A localized group of organisms that belong to the same species is called a
A) biosystem
B) community
C) population
D) ecosystem
E) family

Answer: C

Organisms interact with their environments, exchanging matter and energy. For example, plant chloroplasts convert the energy of sunlight into
A) the energy of motion
B) carbon dioxide and water
C) the potential energy of chemical bonds
D) oxygen
E) kinetic energy

Answer: C

The main source of energy for producers in an ecosystem is
A) light energy
B) kinetic energy
C) thermal energy
D) chemical energy
E) ATP

Answer: A

Which of the following types of cells utilize deoxyribonucleic acid (DNA) as their genetic material but do not have their DNA encased within a nuclear envelope?
A) animal
B) plant
C) archaea
D) fungi
E) protists

Answer: C

To understand the chemical basis of inheritance, we must understand the molecular structure of DNA. This is an example of the application of which concept to the study of biology?
A) evolution
B) emergent properties
C) reductionism
D) the cell theory
E) feedback regulation

Answer: C

Once labor begins in childbirth, contractions increase in intensity and frequency until delivery. The increasing labor contractions of childbirth are an example of which type of regulation?
A) a bioinformatic system
B) positive feedback
C) negative feedback
D) feedback inhibition
E) enzymatic catalysis

Answer: B

What are archaea?
A) Prokaryotes characterized as extremophiles that share some bacterial and some eukaryotic traits.
B) Organisms that are adapted to high temperature environments, such as in volcanic springs.
C) Single-celled organisms that are killed by the application of antibiotics at certain concentrations.
D) Bacteria-like organisms that can live only in extreme salt environments.
E) Primitive protist-like creatures possessing fewer than two chromosomes per cell.

Answer: A