Biology Forums - Study Force

Answer Key

Question 1 (Worth 5 points)

Organisms that obtain food by eating and digesting other organisms are:

a) heterotrophs
This is a correct answer

b) autotrophs

c) parasites

d) saprophytes

Question Information: Please review Chapter 1.

Points earned on this question: 5

Question 2 (Worth 5 points)

When an animal cell is placed in a hypotonic solution, the cell:

a) will shrink

b) will swell

c) may lyse

d) Both b and c
This is a correct answer

Question Information: Please review Chapter 5.

Points earned on this question: 5

Question 3 (Worth 5 points)

Organisms like plants and algae that perform photosynthesis are called:

a) producers
This is a correct answer

b) herbivores

c) consumers

d) decomposers

Question Information: Please review Chapter 1.

Points earned on this question: 5

Question 4 (Worth 5 points)

An important concept in biology is: “The whole is equal to more than the sum of its parts.” This idea is termed:

a) The theory of evolution

b) quantitative biology

c) emergent properties
This is a correct answer

d) properties of life

Question Information: Please review Chapter 1.

Points earned on this question: 5

Question 5 (Worth 5 points)

Which of these is a trait of a prokaryotic cell?

a) organized nucleus containing DNA

b) membrane bound organelles

c) chloroplasts for photosynthesis

d) nucleoid region with DNA
This is a correct answer

Question Information: Please review Chapter 5.

Points earned on this question: 5

Question 6 (Worth 5 points)

The most inclusive level of biological classification is the:

a) class

b) kingdom

c) domain
This is a correct answer

d) species

Question Information: Please review Chapter 1.

Points earned on this question: 5

Question 7 (Worth 5 points)

Two parents pass on their genes to offspring in:

a) asexual reproduction

b) sexual reproduction
This is a correct answer

c) mitosis

d) meiosis

Question Information: Please review Chapter 1.

Points earned on this question: 0

Question 8 (Worth 5 points)

The thinnest component of the cytoskeleton is the:

a) minifibers

b) microtubules

c) microfilaments
This is a correct answer

d) intermediate filaments

Question Information: Please review Chapter 5.

Points earned on this question: 5

Question 9 (Worth 5 points)

Which is an example of qualitative data?

a) The average plant height of 26.5 cm.

b) Eighteen of 25 plants showed nitrogen deficiency symptoms.

c) Plant leaves were brown on the edges and had yellow spots on them.
This is a correct answer

d) All of the above

Question Information: Please review Chapter 2.

Points earned on this question: 5

Question 10 (Worth 5 points)

Which nitrogen-containing base is not found in DNA?

a) cytosine

b) thymine

c) adenine

d) uracil
This is a correct answer

Question Information: Please review Chapter 9.

Points earned on this question: 5

Question 11 (Worth 5 points)

In research with human subjects, a controlled experiment is often called a(n):

a) peer reviewed experiment

b) planned intervention
This is a correct answer

c) ethical dilemma

d) double-blind study

Question Information: Please review Chapter 2.

Points earned on this question: 0

Question 12 (Worth 5 points)

Which of these cell parts is not paired correctly with its function?

a) nucleus---control center

b) ribosome---site of protein synthesis

c) plasma membrane---regulation of what passes in and out of cell

d) mitochondrion---site of photosynthesis
This is a correct answer

Question Information: Please review Chapter 5.

Points earned on this question: 5

Question 13 (Worth 5 points)

What kind of scientist tests hypotheses about prehistoric life by examining fossils?

a) anthropologist

b) paleontologist
This is a correct answer

c) psychologist

d) sociologist

Question Information: Please review Chapter 2.

Points earned on this question: 5

Question 14 (Worth 5 points)

What material coils and condenses to form chromosomes?

a) amino acids

b) RNA

c) chromatin
This is a correct answer

d) microtubules

Question Information: Please review Chapter 5.

Points earned on this question: 5

Question 15 (Worth 5 points)

When centrifuging a mixture, the lighter material in the solution on top is called the:

a) solute

b) debris

c) precipitate

d) supernatant
This is a correct answer

Question Information: Please review Chapter 9.

Points earned on this question: 5

Question 16 (Worth 5 points)

The phylum that contains animals with a backbone is:

a) Mammalia

b) Tamiasciurus

c) Brassica

d) Chordata
This is a correct answer

Question Information: Please review Chapter 1.

Points earned on this question: 5

Question 17 (Worth 5 points)

A tentative explanation of a phenomenon that guides inquiry is a(n):

a) prediction

b) theory

c) law

d) hypothesis
This is a correct answer

Question Information: Please review Chapter 2.

Points earned on this question: 5

Question 18 (Worth 5 points)

In a study of a new drug, the pill that resembles the drug but contains no medication is called the:

a) control

b) placebo
This is a correct answer

c) independent variable

d) dependent variable

Question Information: Please review Chapter 2.

Points earned on this question: 5

Question 19 (Worth 5 points)

Which statement is not true about a karyotype?

a) Chromosomes are arranged in matched pairs.

b) All eukaryotic karyotypes contain 46 chromosomes.
This is a correct answer

c) Chromosomes are linear in appearance.

d) Karyotypes can be used to screen for chromosome abnormalities.

Question Information: Please review Chapter 9.

Points earned on this question: 5

Question 20 (Worth 5 points)

The process of survival of the most reproductively fit organisms is called:

a) biogenesis

b) natural selection
This is a correct answer

c) adaptive radiation

d) speciation

Question Information: Please review Chapter 1.

Points earned on this question: 5

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