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Quiz Session - Attempts With Random Questions

College Biology Exam Questions

Page 6 of 100

101.

The radius of a circle is 10 inches. Approximately, what is its diameter in centimeters?

  • 50 cm

  • 25 cm

  • 40 cm

  • 55 cm

Correct answer: 50 cm

Find the circumference.
The circumference of a circle is twice the radius, which in this case gives 2⋅10 inches (in) = 20 in.

Convert to centimeters.
Since 1 in is approximately 2.5 centimeters (cm), we can use a unit conversion fraction:
20 in × 2.5 cm/1 in = 50 cm.

102.

Solve:

-4|x - 2| = - 24

  • -4, 8

  • -8

  • 3

  • -4, 4

Correct answer: -4, 8

  1. Divide by -4.
    It is easier if the absolute value expression is isolated, so divide both sides by -4
    -4|x-2| = -24
    |x-2| = -24/-4 = 6
  2. Eliminate the absolute value bars.
    If |x-2| = 6, x-2 is ±6, so the two equations are
    x-2 = 6 and x - 2 = -6.
  3. Solve the first equation.
    x-2 = 6
    x-2+2 = 6+2
    x = 8
  4. Solve the second equation.
    x-2 = -6
    x-2+2 = -6+2
    x = -4

103.

What type of reasoning moves from specific observations to general theories?

  • Inductive reasoning

  • Deductive reasoning

  • Abductive reasoning

  • Causal reasoning

Correct answer: Inductive reasoning

Inductive reasoning is a type of reasoning that moves from specific observations to general theories. It is based on the idea that if a certain pattern of events occurs repeatedly, then it is likely that the pattern will continue in the future.

104.

Identify the part of speech of before in the following sentence.

A tiger will study his prey before it attacks.

  • Conjunction

  • Pronoun

  • Verb

  • Adverb

Correct answer: Conjunction

Before can be used as a conjunction to connect two clauses, a preposition when followed by a noun, and an adverb without a following noun. In this sentence, before is used as a conjunction because it connects the clause A tiger will study his prey with the clause it attacks.

A pronoun is a word used in place of a noun (i.e., it). A verb expresses action (i.e., study). An adverb modifies a verb, adjective, or another adverb.

105.

DNA contains four nitrogenous bases that form hydrogen bonds with another base. What base does adenine (A) bond with?

  • Thymine

  • Guanine

  • Cytosine

  • Uracil

Correct answer: Thymine

The adenine nitrogenous base bonds with the thymine nitrogenous base.

Deoxyribonucleic acid (DNA) is a macromolecule that contains coded instructions for the body to produce proteins. It is composed of four nucleotide letters: A (adenine), T (thymine), G (guanine), and C (cytosine).

These nucleotides are arranged in three-letter combinations to make 64 possible "words" called codons. A gene is a "sentence" made of a specific order of codons that produces a protein. Each codon specifies one amino acid and these codons instruct ribosomes to assemble the amino acids in a particular order. A chromosome is a structure made of protein and one molecule of DNA. Chromosomes regulate where a gene starts and ends and which genes are read in a cell.

The relationships between the bases are always constant. Adenine and thymine always bond (A-T) and guanine and cytosine always bond (G-C). Thus, A-T and G-C are referred to as complementary bases. Adenine will bind to Uracil only in RNA.

106.

Which of the following is an example of personification?

  • The trees whistled in the wind.

  • Your words are music to my ears.

  • The football player is like a rock.

  • The surgeon’s hands are as steady as a 50-year marriage.

Correct answer: The trees whistled in the wind.

An example of personification is: The trees whistled in the wind. Personification is giving a human attribute to something nonhuman. Personification is a figurative device.

The football player is like a rock and The surgeon’s hands are as steady as a 50-year marriage are examples of similes. A simile is a comparison between two unlike objects using the words like or as. A simile is a figurative device. Your words are music to my ears is an example of a metaphor. A metaphor is a comparison between unlike objects without using the words like or as. A metaphor is a figurative device.

107.

Which of the following sentences is punctuated correctly?

  • Whenever I see her at a restaurant, she inevitably is eating a vegetable salad.

  • Whenever I see her at a restaurant she inevitably is eating a vegetable salad.

  • Whenever I see her, at a restaurant, she inevitably is eating a vegetable salad.

  • Whenever I see her at a restaurant; she inevitably is eating a vegetable salad.

Correct answer: Whenever I see her at a restaurant, she inevitably is eating a vegetable salad.

The correctly punctuated sentence is: Whenever I see her at a restaurant, she inevitably is eating a vegetable salad. The subordinating conjunction whenever defines the first clause as dependent. In a complex sentence (dependent clause + independent clause), the use of a comma is required after a dependent clause (Whenever I see her at a restaurant) when the dependent clause comes first. This follows the rule that a comma comes after any phrase or clause that precedes the sentence's main subject.

A semicolon is not accurate; it would be used between two independent clauses, not a dependent and an independent clause.

108.

The exchange of gases with the external environment, known as external respiration, occurs in the:

  • Alveoli

  • Tissues

  • Bronchioles

  • Nasal passages

Correct answer: Alveoli

External respiration is the exchange of gases with the external environment and takes place in the alveoli. During external respiration deoxygenated blood enters the lungs via the pulmonary artery, which branches into a network of pulmonary capillaries that surround the alveoli. As blood moves through the capillaries, red blood cells take up oxygen from the inhaled air and carbon dioxide diffuses from the blood into the alveolar space to be exhaled.

109.

If the sides of a rectangle are x+2 and 3x+1, what is the perimeter of the rectangle?

  • 8x+6

  • 4x+3

  • 16x+12

  • 6x+3

Correct answer: 8x+6

The perimeter of a rectangle is 2×Length + 2×Width, which in this case gives 2⋅(x+2)+2⋅(3x+1) = 2x+4+6x+2 = 8x+6.

110.

Which of the following parts of a cell is responsible for the synthesis of lipids and hormones?

  • Smooth endoplasmic reticulum

  • Rough endoplasmic reticulum

  • Golgi apparatus

  • Lysosome

Correct answer: Smooth endoplasmic reticulum

The smooth endoplasmic reticulum (SER) function involves manufacturing and packaging, including the synthesis of lipids and hormones which are used for the production of new cellular membranes.

The rough endoplasmic reticulum (RER) function involves the assembly of proteins and the transportation of those assembled ready proteins to where they will be used by the body.

The Golgi apparatus functions as an organelle found within the cells of the majority of eukaryotic organisms. The Golgi body is found within the cytoplasm of the cell and is part of the endomembrane system. The Golgi apparatus is sometimes referred to as the “post office of the cell” and it is responsible for packaging proteins into vesicles and sending them out to the correct destinations within the cell, where the proteins are used to carry out the requisite cellular functions.

The function of lysosomes is to remove waste as well as destroying a cell after it has died, called autolysis. A lysosome is an organelle containing digestive enzymes which it uses to function as the digestion and waste removal for cells, food particles, bacteria, etc.

111.

Identify the most likely genre for the following sentence.

I stand here today thinking how fast the last 13 years have gone and how those 13 years have molded us into who we are today and who we will become in the future.

  • Speech

  • Science report

  • News story

  • Essay

Correct answer: Speech

A genre is a composition characterized by a particular style, form, or content.

The language in the sentence (I stand here today) represents language that would be delivered during a speech addressing a group of individuals. A speech is a formal address delivered to an audience.

Science report is incorrect because the sentence does not describe the process, progress, and/or results of technical or scientific research. News story is incorrect because the sentence does not describe a factual story about a person, place, or event. Essay is incorrect because the sentence does not present a piece of writing that analyzes or evaluates a particular topic.

112.

A chemical that elicits a response in the same cell that secreted it is called a/n:

  • Autocrine

  • Exocrine

  • Eucrine

  • Paracrine

Correct answer: Autocrine

An autocrine is a chemical that elicits a response in the same cell that secreted it. For example, interleukin-1 (IL-1) is an immune signaling molecule involved in the inflammatory response and produced by a type of cell called a cytokine, which has receptors on its surface for IL-1 as a means of self-regulation. 

A paracrine is a chemical that induces a response in surrounding cells. Histamine, released in asthma and the allergic response, is considered a paracrine. Exocrine glands produce secretions that they release through ducts. Sweat and sebaceous glands are exocrine glands. 

113.

An element’s atomic number is determined by:

  • The number of protons it contains

  • The number of neutrons it contains

  • The sum of its protons and neutrons

  • The sum of its protons, neutrons, and electrons

Correct answer: The number of protons it contains

An atom’s protons and neutrons reside in its nucleus. Each element contains a unique number of protons, which designates the element’s atomic number.

114.

What is the passage’s overall tone?

  • Cautious

  • Argumentative

  • Pessimistic

  • Sympathetic

Correct answer: Cautious

The passage’s overall tone can be identified as cautious. The author is informing the reader that he/she should be cautious, or careful, when writing a dissertation paper or hiring someone to help.

The author is not being argumentative, as the passage does not present a strong claim then support it. The author is not being pessimistic, as the passage does not present the content in a negative or gloomy manner. The author is not being sympathetic, as the passage does not present content that shows sympathy.

115.

Which of the following is not a component of a typical eukaryotic cell?

  • Peptidoglycan

  • Nucleus

  • Ribosomes

  • Mitochondria

Correct answer: Peptidoglycan

Peptidoglycan, a complex polymer of sugars and amino acids, is the material composing the cell wall of most bacteria, which are prokaryotic organisms. Eukaryotic cells, such as those of animals, plants, fungi, and protists, do not have peptidoglycan in their cell walls. Plant and fungal cells do have cell walls, but these are made of cellulose and chitin, respectively, not peptidoglycan.

116.

Which of the following words is spelled correctly?

  • Conceive

  • Concieve

  • Conceve

  • Conceeve

Correct answer: Conceive

Conceive is spelled correctly.  

The rule "I before E except after C" applies here. In the spelling of conceive, the -e comes before the -i.

117.

Identify a sentence fragment.

  • When you use State Route 60 South as your route.

  • I took State Route 60 South when I drove to Aaron’s house.

  • State Route 60 South is closed for six months for repairs.

  • Each time I travel State Route 60 South, there is an accident.

Correct answer: When you use State Route 60 South as your route.

A sentence fragment is a group of words that do not form a sentence because it is missing a subject or a verb, or is a dependent clause. When you use State Route 60 South as your route has both a subject and a verb, but it is a dependent clause as marked by the subordinating conjunction when sentence-initial. Dependent clauses are incomplete thoughts and cannot stand alone as sentences.

The other three options are all complete sentences, as they all contain independent clauses.

I took State Route 60 South when I drove to Aaron’s house is a complex sentence with an independent clause (I took State Route 60 South) and a dependent clause (when I drove to Aaron’s house).

State Route 60 South is closed for six months for repairs is an independent clause and therefore a simple sentence.

Each time I travel State Route 60 South, there is an accident is a complex sentence with an independent clause (there is an accident) and a dependent clause (Each time I travel State Route 60 South).

118.

Which of the following best describes the author's perception of the mother?

  • Virtuous

  • Frustrated

  • Uncaring

  • Unaware

Correct answer: Virtuous

The author's word choice will tell the reader their perception of a character. In this case, the mother is described with words such as "saintly" and "patient" which are synonymous with "virtuous".

119.

Which of the following would be considered a secondary source representation?

  • A newspaper article reporting the results of academic research

  • A research article in an academic journal reporting the results of academic research

  • A presentation by a researcher reporting results of her academic research

  • A student's paper reporting on newspaper articles of academic research

Correct answer: A newspaper article reporting the results of academic research

A secondary source reports from a primary source. That is, the journalist did not conduct the research herself, but read an academic research study in an academic journal and reported about what she read.

A research article in an academic journal reporting the results of academic research is a primary source document. A presentation by a researcher reporting results of her academic research is also a primary source representation. In both of these representations, the sharer of the information is the same person as the discoverer of that information. A student's paper reporting on newspaper articles of academic research is three steps removed from the primary source: academic research (primary); newspaper article (secondary); and finally student paper.

120.

Convert 74 liters to milliliters.

  • 74,000 ml

  • 7,400 ml

  • 740 ml

  • 740,000 ml

Correct answer: 74,000 ml

Use a unit conversion fraction

74 liters(L) × 1,000 milliliters (ml)/1 L = 74,000 ml.

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