Question 1

Which of the following best describes why red pandas were reclassified into their own family, separate from raccoons and giant pandas?

Accepted Answer

DNA sequence analysis revealed significant genetic differences from both raccoons and giant pandas.

Question 2

Which of the following statements about scientific theories is correct?

Accepted Answer

A scientific theory is a broad explanation supported by a large body of evidence.

Question 3

Darwin’s theory of evolution by natural selection primarily acts at which level of biological organization?

Accepted Answer

Population

Question 4

Which of the following is NOT one of the five unifying themes in biology?

Accepted Answer

Homeostasis as the only theme

Question 5

Which process best explains the increase in frequency of traits that enhance survival and reproductive success in a population?

Accepted Answer

Natural selection

Question 6

Which of the following best illustrates the concept of emergent properties?

Accepted Answer

A functioning bicycle assembled from individual parts

Question 7

Which of the following best describes the flow of energy in an ecosystem?

Accepted Answer

Energy flows in one direction, entering as sunlight and exiting as heat.

Question 8

Which of the following is a correct statement about the cycling of matter in an ecosystem?

Accepted Answer

Matter cycles from the atmosphere and soil through producers, consumers, and decomposers, then back to the environment.

Question 9

Which of the following best explains how DNA determines an organism’s structures and functions?

Accepted Answer

DNA provides the blueprint for proteins, which carry out cellular functions.

Question 10

Which of the following is an example of the relationship between structure and function at the molecular level?

Accepted Answer

The shape of hemoglobin allows it to transport oxygen in blood.

Question 11

Which of the following is NOT a property common to all life?

Accepted Answer

Unchanging, constant internal environment

Question 12

Which of the following levels of life’s hierarchy is NOT appropriate when referring to Archaea and Bacteria?

Accepted Answer

Organ level

Question 13

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

Accepted Answer

They return chemicals to the soil by breaking down dead organisms.

Question 14

Which of the following best describes the flow of information from DNA to protein?

Accepted Answer

DNA is transcribed to RNA, which is then translated into protein.

Question 15

Which of the following is an example of how structure supports function at the cellular level?

Accepted Answer

The long extensions of nerve cells enable them to transmit impulses over long distances.

Question 16

Which of the following best describes how systems biology is used to understand biological systems?

Accepted Answer

By analyzing the interactions among the parts of a system to model its behavior.

Question 17

Which of the following is a correct comparison between the three domains of life?

Accepted Answer

Bacteria and Archaea are both prokaryotic, while Eukarya includes all eukaryotic organisms.

Question 18

A scientist observes that a population of insects has developed resistance to a pesticide over several generations. Which biological concept best explains this observation?

Accepted Answer

Natural selection

Question 19

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

Accepted Answer

A hypothesis is a tentative explanation, while a theory is a broad explanation supported by evidence.

Question 20

Which of the following is an example of how information from the environment regulates body processes?

Accepted Answer

The pancreas releases insulin in response to high blood glucose levels.

Chapter 1: Exploring Life – Unifying Themes and the Scientific Method in Biology

Guida di studio - Domande di pratica

Study guide - Flashcard