AnswersBiology HB1416 Macromolecules Catalysts Week 5Diagnostic PreTest

Diagnostic PreTest Answers

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How are proteins and nucleic acids related?

A
They both provide energy.
B
They both carry genetic information.
C
The structure of proteins is determined by nucleic acids.
D
The subunits of nucleic acids are also the subunits of proteins.
22
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The role of the cell membrane is most like the job of which person?

A
a firefighter who evacuates people from a burning building
B
a police officer who allows select people to enter and leave a crime scene
C
a bus driver who drives the express route from the suburb to downtown
D
a teacher who keeps students in the classroom during an exam
23

What do alcohol fermentation, acetyl CoA formation, and the Krebs cycle have in common?

A
All produce water.
B
All produce carbon dioxide.
C
All produce ATP.
D
All produce alcohol.
24

What is the function of interphase in the eukaryotic cell cycle?

A
cell repair
B
cell growth
C
cell reproduction
D
cell division
25

Which best describes stem cells?

A
Differentiation produces specialized cells from stem cells.
B
Self-renewal produces specialized cells from differentiated cells.
C
Self-renewal produces differentiated cells from stem cells.
D
Differentiation produces stem cells from specialized cells.
26

Look at the picture below.What macromolecules make up most of the structure that is shown?

Question illustration
A
carbohydrates
B
lipids
C
nucleic acids
D
proteins
27

Consider this animal cell.Which organelles are labeled D, and what is one feature that distinguishes them from the other labeled organelles?

Question illustration
A
chloroplasts; the only organelles that produce sugars from sunlight
B
ribosomes; only found in animal and bacterial cells
C
centrioles; found in animal cells but not plant cells
D
mitochondria; the only energy-generating structures found in cells
28

Which process occurs within the mitochondria?

A
lactic acid fermentation
B
alcohol fermentation
C
glycolysis
D
Krebs cycle
29

What is the end result of the eukaryotic cell cycle?

A
no parent cells and two daughter cells
B
one parent cell and two daughter cells
C
two parent cells and one daughter cell
D
one parent cell and one daughter cell
30

Which argument supports the idea that viruses are alive?

A
Viruses have a cell membrane.
B
Viruses contain unique genetic information.
C
Viruses replicate in a host.
D
Viruses do not produce proteins.
31

Sebastian wants to make ball-and-stick models of the four macromolecules. He has colored balls for each of the elements in these molecules, including the following. red: hydrogen black: carbon purple: oxygen green: nitrogenWhich molecule could he make that consists of long chains of red and black colored balls?

A
carbohydrates
B
lipids
C
nucleic acids
D
proteins
32

The concentration of sodium on the inside of the cell is 20 mM. The outside of the cell has a sodium concentration of 115 mM. Which mechanism of ion uptake would best move sodium from the inside of the cell to the outside?

A
osmosis
B
diffusion
C
passive transport
D
active transport
33

Chloroplasts have a complex internal structure, as shown in the model below.In which location is glucose formed?

Question illustration
A
Location A
B
Location B
C
Location C
D
Location D
34

How does interphase prepare cells for mitosis?

A
rest prior to cell division
B
growth of cell and replication of DNA
C
dissolution of nucleus and cell membrane
D
division of cytoplasm
35

Which statement best describes how a catalyst can speed up a chemical reaction?

A
The catalyst decreases the activation energy needed.
B
The catalyst increases the concentration of products.
C
The catalyst binds to enzymes to release substrates.
D
The catalyst increases the concentration of reactants.

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