emulsification.

E) disassembly.

Section: 02.03

Topic: Chemical Reactions

Bloom's: 1. Remember

Learning Outcome: 02.03.02 Describe the processes by which the organic molecules are assembled and disassembled.

Accessibility: Keyboard Navigation

30) Which of the following is one of the four classes of organic molecules found in cells?

A) vitamins

B) lipids

C) nutrients

D) minerals

E) nuclei

Section: 02.03

Topic: Chemical Reactions

Bloom's: 2. Understand

Learning Outcome: 02.03.01 List the four classes of organic molecules found in cells.

Accessibility: Keyboard Navigation

31) In biology, calling something organic means that it was grown without the use of any type of herbicide.

Section: 02.03

Topic: Chemical Reactions

Bloom's: 1. Remember

Learning Outcome: 02.03.01 List the four classes of organic molecules found in cells.

Accessibility: Keyboard Navigation

32) NaCl is not an organic molecule.

Section: 02.03

Topic: Chemical Reactions

Bloom's: 2. Understand

Learning Outcome: 02.03.01 List the four classes of organic molecules found in cells.

Accessibility: Keyboard Navigation

33) After lunch, our digestive system will use the process of hydrolysis to break the food down into smaller subunits.

Section: 02.03

Topic: Chemical Reactions

Bloom's: 1. Remember

Learning Outcome: 02.03.02 Describe the processes by which the organic molecules are assembled and disassembled.

Accessibility: Keyboard Navigation

34) A hydrolysis reaction involves the loss of water.

Section: 02.03

Topic: Chemical Reactions

Bloom's: 2. Understand

Learning Outcome: 02.03.02 Describe the processes by which the organic molecules are assembled and disassembled.

Accessibility: Keyboard Navigation

35) Which grouping of elements is found in carbohydrates?

A) C - H - O

B) C - H - P

C) H - O - Cl

D) N - S - O

E) Ca - H - O

Section: 02.04

Topic: Carbohydrates

Bloom's: 1. Remember

Learning Outcome: 02.04.01 Summarize the basic chemical properties of a carbohydrate.

Accessibility: Keyboard Navigation

36) Sugars with three to seven carbon atoms are called

A) monosaccharides.

B) disaccharides.

C) trisaccharides.

D) polysaccharides.

E) steroids.

Section: 02.04

Topic: Carbohydrates

Bloom's: 1. Remember

Learning Outcome: 02.04.01 Summarize the basic chemical properties of a carbohydrate.

Accessibility: Keyboard Navigation

37) A potato stores a reserve of energy in its underground tuber in the form of

A) glycogen.

B) fat.

C) protein.

D) vitamins.

E) starch.

Section: 02.04

Topic: Carbohydrates

Bloom's: 5. Evaluate

Learning Outcome: 02.04.03 Compare the structures of simple and complex carbohydrates.

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38) Which of the following is a monosaccharide?

A) glucose

B) sucrose

C) lactose

D) maltose

E) None of these is a monosaccharide.

Section: 02.04

Topic: Carbohydrates

Bloom's: 1. Remember

Learning Outcome: 02.04.03 Compare the structures of simple and complex carbohydrates.

Accessibility: Keyboard Navigation

39) Which polysaccharide is stored as an energy source in the body of animals?

A) glycogen

B) glucose

C) cellulose

D) starch

E) chitin

Section: 02.04

Topic: Carbohydrates

Bloom's: 2. Understand

Learning Outcome: 02.04.03 Compare the structures of simple and complex carbohydrates.

Accessibility: Keyboard Navigation

40) What passes through the digestive tract as fiber or roughage?

A) maltose

B) glucose

C) glycogen

D) starch

E) cellulose

Section: 02.04

Topic: Carbohydrates

Bloom's: 1. Remember

Learning Outcome: 02.04.04 Explain the importance of fiber in the diet.

Accessibility: Keyboard Navigation

41) Which of the following foods would be a good source of fiber?

A) peaches

B) whole-wheat bread

C) peanuts

D) bran cereal

E) All of the answer choices are good sources of fiber.

Section: 02.04

Topic: Carbohydrates

Bloom's: 2. Understand

Learning Outcome: 02.04.04 Explain the importance of fiber in the diet.

Accessibility: Keyboard Navigation

42) Which polysaccharide is branched the most?

A) cellulose

B) starch

C) glycogen

D) glucose

E) fructose

Section: 02.04

Topic: Carbohydrates

Bloom's: 4. Analyze

Learning Outcome: 02.04.03 Compare the structures of simple and complex carbohydrates.

Accessibility: Keyboard Navigation

43) Which polysaccharide is consumed as a source of fiber?

A) cellulose

B) glycogen

C) glucose

D) chitin

E) starch

Section: 02.04

Topic: Carbohydrates

Bloom's: 3. Apply

Learning Outcome: 02.04.04 Explain the importance of fiber in the diet.

Accessibility: Keyboard Navigation

44) The main function of carbohydrates is for long-term energy storage.

Section: 02.04

Topic: Carbohydrates

Bloom's: 2. Understand

Learning Outcome: 02.04.02 State the roles of carbohydrates in human physiology.

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45) Our body is capable of converting starch into glycogen.

Section: 02.04

Topic: Carbohydrates

Bloom's: 3. Apply

Learning Outcome: 02.04.02 State the roles of carbohydrates in human physiology.

Accessibility: Keyboard Navigation

46) Starch, cellulose, and glycogen are alike in that they

A) are all made of glucose.

B) contain the same number of side chains.

C) have the same types of bonds between the monomer units.

D) are all found in animals.

E) can all be digested by our bodies.

Section: 02.04

Topic: Carbohydrates

Bloom's: 2. Understand

Learning Outcome: 02.04.03 Compare the structures of simple and complex carbohydrates.

Accessibility: Keyboard Navigation

47) A fat contains how many fatty acids?

A) 1

B) 2

C) 3

D) 4

E) 5

Section: 02.05

Topic: Lipids

Bloom's: 2. Understand

Learning Outcome: 02.05.01 Compare the structures of fats, phospholipids, and steroids.

Accessibility: Keyboard Navigation

48) How are fats, phospholipids, and steroids alike?

A) They are all solid at room temperature.

B) They each contain a polar phosphate group.

C) They each contain only one fatty acid.

D) They do not dissolve in water.

E) They all contain at least one carbon ring.

Section: 02.05

Topic: Lipids

Bloom's: 4. Analyze

Learning Outcome: 02.05.01 Compare the structures of fats, phospholipids, and steroids.

Accessibility: Keyboard Navigation

49) A fatty acid that contains only single bonds between the carbon atoms is considered

A) saturated.

B) unsaturated.

C) trans unsaturated.  

D) a cholesterol.

E) a steroid.

Section: 02.05

Topic: Lipids

Bloom's: 2. Understand

Learning Outcome: 02.05.01 Compare the structures of fats, phospholipids, and steroids.

Accessibility: Keyboard Navigation

50) Fats are usually of animal origin, while oils are usually of plant origin.

Section: 02.05

Topic: Lipids

Bloom's: 1. Remember

Learning Outcome: 02.05.01 Compare the structures of fats, phospholipids, and steroids.

Accessibility: Keyboard Navigation

51) The sex hormones belong to which category of lipids?

A) steroids

B) fats

C) oils

D) triglycerides

E) phospholipids

Section: 02.05

Topic: Lipids

Bloom's: 2. Understand

Learning Outcome: 02.05.02 State the function of each class of lipids.

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52) The membranes of cells are composed primarily of

A) phospholipids.

B) fats.

C) oils.

D) steroids.

E) triglycerides.

Section: 02.05

Topic: Lipids

Bloom's: 2. Understand

Learning Outcome: 02.05.02 State the function of each class of lipids.

Accessibility: Keyboard Navigation

53) Fats and oils function better than other biological molecules as energy-storage molecules because of the carbon they contain.

Section: 02.05

Topic: Lipids

Bloom's: 3. Apply

Learning Outcome: 02.05.02 State the function of each class of lipids.

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54) The monomer unit of a protein is

A) fatty acids.

B) amino acids.

C) monosaccharides.

D) polysaccharides.

E) nucleic acids.

Section: 02.06

Topic: Proteins

Bloom's: 1. Remember

Learning Outcome: 02.06.02 Explain how amino acids are combined to form proteins.

Accessibility: Keyboard Navigation

55) What makes each amino acid unique?

A) the central carbon

B) the R group

C) the amino group

D) the carboxyl group

E) the carbon ring

Section: 02.06

Topic: Proteins

Bloom's: 2. Understand

Learning Outcome: 02.06.01 Describe the structure of an amino acid.

Accessibility: Keyboard Navigation

56) Which of the following is a function of proteins?

A) quick energy

B) genetic material

C) main component of the cell membrane 

D) enzymes

E) digest cell waste

Section: 02.06

Topic: Proteins

Bloom's: 2. Understand

Learning Outcome: 02.06.01 Describe the structure of an amino acid.

Accessibility: Keyboard Navigation

57) Why does a protein not function after it has been denatured?

A) The normal bonding between the R groups has been disturbed and the protein loses its normal shape.

B) The normal bonding between the beta sheets has been disturbed and the protein loses its normal shape.

C) The normal bonding between the hydrogens in the alpha helix has been disturbed and the protein loses its normal shape.

D) The R groups form additional bonds, causing the structure to become more compact.

E) The normal peptide bonds are ruptured and the individual amino acids are not held together anymore.

Section: 02.06

Topic: Proteins

Bloom's: 5. Evaluate

Learning Outcome: 02.06.03 Summarize the four levels of protein structure.

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58) An alpha helix or a beta sheet are examples of what level of protein structure?

A) secondary

B) primary

C) tertiary

D) quaternary

E) octagon

Section: 02.06

Topic: Proteins

Bloom's: 2. Understand

Learning Outcome: 02.06.03 Summarize the four levels of protein structure.

Accessibility: Keyboard Navigation

59) Which level of protein structure is characterized by alpha and beta sheets in which hydrogen bonding holds the shape in place?

A) secondary structure

B) primary structure

C) tertiary structure

D) quaternary structure

E) pentagonal structure

Section: 02.06

Topic: Proteins

Bloom's: 4. Analyze

Learning Outcome: 02.06.03 Summarize the four levels of protein structure.

Accessibility: Keyboard Navigation

60) When two amino acids combine via a dehydration reaction

A) a peptide bond is formed.

B) the R groups are lost.

C) water is added to begin the reaction.

D) the carboxyl group of each join together.

E) the amino group of each join together.

Section: 02.06

Topic: Proteins

Bloom's: 3. Apply

Learning Outcome: 02.06.02 Explain how amino acids are combined to form proteins.

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61) The primary level of protein structure is composed of amino acids in a linear sequence joined by peptide bonds.

Section: 02.06

Topic: Proteins

Bloom's: 1. Remember

Learning Outcome: 02.06.03 Summarize the four levels of protein structure.

Accessibility: Keyboard Navigation

62) All amino acids are alike in that their R groups are polar.

Section: 02.06

Topic: Proteins

Bloom's: 2. Understand

Learning Outcome: 02.06.01 Describe the structure of an amino acid.

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63) The sides of the DNA ladder (backbone) are

A) alternating carbons and nitrogens.

B) the R groups.

C) the nitrogenous bases.

D) alternating nitrogens and phosphates.

E) sugars and phosphates.

Section: 02.07

Topic: Nucleic Acids

Bloom's: 1. Remember

Learning Outcome: 02.07.01 Explain the differences between RNA and DNA.

Accessibility: Keyboard Navigation

64) When an ATP molecule is used to supply energy, which of the following occurs?

A) A phosphate bond is added.

B) A phosphate bond is broken.

C) Oxygen is removed.

D) Oxygen is added.

E) An adenine is added.

Section: 02.07

Topic: Nucleic Acids

Bloom's: 2. Understand

Learning Outcome: 02.07.02 Summarize the role of ATP in cellular reactions.

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65) Which of the following nitrogenous bases is found in DNA?

A) cytosine

B) phosphorous 

C) uracil

D) guanasine

E) ribonucleic acid

Section: 02.07

Topic: Nucleic Acids

Bloom's: 1. Remember

Learning Outcome: 02.07.01 Explain the differences between RNA and DNA.

Accessibility: Keyboard Navigation

66) Which of the following is a feature of a nucleotide?

A) potassium 

B) nitrogenous base

C) six-ring sugar

D) an R group

E) a fatty acid

Section: 02.07

Topic: Nucleic Acids

Bloom's: 2. Understand

Learning Outcome: 02.07.01 Explain the differences between RNA and DNA.

Accessibility: Keyboard Navigation

67) A species has 29% of its DNA composed of the nucleotide containing guanine (G). What percent does the nitrogen base thymine (T) equal?

A) 58%

B) 42%

C) 21%

D) 67%

E) 29%

Section: 02.07

Topic: Nucleic Acids

Bloom's: 4. Analyze

Learning Outcome: 02.07.01 Explain the differences between RNA and DNA.

Accessibility: Keyboard Navigation

68) ATP carries energy in the form of high-energy

A) carbohydrate bonds.

B) peptide bonds.

C) lipid bonds.

D) phosphate bonds.

E) hydrogen bonds.

Section: 02.07

Topic: Nucleic Acids

Bloom's: 1. Remember

Learning Outcome: 02.07.02 Summarize the role of ATP in cellular reactions.

Accessibility: Keyboard Navigation

69) The function of RNA in the body is to store the genetic information in the nucleus.

Section: 02.07

Topic: Nucleic Acids

Bloom's: 1. Remember

Learning Outcome: 02.07.01 Explain the differences between RNA and DNA.

Accessibility: Keyboard Navigation

70) ATP is called the energy currency of the body because it is a type of electricity.

Section: 02.07

Topic: Nucleic Acids

Bloom's: 4. Analyze

Learning Outcome: 02.07.02 Summarize the role of ATP in cellular reactions.

Accessibility: Keyboard Navigation

71) List the functions of proteins.

1. support

2. enzymes that bring reactants together in chemical reactions

3. transport of substance through the cell membrane and within the cell

4. defense of the body from foreign substances

5. hormones that serve as intercellular messengers

6. motion of the body

Section: 02.06

Topic: Proteins

Bloom's: 6. Create

Learning Outcome: 02.06.02 Explain how amino acids are combined to form proteins.

Accessibility: Keyboard Navigation

72) List the properties of water.

2. Water has a high heat of evaporation.

3. Water is a solvent.

4. Water molecules are cohesive and adhesive.

5. Frozen water is less dense than liquid water. 

Section: 02.02

Topic: Properties of Water

Bloom's: 6. Create

Learning Outcome: 02.02.01 Describe the properties of water.

Accessibility: Keyboard Navigation

73) Describe the structure and function of the DNA molecule.

Section: 02.07

Topic: Nucleic Acids

Bloom's: 6. Create

Learning Outcome: 02.07.01 Explain the differences between RNA and DNA.

Accessibility: Keyboard Navigation