Question 1

Which of the following best describes an extremophile?

Accepted Answer

An organism that lives in conditions of extreme temperature, salinity, or acidity.

Question 2

Which statement correctly applies the concept of emergent properties in biology?

Accepted Answer

Emergent properties arise when the interaction of parts produces effects not predictable from the individual components.

Question 3

Which of the following is NOT a correct order of taxonomic classification from broadest to most specific?

Accepted Answer

Kingdom, Domain, Phylum, Class, Order, Family, Genus, Species

Question 4

Which of the following statements about cell theory is correct?

Accepted Answer

Cells arise only from pre-existing cells.

Question 5

A scientist observes that a plant grows faster in sunlight than in shade. Which step of the scientific method does this represent?

Accepted Answer

Making an observation

Question 6

Which subatomic particle has a negative charge and is found in the electron cloud surrounding the nucleus?

Accepted Answer

Electron

Question 7

What type of chemical bond is formed when electrons are shared between two atoms?

Accepted Answer

Covalent bond

Question 8

Which equation correctly represents the Gibbs free energy change ($\Delta G$) for a reaction?

Accepted Answer

$\Delta G = \Delta H - T\Delta S$

Question 9

Which property of water allows insects to walk on its surface?

Accepted Answer

Cohesion due to hydrogen bonding

Question 10

Which functional group is found in both amino acids and proteins and is responsible for their basic properties?

Accepted Answer

Amino group ($-NH_2$)

Question 11

Which process describes the breakdown of polymers into monomers by adding water?

Accepted Answer

Hydrolysis

Question 12

Which of the following is a correct comparison between DNA and RNA?

Accepted Answer

DNA is usually double-stranded, while RNA is usually single-stranded.

Question 13

Which statement best explains why enzymes are highly specific for their substrates?

Accepted Answer

The shape of the enzyme's active site matches only certain substrates.

Question 14

Which of the following factors does NOT affect enzyme activity?

Accepted Answer

Color of the enzyme

Question 15

Which property of phospholipids is essential for the formation of biological membranes?

Accepted Answer

They are amphipathic, having both hydrophilic and hydrophobic regions.

Question 16

Which type of transport requires energy input from the cell?

Accepted Answer

Active transport

Question 17

Which statement about prokaryotic and eukaryotic cells is correct?

Accepted Answer

Eukaryotic cells have a nucleus, while prokaryotic cells do not.

Question 18

Which of the following is a catabolic reaction?

Accepted Answer

Breakdown of glucose during cellular respiration

Question 19

Which of the following is a correct statement about hydrogen bonds?

Accepted Answer

They occur between a hydrogen atom covalently bonded to an electronegative atom and another electronegative atom.

Question 20

Which of the following best describes the role of buffers in biological systems?

Accepted Answer

Buffers maintain a stable pH by neutralizing excess acids or bases.

General Biology: Core Themes and Foundations Study Guide

Study Guide - Practice Questions