Question 1

Which of the following best describes the concept of emergent properties in biology?

Accepted Answer

Properties that arise from the arrangement and interaction of parts within a system, which cannot be predicted by studying the individual parts alone.

Question 2

Which of the following correctly lists the levels of biological organization from smallest to largest?

Accepted Answer

Molecule, cell, tissue, organ, organism, population, community, ecosystem, biosphere

Question 3

Which feature distinguishes a prokaryotic cell from a eukaryotic cell?

Accepted Answer

Prokaryotic cells lack a membrane-bound nucleus.

Question 4

What is the primary role of photosynthesis for life on Earth?

Accepted Answer

To convert solar energy into chemical energy stored in glucose, providing food and energy for most living organisms.

Question 5

Which of the following is an example of negative feedback in biological systems?

Accepted Answer

High levels of ATP inhibit enzymes involved in cellular respiration, slowing further ATP production.

Question 6

Which scientist is credited with the theory of natural selection, and what is the name of his famous manuscript?

Accepted Answer

Charles Darwin; 'On the Origin of Species'

Question 7

Which of the following best explains why water is able to form hydrogen bonds with other molecules?

Accepted Answer

Water is a polar molecule, with partial positive charges on hydrogen atoms and a partial negative charge on the oxygen atom.

Question 8

Which of the following statements about isotopes is correct?

Accepted Answer

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

Question 9

What is the difference between a cation and an anion?

Accepted Answer

A cation is a positively charged ion, while an anion is a negatively charged ion.

Question 10

Which of the following best describes the difference between covalent and ionic bonds?

Accepted Answer

Covalent bonds involve the sharing of electron pairs between atoms, while ionic bonds involve the transfer of electrons from one atom to another.

Question 11

A molecule of water ($$\mathrm{H_2O}) is $$described as polar. What causes this polarity?

Accepted Answer

The unequal sharing of electrons between the more electronegative oxygen atom and the hydrogen atoms, resulting in partial charges.

Question 12

Which of the following best explains why ice is less dense than liquid water?

Accepted Answer

Hydrogen bonds in ice hold water molecules in a rigid lattice, keeping them further apart than in liquid water.

Question 13

Which of the following is a consequence of water's high specific heat for coastal climates?

Accepted Answer

Coastal climates experience milder temperature fluctuations compared to inland areas.

Question 14

Which of the following best describes the difference between an essential element and a trace element?

Accepted Answer

Essential elements are required by an organism in large amounts, while trace elements are required in very small amounts.

Question 15

Which of the following best explains why carbon is so important to life?

Accepted Answer

Carbon can form four covalent bonds, allowing it to build a wide variety of complex organic molecules.

Question 16

Which of the following is the correct way to write the scientific name for humans using binomial nomenclature when typed?

Accepted Answer

$$	extit{Homo sapiens}$$

Question 17

Which of the following best describes the role of ATP (adenosine triphosphate) in cells?

Accepted Answer

ATP stores and provides energy for many cellular processes by releasing a phosphate group.

Question 18

Which of the following is a real-world example of positive feedback in the human body?

Accepted Answer

Platelets releasing chemicals to attract more platelets to a wound site, forming a clot.

Question 19

Which of the following best describes the difference between cohesion and adhesion?

Accepted Answer

Cohesion is the attraction between molecules of the same substance, while adhesion is the attraction between molecules of different substances.

Question 20

Which of the following best explains why water is an excellent solvent for many biological molecules?

Accepted Answer

Water is polar, allowing it to dissolve other polar and ionic substances by surrounding them with hydration shells.

General Biology: Foundational Concepts and Principles

Guida di studio - Domande di pratica

Study guide - Flashcard