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Introductory Biology Exam

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College Biology Quiz on Introductory Biology Exam, created by Tayleaf on 06/05/2015.
Tayleaf
Quiz by Tayleaf, updated more than 1 year ago
Tayleaf
Created by Tayleaf about 9 years ago
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Resource summary

Question 1

Question
Though scientists strive to be "purely objective", they:
Answer
  • Can't avoid being subjective
  • Have their own perspective or points of view
  • Are not neutral because of their having grown up in a particular aspect of society at a certain time
  • All of these statements are true

Question 2

Question
A valid experiment:
Answer
  • Always supports the hypothesis
  • Does not have to be repeatable
  • Includes both experimental and control treatments
  • All of these statements are true

Question 3

Question
Which of the following situations can be studied by using the scientific method?
Answer
  • Buying an air conditioner
  • Determining the effect of light on a frog
  • Finding the cause of static on your favorite radio station
  • All situations can be investigated

Question 4

Question
Adaptations:
Answer
  • Are short-lived
  • Result from the processes of mutation and natural selection
  • Decrease an organism's ability to survive in a particular environment
  • Affect only an organism's physiology

Question 5

Question
You are testing the effect of sugar on the freezing point of water. Your experimental setup is indicated below. Beaker: Solution (20 mLs per beaker): A 1% sugar B 5% sugar C 10% sugar D 1% salt You place the beakers in the freezer for one hour. You examine them and conclude that your experiment is invalid because:
Answer
  • Your sample of 20 mLs is too small
  • You didn't include a control
  • You didn't include beakers with 10% and 5% salt solution
  • You didn't repeat the experiment three times

Question 6

Question
Observations may:
Answer
  • Provide a large amount of scientific data
  • Allow for personal bias to enter a scientific investigation
  • Form the bases of a scientific theory
  • All situations are true

Question 7

Question
Which of these characteristics of life takes the longest time?
Answer
  • Metabolism
  • Growth
  • Evolution
  • Reproduction

Question 8

Question
An atom of magnesium has an atomic number of 12. How many electrons would be found in the third energy level?
Answer
  • 1
  • 2
  • 5
  • 6

Question 9

Question
Electrons:
Answer
  • Are randomly distributed around the nucleus
  • Are major contributors to the atomic weight
  • Have a negative charge
  • Do not participate in chemical bonds

Question 10

Question
The atomic number of oxygen is 8. Oxygen 16 and oxygen 18 are isotopes. They have:
Answer
  • The same number of neutrons
  • Different numbers of negatively charged particles
  • The same atomic mass
  • The same number of electrons in the outer shell

Question 11

Question
When an atom with seven electrons in the outer shell picks up another one, the atom becomes:
Answer
  • An isotope
  • A negatively charged ion
  • A positively charged atom
  • Radioactive

Question 12

Question
The transfer of electrons between two atoms occurs in a(n)
Answer
  • Covalent bond
  • Ionic bond
  • Hydrogen bond
  • All situations are true

Question 13

Question
The atomic # of an element is 10. This element would most likely:
Answer
  • Form ionic bonds
  • Be unreactive
  • Form covalent bonds
  • Can't tell from the information given

Question 14

Question
The chemical processes in the living cell are collectively called:
Answer
  • Adaptation
  • Homeostasis
  • Evolution
  • Metabolism

Question 15

Question
Radioactive isotopes:
Answer
  • Are electrically unbalanced
  • Are produced when substances are exposed to radiation
  • Undergo rearrangements and emit radiation in the process
  • Only undergo rearrangements when bombarded with particles

Question 16

Question
In science, a hypothesis that is not rejected after repeated tests is called:
Answer
  • An experiment
  • A hypothesis
  • A theory
  • True

Question 17

Question
Which of the following best describes the logic of the scientific process?
Answer
  • If I generate a testable hypothesis, tests and observations will support it.
  • If my prediction is correct, it will lead to a testable hypothesis.
  • If my tests are set up right, they will lead to a testable hypothesis.
  • If my hypothesis is correct, I can expect certain test results.

Question 18

Question
The epigenetic identical twin mice demonstrate how:
Answer
  • Identical twins always look identical
  • Identical twins raised in different environments look different
  • Living organisms are products of their genes and the genes' environments
  • All situations are true

Question 19

Question
Inorganic compounds:
Answer
  • Always contain carbon
  • Often contain ionic bonds
  • Include carbohydrates, lipids, proteins, and nucleic acids
  • Are usually very large

Question 20

Question
Which of the following statements is true for water?
Answer
  • Water is a non-polar substance
  • Hydrogen bonds join two hydrogen atoms to the oxygen atom
  • In the molecule, the hydrogen atoms have a partial negative charge
  • In the molecule, the hydrogen atoms have a partial positive charge

Question 21

Question
The fact that water can maintain a constant temperature well is because it has a:
Answer
  • High heat of vaporization
  • High specific heat
  • Low freezing point
  • Non-polar nature

Question 22

Question
Which of the following is (are) due to the fact that H2O molecules hydrogen bond to each other in liquid water?
Answer
  • High heat of vaporization
  • High surface tension
  • High specific heat
  • All situations are true

Question 23

Question
Because ice expands upon forming:
Answer
  • Ice is denser than liquid water
  • Water isn't a very good solvent
  • Ponds freeze from the top down
  • All situations are true

Question 24

Question
A pH of 10 is how many times as basic as a pH of 7?
Answer
  • 3
  • 10
  • 100
  • 1000

Question 25

Question
A reaction of an acid and a base will produce water and:
Answer
  • Gas
  • A salt
  • Solute
  • Solvent

Question 26

Question
In water, H2CO3 dissociates into H+ and HCO3-. This compound, H2CO3, is behaving as a(n):
Answer
  • Base
  • Buffer
  • Acid
  • Salt

Question 27

Question
Most life processes take place at a pH of:
Answer
  • 3 to 4
  • 4 to 6
  • 6 to 8
  • 8 to 12

Question 28

Question
Which is true about the pH scale?
Answer
  • It is linear
  • It defines the degree of acidity or basicity of a solution
  • It is expressed with numbers 1-12
  • All situations are true

Question 29

Question
Scientific facts cannot be disputed.
Answer
  • True
  • False

Question 30

Question
Carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur constitute less than 75% of the composition of living organisms.
Answer
  • True
  • False

Question 31

Question
The remains of organisms found in geologic formation are called fossils.
Answer
  • True
  • False

Question 32

Question
The Daddy water bugs story was used to illustrate how the sociocultural framework of scientists can limit their vision.
Answer
  • True
  • False

Question 33

Question
The power of human belief systems is such that even our immune system response can be modified by previous conditioning.
Answer
  • True
  • False

Question 34

Question
The bonds in methane (CH4) are ionic.
Answer
  • True
  • False

Question 35

Question
PET scans are used medically to see activity in the body after a person is given radioactive tracers.
Answer
  • True
  • False

Question 36

Question
Critical thinking involves examining the big picture and questioning methodology, results, and conclusions.
Answer
  • True
  • False

Question 37

Question
Heavy hydrogen, an isotope of hydrogen, differs from the regular atom in its charge.
Answer
  • True
  • False

Question 38

Question
Homologous structures look alike in different lineages but evolved independently.
Answer
  • True
  • False
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