BIO100 Lesson 2 Quiz 2

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Marvis Kennedy
BIO100 - Lesson 2, Quiz 2 Section 14429

Recent Submission

Submitted On
12/12/2014 11:16:00 PM
Points Awarded
85
Date Graded
12/12/2014 11:16:00 PM Status
Graded
Points Possible
100

Question 1
The subatomic particles that play the greatest role in cellular chemical reactions are
Answer
electrons.
Comments
Correct!!

Max Score: 5
Actual Score: 5

Question 2
The structural unit that retains the properties of an element is the
Answer
atom.
Comments
Correct!!

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Actual Score: 5

Question 3
Which of the following are found in the nucleus of an atom?
Answer
A and B
Comments
Correct!!

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Actual Score: 5

Question 4
The component of an atom or molecule that is most important in determining its chemical properties is the
Answer
electron.
Comments
Correct!!

Max Score: 5
Actual Score: 5

Question 5
What is the maximum number of electrons the innermost shell can hold?
Answer
4
Comments
The correct answer is:
Two

Max Score: 5
Actual Score: 0

Question 6
An atom becomes an ion when
Answer
it gains or loses electrons.
Comments
Correct!!

Max Score: 5
Actual Score: 5

Question 7
The symbol 3CO2 represents
Answer
three molecules of carbon dioxide.
Comments
Correct!!

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Actual Score: 5

Question 8
In water, hydrogen bonding occurs between the hydrogen and
Answer
a hydrogen atom in a different molecule.
Comments
The correct answer is: an oxygen atom in a different molecule.

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Actual Score: 0

Question 9
Covalent bonds form when one atom _________ its _________ with another atom.
Answer
shares; electrons
Comments
Correct!!

Max Score: 5
Actual Score: 5

Question 10
Water is an important solvent of life because
Answer
it forms hydrogen bonds.
Comments
Correct!!

Max Score: 5
Actual Score: 5

Question 11
Carbon is such an important molecule for life because
Answer
it can form chemical bonds with a maximum of four other atoms.
Comments
Correct!!

Max Score: 5
Actual