Question 1

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

Accepted Answer

Ability to photosynthesize

Question 2

Which of the following best describes homeostasis?

Accepted Answer

The tendency of an organism to maintain a stable internal environment

Question 3

Which of the following is the correct order from smallest to largest: cell, tissue, organ, organ system?

Accepted Answer

Cell, tissue, organ, organ system

Question 4

Which domain includes organisms with cells that lack a nucleus?

Accepted Answer

Bacteria

Question 5

What is the main difference between a hypothesis and a scientific theory?

Accepted Answer

A hypothesis is an educated guess based on prior knowledge and observation, while a theory is an explanation supported by many observations and experiments

Question 6

Why is water considered a 'universal solvent'?

Accepted Answer

Because it can dissolve a wide variety of substances due to its polar nature

Question 7

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

Accepted Answer

The pH decreases

Question 8

Which of the following best describes a buffer in the human body?

Accepted Answer

A substance that prevents large changes in pH by accepting or donating $$H^+$$ ions

Question 9

Which type of bond is responsible for the three-dimensional shape of large biological molecules such as proteins?

Accepted Answer

Hydrogen bonds

Question 10

Which macromolecule contains genetic information?

Accepted Answer

Nucleic acids

Question 11

Which organelle is known as the 'powerhouse of the cell' and why?

Accepted Answer

Mitochondria, because it produces ATP from organic macromolecules

Question 12

Which organelles are part of the endomembrane system?

Accepted Answer

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

Question 13

Why is compartmentalization important in eukaryotic cells?

Accepted Answer

It increases efficiency and specialization by creating separate, membrane-bound organelles for specific functions

Question 14

Which of the following is a correct example of binomial nomenclature?

Accepted Answer

Homo sapiens

Question 15

Which of the following is NOT a function of proteins in cells?

Accepted Answer

Genetic information storage

Question 16

Which functional group is found in amino acids but not carbohydrates?

Accepted Answer

Amino group

Question 17

Which of the following best describes the secondary structure of a protein?

Accepted Answer

Regular repeating coiling and folding of a polypeptide backbone stabilized by hydrogen bonds

Question 18

Which of the following is a saturated fat?

Accepted Answer

A fat with no double bonds between carbon atoms

Question 19

Which organelle is responsible for assembling eukaryotic ribosomes?

Accepted Answer

Nucleolus

Question 20

Which of the following is a real-world example of natural selection?

Accepted Answer

The survival and reproduction of the fittest members of a population, allowing their genes to be passed on to future generations

Test one

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