Question 1

Which of the following best describes an emergent property in biological systems?

Accepted Answer

A property that appears when individual components interact to form a more complex structure, such as consciousness arising from neural networks.

Question 2

Which of the following is the correct balanced chemical equation for the reaction between ammonia and sulfuric acid?

Accepted Answer

$$4\ NH_3$ + 5\ O_2$ \rightarrow 4\ NO + 6\ H_2O$$

Question 3

A scientist is testing the effect of a new fertilizer on plant growth. She sets up two groups: one receives the fertilizer, the other does not. Which group is the control group?

Accepted Answer

The group that does not receive the fertilizer.

Question 4

Which of the following statements about water is TRUE and explains why it is essential for life?

Accepted Answer

Water has a high specific heat, which helps stabilize temperature in organisms and environments.

Question 5

Which of the following best describes the difference between a hypothesis and a scientific theory?

Accepted Answer

A hypothesis is a specific, testable statement, while a scientific theory is a general explanation supported by a large body of evidence.

Question 6

Which of the following is the most electronegative element commonly found in organic molecules?

Accepted Answer

Oxygen

Question 7

A molecule of phosphorous has 15 electrons. How many electrons are in its outer valence shell?

Accepted Answer

5

Question 8

Which of the following best explains why ionic bonds are weaker than covalent bonds in water?

Accepted Answer

Water molecules disrupt ionic bonds by surrounding ions, reducing their attraction.

Question 9

Which of the following is NOT a characteristic shared by all living things?

Accepted Answer

Ability to photosynthesize

Question 10

In a graph showing the effect of light on mouse coat color, which variable is typically plotted on the y-axis?

Accepted Answer

Color of mouse coat

Question 11

Which of the following best describes the role of the independent variable in an experiment?

Accepted Answer

It is the variable that is manipulated by the researcher.

Question 12

Which of the following is an example of an isotope?

Accepted Answer

Carbon-12 and Carbon-14

Question 13

Which of the following is the correct order of biological organization from largest to smallest?

Accepted Answer

Biosphere, Ecosystem, Community, Population, Organism

Question 14

Which of the following statements about chemical reactions is TRUE?

Accepted Answer

Chemical reactions rearrange atoms but do not create or destroy them.

Question 15

Which of the following best explains why water is a good solvent for ionic compounds?

Accepted Answer

Water molecules surround ions, separating and stabilizing them due to their polarity.

Question 16

Which of the following is the correct electron shell configuration for the first three shells of an atom?

Accepted Answer

$$2, 8, 8$$

Question 17

Which of the following is TRUE about the process of science?

Accepted Answer

Science involves making observations, forming hypotheses, and testing predictions.

Question 18

Which of the following is the strongest type of chemical bond in water?

Accepted Answer

Covalent bond

Question 19

Which of the following best describes the unity of life according to Darwin's theory?

Accepted Answer

All organisms share common ancestry and traits such as DNA and ribosomes.

Question 20

Which of the following is a correct definition of a cation?

Accepted Answer

A positively charged ion

General Biology Study Guide: Life, Chemistry, Cells, and Membranes (Chapters 1-2)

Guida di studio - Domande di pratica

Study guide - Flashcard