AnswersFL-2000310-Biology 1 Sem 1 - FlexCatalysts

Catalysts — Cumulative exam Answers

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Unsaturated and saturated lipids exhibit different characteristics based on their structures. Which characteristic is unique to saturated fats?

A
forms covalent, carbon-to-carbon bonds
B
is a liquid at room temperature
C
contains the maximum number of hydrogen atoms
D
consists of fatty acids and a carboxyl group
2
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Which is an example of a lipid?

A
cholesterol
B
glycerol
C
glycogen
D
proteins
3

Drinking too much water during exercise can cause a condition in which the concentration of sodium in the blood is lower than normal. What immediate response would the blood cells have in this condition?

A
Cells swell as water moves into them.
B
Cells swell as water moves out of them.
C
Cells shrivel as water moves out of them.
D
Cells shrivel as water moves into them.
4

Which are produced as a result of meiosis?

A
zygotes
B
chromosomes
C
tetrads
D
gametes
5

During which process is ethanol produced?

A
lactic acid fermentation
B
alcohol fermentation
C
citric acid cycle
D
electron transport chain
6

Which element is most important for adding strength to hair, feathers, and outer skin?

A
oxygen
B
hydrogen
C
sulfur
D
phosphorus
7

Which term refers to a solution with a higher solute concentration outside the cell than inside the cell?

A
hypertonic
B
hypotonic
C
equitonic
D
isotonic
8

Mitosis is divided into phases.Which phase of mitosis is shown in the diagram?

Question illustration
A
anaphase
B
metaphase
C
telophase
D
prophase
9

Why are algae and ferns both green?

A
They each contain chlorophyll that absorbs violet-blue light and reflects green light.
B
They each contain chlorophyll that absorbs green light and reflects violet-blue light.
C
Algae contain chlorophyll, and ferns contain ferredoxin that absorbs violet-blue light and reflects green light.
D
Ferns contain chlorophyll, and algae contain ferredoxin that absorbs green light and reflects violet-blue light.
10

Which is required for sexual reproduction?

A
mitosis
B
binary fission
C
diploid cell production
D
meiosis
11

What happens to excess carbohydrates in animals?

A
They are stored as fat.
B
They are stored as protein.
C
They are stored in nucleic acids.
D
They are stored as sugar.
12

Which statement best describes the molecular structure of protein, along with one of the functions of proteins?

A
It is a straight chain hydrocarbon that can help fight disease.
B
It is a complex, folded chain that helps regulate cell processes.
C
It is a simple carbon, hydrogen, and oxygen molecule that creates movement.
D
It is a chain of nucleotides, and forms muscle, bone, and ligaments.
13

Mitosis is important because it allows

A
new cells to replace old damaged cells.
B
new cells to repair old damaged cells.
C
old cells to self-repair when they become damaged.
D
existing cells to take over the function of damaged cells.
14

How many homologous chromosome alignments are possible for independent assortment during meiosis?

A
one
B
two
C
three
D
four
15

Look at the levels of carbon dioxide in the data table below.Carbon in the AtmosphereWhat quantity of carbon dioxide was in the atmosphere in 1980?

Question illustration
A
317 ppm
B
326 ppm
C
339 ppm
D
371 ppm
16

The organic compound below consists of an adenine molecule (blue), a ribose (purple), and three phosphate groups (orange).Which compound is shown?

Question illustration
A
chlorophyll
B
ferredoxin
C
ATP
D
NADPH
17

Which best describes what happens to ATP during photosynthesis?

A
ATP is produced and then used to produce glucose.
B
ATP is broken down and then not used again.
C
ATP is formed and remains unchanged in the chloroplast.
D
ATP is changed to ADP and then moved to the cytoplasm.
18

Which factor can decrease the rate of a chemical reaction?

A
low activation energy
B
high pressure
C
low temperature
D
high concentration of enzyme
19

What is the next step in the process after a substrate enters the active site of an enzyme?

A
The chemical reaction occurs.
B
New substances called products are formed.
C
The enzyme and the substrate bind to form the enzyme-substrate complex.
D
The enzyme and the products bind to form the enzyme-products complex.
20

How does the cell wall protect a plant cell?

A
The cell wall protects the cell by providing support and maintaining the cell's shape.
B
The cell wall protects the cell by storing food so the plant doesn't run out.
C
The cell wall is thin and flexible, which allows the cell to be moved without harming the organelles.
D
The cell wall is on the inside of the cell and serves to contain the contents of the cell.

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