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Test Bank (Download Now) for Human Biology 15th Edition by Mader ISBN: 9781259689796

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Test Bank (Download Now) for Human Biology 15th Edition by Mader Windelspecht ISBN: 9781259689796 1259689794 9781259933646 1259933644

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Chapter 02: Testbank
Student: ___________________________________________________________________________
1. The smallest unit of an element that still retains the chemical and physical properties of that element is called a(n)
A. isotope.
B. nucleus.
C. atom.
D. molecular bond.
E. neutrino.
2. In an atom, the number of protons always equals the number of
A. electrons.
B. neutrons.
C. neutrons and protons.
D. quarks.
E. neutrinos.
3. How many elements occur naturally?
A. 112
B. 92
C. 64
D. 32
E. 6
4. The atomic number of an atom is determined by the number of
A. protons.
B. neutrons.
C. electrons.
D. protons and neutrons.
E. protons and electrons.
5. An element cannot be broken down by chemical means.
True False
6. Why is He positioned above Ne in the periodic table?
A. They both have the same atomic mass.
B. They both have the same number of electrons in their outermost orbital.
C. They both have a full outermost orbital.
D. They both have the same atomic number.
E. They both have the same number of protons in their nuclei.
7. Be has an atomic number of 4 and an atomic mass of 9. How many protons does it have?
A. 4
B. 5
C. 9
D. 13
E. 7
8. What is the symbol for sodium?
A. Na
B. S
C. So
D. N
E. Dm

HUMAN BIOLOGY 15TH EDITION MADER TEST BANK

02-2
Copyright © 2018 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of
McGraw-Hill Education.
9. Which of the following elements will have more than two electrons and have a full outer orbital?
A. He
B. Ne
C. C
D. N
E. O
10. Isotopes of an element differ due to the number of
A. protons.
B. neutrons.
C. electrons.
D. both protons and electrons.
E. neutrinos.
11. Carbon dating is a common method employed in dating certain kinds of fossils. It is based on the radioactive
decay of an isotope of carbon (C14). Referring to the atomic number of carbon attained from the periodic table,
how many neutrons does C14 have?
A. 2
B. 4
C. 8
D. 12
E. 14
12. What substance is used in medicine to produce various images of organs and tissues?
A. a mixture
B. a tracer
C. an emulsion
D. a colloid
E. a sensor
13. Radiation can have both positive and negative impact on
humans.
True False
14. Two or more atoms joined together through the sharing of electrons are called a(n)
A. atomic unit.
B. molecule.
C. compound.
D. isotope.
E. ion.
15. Ca3(PO4)2 represents a(n)
A. element.
B. mixture.
C. compound.
D. isotope.
E. atom.
16. Atoms that share electrons have what type of bonds?
A. covalent
B. neutral
C. hydrogen
D. colloidal
E. ionic

HUMAN BIOLOGY 15TH EDITION MADER TEST BANK

02-3
Copyright © 2018 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of
McGraw-Hill Education.
17. CaCl2 is a salt that forms as the result of what type of bond?
A. covalent
B. hydrogen
C. polar
D. nonpolar
E. ionic
18. Water makes up 60–70% of total body weight.
True False
19. Which type of bond is responsible for holding two water molecules together, creating the properties of water?
A. hydrogen
B. covalent
C. ionic
D. polar
E. double covalent
20. Hydrogen bonds
A. result from the loss of neutrons by an atom.
B. result in the formation of salts.
C. involve the loss and gain of electrons.
D. involve the sharing of electrons.
E. are relatively weak and can be broken rather easily.
21. The reason water is polar is because
A. in polar molecules atoms share electrons evenly.
B. the electrons spend more time circling the oxygen atom than the hydrogens.
C. hydrophilic molecules interact with water.
D. hydrophobic molecules do not interact with water.
E. there is a transfer of electrons from the hydrogen to the oxygen.
22. Which of the following characteristics of water is most responsible for the sinking of the Titanic?
A. Water is liquid at room temperature.
B. Water has a high heat of vaporization.
C. The temperature of liquid water rises and falls slowly.
D. Frozen water is less dense than liquid water.
E. Water molecules are cohesive.
23. On a warm day in April, Tina jumped into the swimming pool. To her surprise the water was really cold. Which
property of water did she discover?
A. Water molecules are cohesive.
B. The temperature of liquid water rises and falls slowly.
C. Water possesses hydrogen bonds.
D. Water is a polar molecule.
E. Frozen water is less dense than liquid water.
24. William noticed water mysteriously climbing up a capillary tube. This is an example of which property of water?
A. Frozen water is less dense than liquid water.
B. The temperature of liquid water rises and falls slowly.
C. Water molecules are cohesive.
D. Water has a high heat of vaporization.
E. Water is a solvent.
25. In an acidic solution, the number of H+
is
A. less than the number of OH-