Q: Gene expression is the process of converting information from gene to cellular product. Which sequence correctly represents the flow of genetic information?

$$DNA \rightarrow RNA \rightarrow \text{Protein}$$

Question 1

Which of the following is NOT one of the eight characteristics shared by all living things?

Accepted Answer

They are capable of photosynthesis.

Question 2

Which unifying theme in biology explains how organisms interact with each other and their environment?

Accepted Answer

Interactions

Question 3

A scientist is studying a new organism and observes that it can reproduce, respond to stimuli, and maintain a stable internal environment. Which additional characteristic must the organism possess to be considered living according to biology’s criteria?

Accepted Answer

Possession of a genetic code

Question 4

Which statement best describes an emergent property in biological systems?

Accepted Answer

A property that arises from the arrangement and interaction of parts as complexity increases.

Question 5

Which of the following best illustrates the hierarchy of biological organization from smallest to largest?

Accepted Answer

Atoms, molecules, organelles, cells, tissues, organs, organisms, populations, communities, ecosystems, biosphere

Question 6

Which of the following is a difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have membrane-enclosed organelles and a nucleus.

Question 7

Gene expression is the process of converting information from gene to cellular product. Which sequence correctly represents the flow of genetic information?

Accepted Answer

$$DNA ightarrow RNA ightarrow 	ext{Protein}$$

Question 8

Which of the following is an essential element required by living organisms in large amounts?

Accepted Answer

Carbon

Question 9

Radioisotopes are used in medical imaging techniques such as PET scans. What property of radioisotopes makes them useful for this purpose?

Accepted Answer

They emit radiation that can be detected to track biological processes.

Question 10

Which subatomic particle determines the chemical behavior of an atom?

Accepted Answer

Electron

Question 11

What determines whether a covalent bond is polar or non-polar?

Accepted Answer

The difference in electronegativity between the atoms involved

Question 12

Which of the following best describes a hydrogen bond?

Accepted Answer

A weak interaction between a hydrogen atom covalently bonded to an electronegative atom and another electronegative atom

Question 13

Which scenario best demonstrates a Van der Waals interaction?

Accepted Answer

Temporary attractions between molecules due to fluctuating electron distributions

Question 14

A chemical reaction is represented as $$A + B \rightarrow C + D. $$Which are the reactants and which are the products?

Accepted Answer

Reactants: A and B; Products: C and D

Question 15

Which of the following best explains the role of evolution in unifying life on Earth?

Accepted Answer

All living organisms are modified descendants of common ancestors.

Question 16

In a controlled experiment, which variable is manipulated by the researcher?

Accepted Answer

Independent variable

Question 17

Which of the following is a compound?

Accepted Answer

Water ($$H_2O)$$

Question 18

Which property of water is primarily responsible for its ability to dissolve many substances?

Accepted Answer

Its polar covalent bonds and ability to form hydrogen bonds

Question 19

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

Accepted Answer

Essential elements are required in large amounts; trace elements are required in minute quantities.

General Biology: Foundations, Chemistry, and Biological Organization

Guida di studio - Domande di pratica

Study guide - Flashcard