Question 1

Which of the following best illustrates the concept of emergent properties in biological systems?

Accepted Answer

A collection of heart cells can pump blood, while a single heart cell cannot.

Question 2

Which of the following is NOT a property of all living things?

Accepted Answer

Ability to move from place to place

Question 3

A scientist is testing the effect of a new fertilizer on plant growth. She sets up two groups: one receives the fertilizer, and the other does not. What is the independent variable in this experiment?

Accepted Answer

The type of fertilizer used

Question 4

Which of the following statements about energy and matter in ecosystems is correct?

Accepted Answer

Energy flows through ecosystems, while matter cycles within them.

Question 5

Which of the following best describes the difference between negative and positive feedback regulation in biological systems?

Accepted Answer

Negative feedback reduces deviations from a set point, while positive feedback amplifies them.

Question 6

Which of the following is a correct application of the mass number equation for an atom with atomic number 8 and mass number 18?

Accepted Answer

Number of neutrons $$= 18 - 8 = 10$$

Question 7

Which of the following best explains why ice floats on liquid water?

Accepted Answer

Ice is less dense than liquid water because its hydrogen bonds are longer, creating an open lattice.

Question 8

Which of the following is a trace element essential for human health?

Accepted Answer

Iron

Question 9

Which of the following best describes the flow of genetic information in a cell?

Accepted Answer

DNA $$\rightarrow$$ RNA $$\rightarrow$$ Protein

Question 10

A molecule of water (H$$_2O) is $$held together by which type of bond, and what type of bond forms between two water molecules?

Accepted Answer

Covalent bond within the molecule; hydrogen bond between molecules

Question 11

Which of the following is a correct example of inductive reasoning in biology?

Accepted Answer

All observed swans are white; therefore, all swans are probably white.

Question 12

Which of the following best explains why carbon is so versatile as a building block for biological molecules?

Accepted Answer

Carbon can form up to four covalent bonds due to its four valence electrons.

Question 13

Which of the following statements about dehydration synthesis and hydrolysis is correct?

Accepted Answer

Dehydration synthesis joins monomers to form polymers by removing water.

Question 14

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

Accepted Answer

Unsaturated fats have at least one double bond in their fatty acid chains, causing kinks.

Question 15

Which of the following is a correct match between a macromolecule and its monomer?

Accepted Answer

Carbohydrate — Monosaccharide

Question 16

A patient is diagnosed with a genetic disorder caused by a single amino acid change in a protein. This change most directly affects which level of protein structure?

Accepted Answer

Primary structure

Question 17

Which of the following best explains why water is an excellent solvent for polar substances?

Accepted Answer

Water molecules form hydrogen bonds with polar molecules, surrounding and dissolving them.

Question 18

Which of the following is true about the domains of life?

Accepted Answer

Bacteria and Archaea are prokaryotic, while Eukarya is eukaryotic.

Question 19

A solution has a pH of 4. Which of the following statements is correct?

Accepted Answer

The solution is acidic and has a high concentration of H$$^+$$ ions.

Question 20

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

Accepted Answer

Buffers maintain pH stability by accepting or donating H$$^+$$ ions.

Unit 1 General Biology Study Guide: Foundations, Chemistry, Water, and Macromolecules

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드