Test Questions and Correct
Answers.
M1: Problem Set
Question 1
pts
What are three ways that biochemists study biological organisms?
Your Answer:
Biochemist study biological organisms through
1. Structure
2. Function
3. Biomolecules
Biochemists study 1) the relationship between structure and
function of biomolecules, 2) chemical reactions of organisms
(metabolism), and 3) communication within and among organisms.
Question 2
pts
What is the definition of biochemistry?
Your Answer:
Biochemistry is the study of structure and function of biomolecules.
Often referred to as the chemistry of life, biochemistry asks how the
remarkable properties of organisms relate to their molecules.
Question 3
pts
What is another name for firefly?
Your Answer:
lampyridae
,lightning bug
Question 4
pts
,Is Li an element common in biological organisms?
Your Answer:
No, its not.
No. See Figure 1.3 for the common elements.
Question 5
pts
What is known as the “medium of life”?
Your Answer:
water
Water
Question 6
pts
What is the bond angle associated with trigonal pyramidal shape?
Your Answer:
around 107 degrees
107.5 degrees
Question 7
pts
Are transition metals commonly found in biological organisms?
Your Answer:
yes
Yes. They are trace elements in organisms. See Figure 1.3 for
examples.
Question 8
pts
True or false: Water can make up 85% (by mass) of a living organism.
True
, False
True. Some plants are made up of 90% water by mass.
Question 9
pts
True or false: Large elements tend to make the strongest covalent bonds.
True
False
False. Smaller elements tend to make the strongest bonds due to
significant overlap.
Question 10
pts
Name three bulk elements. Name three trace elements.
Your Answer:
Bulk elements:
1. C
2. O
3. H
Trace Elements:
1. Fe
2. Cu
3. Zn
Bulk elements (three of these): H, C, N, O, Na, P, S, Cl, K, and Ca
Trace elements: Mg, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Se, Mo, I, and W.