Question 1

Which of the following best illustrates the theme of 'energy and matter' in biological systems?

Accepted Answer

The flow of sunlight energy through photosynthesis in plants, which is then transferred to animals that eat the plants.

Question 2

A scientist is studying how a population of bacteria responds to an antibiotic. Which biological theme is MOST directly involved when the bacteria develop resistance over several generations?

Accepted Answer

Evolution

Question 3

Which of the following scenarios best demonstrates the concept of 'feedback regulation' in a biological system?

Accepted Answer

A person sweating to cool down when their body temperature rises.

Question 4

Which statement best describes the relationship between DNA, RNA, and proteins in the transmission of genetic information?

Accepted Answer

DNA is transcribed into RNA, which is then translated into proteins.

Question 5

A researcher observes that all living organisms share certain characteristics, such as the use of DNA as genetic material. This observation best supports which biological theme?

Accepted Answer

Unity and diversity

Question 6

Which of the following is an example of a chemical interaction that is essential for life?

Accepted Answer

The formation of water molecules ($$2H_2 + O_2$ \rightarrow 2H_2O) $$during cellular respiration.

Question 7

In an ecosystem, which of the following best represents the flow of energy?

Accepted Answer

Energy enters as sunlight, is converted by producers, and eventually lost as heat.

Question 8

A mutation occurs in the DNA of a cell, leading to a change in the protein produced. Which process is directly affected by this mutation?

Accepted Answer

The transmission of genetic information from DNA to RNA to protein.

Question 9

Which of the following best describes the hierarchical organization of life from smallest to largest?

Accepted Answer

Molecule, cell, organism, ecosystem

Question 10

A patient is diagnosed with diabetes, a condition in which the body cannot properly regulate blood glucose levels. This is an example of a failure in which biological theme?

Accepted Answer

Feedback regulation

Question 11

Which of the following is an example of how evolution explains both the unity and diversity of life?

Accepted Answer

All organisms use ATP for energy, but different species have unique adaptations.

Question 12

Which process is responsible for the cycling of matter within an ecosystem?

Accepted Answer

Decomposition of organic material by bacteria and fungi.

Question 13

A scientist discovers a new organism that uses RNA as its genetic material instead of DNA. Which theme of biology does this discovery challenge?

Accepted Answer

Unity and diversity

Question 14

Which of the following best explains why feedback regulation is important in biological systems?

Accepted Answer

It allows organisms to maintain stable internal conditions despite external changes.

Question 15

Which of the following is an example of the application of the theme 'transmission of genetic information' in medicine?

Accepted Answer

Using gene therapy to treat inherited diseases by correcting faulty DNA sequences.

Question 16

A population of insects is exposed to a new pesticide. After several generations, most of the population is resistant to the pesticide. Which process best explains this outcome?

Accepted Answer

Natural selection

Question 17

Which of the following best describes the role of producers in an ecosystem?

Accepted Answer

They convert solar energy into chemical energy through photosynthesis.

Question 18

Which of the following scenarios demonstrates the importance of chemical interactions in maintaining life?

Accepted Answer

Hemoglobin binding to oxygen molecules in red blood cells.

Question 19

A biologist is studying how the removal of a top predator affects the populations of other species in an ecosystem. Which biological theme is MOST relevant to this study?

Accepted Answer

Ecosystem interactions

Question 20

Which of the following best illustrates the concept of hierarchical organization in biology?

Accepted Answer

A protein is made up of amino acids, which are made up of atoms.

Themes in Biology: Chapter 1 Study Notes (BIOL 110)

Study Guide - Practice Questions

Study Guide - Flashcards