Question 1

Which of the following is NOT considered a characteristic of life?

Accepted Answer

Ability to form covalent bonds

Question 2

A scientist observes that all ants in a colony find food efficiently, even though no single ant knows the location of all food sources. This is best explained by:

Accepted Answer

Emergent properties, because the group behavior arises from interactions among individuals

Question 3

Which of the following best describes the difference between a hypothesis and a theory in science?

Accepted Answer

A theory is generally an explanation for a more general phenomenon, while a hypothesis addresses more specific issues

Question 4

Which of the following bonds is responsible for the high surface tension of water?

Accepted Answer

Hydrogen bonds

Question 5

If a solution has a pH of 4, what is the concentration of hydrogen ions $$[H^+] in $$moles per liter?

Accepted Answer

$$1 	imes 10$$^{-4}$$

Question 6

Which property of water allows ice to float on liquid water?

Accepted Answer

Water molecules in ice are locked into a crystalline lattice that keeps them farther apart

Question 7

Which of the following statements about saturated and unsaturated fatty acids is correct?

Accepted Answer

Unsaturated fatty acids have fewer hydrogen atoms than saturated fatty acids

Question 8

A dehydration reaction is important in the synthesis of which biological macromolecule?

Accepted Answer

Polymers such as proteins and polysaccharides

Question 9

Which of the following best explains why water has a high specific heat?

Accepted Answer

Hydrogen bonds between water molecules require more energy to break

Question 10

Which of the following is true about the structure of DNA?

Accepted Answer

DNA is a polymer of nucleotides linked by phosphodiester bonds

Question 11

A protein loses its function after being exposed to high temperature. This is most likely due to:

Accepted Answer

Denaturation, which disrupts its three-dimensional structure

Question 12

Which of the following is a correct example of inductive reasoning?

Accepted Answer

Using specific observations to construct a general set of principles

Question 13

Which of the following is a function of hemoglobin in red blood cells?

Accepted Answer

Transporting oxygen from the lungs to other parts of the body

Question 14

Which of the following best describes the difference between testosterone and estrogen?

Accepted Answer

They have the same steroid backbone but have different functional groups and functions

Question 15

Which of the following is true about phospholipids in biological membranes?

Accepted Answer

They are amphipathic molecules with hydrophilic heads and hydrophobic tails

Question 16

Which of the following is a storage polysaccharide found in animals?

Accepted Answer

Glycogen

Question 17

Which of the following statements about protein structure is correct?

Accepted Answer

Primary structure is determined by the sequence of amino acids

Question 18

If 18 glucose monomers are joined together to form a starch molecule, how many water molecules are released during the polymerization process?

Accepted Answer

$$17$$

Question 19

Which element would be most chemically inert because it has a completely filled valence shell?

Accepted Answer

Neon

Question 20

Beaker 1 contains water and Beaker 2 contains ethanol. Both receive the same amount of heat per minute. Which statement best describes what happens?

Accepted Answer

Water heats slower because it has stronger intermolecular attractions (hydrogen bonds)

General Biology Exam 1 Review: Characteristics of Life, Scientific Reasoning, and Evolutionary Mechanisms

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