Question 1

Which of the following is NOT one of the seven attributes of life?

Accepted Answer

Ability to photosynthesize

Question 2

Which emergent property of water is MOST responsible for the movement of water from roots to leaves in plants?

Accepted Answer

Cohesion due to hydrogen bonding

Question 3

Which domain of life contains organisms with eukaryotic cells?

Accepted Answer

Eukarya

Question 4

A scientist observes a population of moths where darker-colored moths become more common after a forest fire. Which process is MOST likely responsible for this change?

Accepted Answer

Natural selection

Question 5

Which of the following is a correct comparison between ionic and covalent bonds?

Accepted Answer

Ionic bonds involve transfer of electrons; covalent bonds involve sharing of electrons.

Question 6

Which element is NOT one of the four most prevalent elements in the human body?

Accepted Answer

Calcium

Question 7

Given an atom with atomic number $$Z = 8$$ and mass number $$A = 18$$, how many neutrons does it have?

Accepted Answer

$$10$$

Question 8

Which of the following best describes the role of decomposers in an ecosystem?

Accepted Answer

They recycle nutrients by breaking down dead organic matter.

Question 9

Which functional group is present in all amino acids and is responsible for their acidic properties?

Accepted Answer

Carboxyl group

Question 10

Which property of water allows it to moderate temperature in living organisms?

Accepted Answer

High specific heat

Question 11

Which of the following is a correct description of a polar covalent bond?

Accepted Answer

Electrons are shared unequally, creating partial charges.

Question 12

Which macromolecule class includes enzymes and is responsible for catalyzing biochemical reactions?

Accepted Answer

Proteins

Question 13

Which of the following is a correct sequence for the levels of protein structure?

Accepted Answer

Primary, secondary, tertiary, quaternary

Question 14

Which process is responsible for breaking down macromolecules into their monomers?

Accepted Answer

Hydrolysis

Question 15

Which of the following best explains why carbon is central to biological molecules?

Accepted Answer

Carbon can form up to four covalent bonds, allowing for diverse structures.

Question 16

Which of the following is a correct formula for calculating the number of neutrons in an atom?

Accepted Answer

$$\mathrm{Number\ of\ neutrons} = A - Z$$

Question 17

Which of the following is a real-world example of a hydrogen bond?

Accepted Answer

Bond between water molecules in liquid water

Question 18

Which of the following statements about isotopes is TRUE?

Accepted Answer

Isotopes have the same number of protons but different numbers of neutrons.

Question 19

Which of the following best describes the function of phospholipids in biological membranes?

Accepted Answer

They form a bilayer that acts as a barrier to most water-soluble substances.

Question 20

A solution has a pH of 4. What is the concentration of hydrogen ions $$[H^+] in $$the solution?

Accepted Answer

$$1 	imes 10$$^{-4}$$\ \mathrm{M}$$

General Biology Study Guide: Life, Evolution, and Chemistry of Life

Guida di studio - Domande di pratica

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