Question 1

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

Accepted Answer

Ability to photosynthesize

Question 2

Which domain of life contains organisms with DNA in a 'nucleoid region' and no nuclear envelope?

Accepted Answer

Bacteria

Question 3

A scientist observes that plants grow faster when exposed to blue light than red light. She proposes that blue light increases photosynthesis rates. What is her proposal called?

Accepted Answer

A hypothesis

Question 4

Which of the following best explains why water is considered a 'universal solvent'?

Accepted Answer

Its polar molecular structure allows it to dissolve more substances than any other liquid

Question 5

What happens to the pH of a solution when the concentration of $$[H^+]$$ increases?

Accepted Answer

The pH decreases

Question 6

Which of the following is a function of the plasma membrane in cells?

Accepted Answer

Regulates the flow of materials into and out of the cell

Question 7

Which organelles are part of the endomembrane system?

Accepted Answer

Nuclear envelope, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles

Question 8

Which macromolecule contains genetic information?

Accepted Answer

Nucleic acid (specifically DNA)

Question 9

What type of bond holds amino acids together in a protein?

Accepted Answer

Peptide bond

Question 10

Which of the following best describes the difference between saturated and unsaturated fatty acids?

Accepted Answer

Saturated fatty acids have no double bonds between carbons; unsaturated have one or more double bonds

Question 11

Which organelles have their own DNA and ribosomes, and why is this important?

Accepted Answer

Mitochondria and chloroplasts; they can grow and reproduce independently, maintaining unique functions

Question 12

Which of the following is a correct sequence from smallest to largest in biological organization?

Accepted Answer

Cell, tissue, organ, organ system

Question 13

Which of the following is a function of the cytoskeleton?

Accepted Answer

Provides structure and allows movement of the cell and its organelles

Question 14

Which of the following statements about buffers is correct?

Accepted Answer

Buffers maintain a constant pH by accepting H+ ions when they are in excess and donating H+ ions when they are depleted

Question 15

Which of the following is true about the primary structure of a protein?

Accepted Answer

It is the sequence of amino acids in a protein

Question 16

Which process involves the removal of a water molecule to link monomers together?

Accepted Answer

Dehydration synthesis

Question 17

Which of the following best explains why water resists rapid temperature change?

Accepted Answer

Water has a high specific heat capacity due to hydrogen bonds between molecules

Question 18

Which of the following is a correct statement about prokaryotic cells?

Accepted Answer

Their DNA is located in a nucleoid region

Question 19

Which of the following is a function of the nucleolus?

Accepted Answer

It is the site where ribosomes are assembled

Question 20

Which of the following best describes the role of ATP in cells?

Accepted Answer

ATP is the main source of energy for most cellular processes

General Biology Study Guide: Introduction to Life, Chemistry of Life, Macromolecules, and Cell Structure

Guida di studio - Domande di pratica

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