AnswersFL-2000310-Biology 1 Sem 1 - FlexCatalysts

Catalysts — Cumulative exam Answers

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21
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During which stage of cellular respiration is glucose broken down into two molecules of pyruvic acid?

A
electron transport chain
B
glycolysis
C
Krebs cycle
D
acetyl CoA formation
22
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Fiona wants to use the scientific method to answer the question “Do oxygen levels in the air affect rates of photosynthesis?” She reads about photosynthesis in her biology book and is ready to carry out the next step. What should she do next?

A
perform an experiment
B
design a procedure
C
make observations
D
form a hypothesis
23

Which organisms in the chart can produce ATP by photosynthesis?OrganismCells contain chloroplastsAlgaeXAmoebas Mushrooms Oak treesXBermuda grassX

A
All of these organisms produce ATP by photosynthesis.
B
None of these organisms produce ATP by photosynthesis.
C
Only amoebas and mushrooms produce ATP by photosynthesis.
D
Only algae, oak trees, and Bermuda grass produce ATP by photosynthesis.
24

Which is a component of the modern cell theory that was not part of the original cell theory?

A
All organisms are made of cells.
B
All cells are similar in composition and metabolic activities.
C
All cells come from preexisting cells.
D
A cell is the basic unit of structure and function for all living things.
25

A student constructs a Venn diagram to compare the organelles in plant and animal cells.Venn Diagram of Plant and Animal CellsWhich organelle should be listed under “Animal Only” in the diagram?

Question illustration
A
nucleus
B
centriole
C
ribosome
D
cell wall
26

If the endoplasmic reticulum were removed from the cell, which organelle would not be able to function properly, and why?

A
mitochondria, because they rely on the ER as an energy source
B
ribosomes, because they receive proteins made by the ER
C
Golgi apparatus, because it packages proteins received from the ER
D
cytoplasm, because it relies on the ER for structural support
27

Which organisms are prokaryotes?

A
archaea
B
fungi
C
protists
D
plants
28

Which compound is produced during carbon fixation?

A
PGA
B
G3P
C
RuBP
D
C6H12O6
29

For which form of reproduction is a mate required?

A
asexual reproduction
B
sexual reproduction
C
mitosis
D
binary fission
30

Sucrose is made of which simple sugars?

A
glucose and fructose
B
fructose and galactose
C
galactose and cellulose
D
cellulose and glucose
31

Which statement best distinguishes plant cells and animal cells?

A
There are more ribosomes in animal cells than in plant cells.
B
Plant cells have more lysosomes than animal cells have.
C
Plant cells have large vacuoles, and animal cells do not.
D
The position of the nucleus in the cells is different in plants and animals.
32

Which substance is a compound?

A
salt
B
phosphorus
C
sulfur
D
oxygen
33

What observation led researchers to propose that chloroplasts evolved from cyanobacteria?

A
Both produce proteins.
B
Both contain mitochondria.
C
Both provide structure to cells.
D
Both perform photosynthesis.
34

The first strands of DNA were observed through which microscope?

A
tunneling microscope
B
simple microscope
C
compound light microscope
D
electron microscope
35

Which statement best describes the relationship between proteins and nucleic acids?

A
Proteins read the instructions that are contained in nucleic acids.
B
Nucleic acids synthesize the amino acids for protein construction.
C
Nucleic acids provide the blueprint for the construction of proteins.
D
Proteins are composed of nucleic acids.
36

Which macromolecule provides the blueprint for living things by storing and transmitting genetic information?

A
protein
B
lipid
C
nucleic acid
D
carbohydrate
37

Which component makes each amino acid unique?

A
amino group
B
carboxyl group
C
R group
D
phosphate group
38

Which statement describes the reaction for cellular respiration?

A
The equation is carbon dioxide + water glucose + oxygen + water and energy is required in the form of light
Option A
B
The equation is glucose + oxygen carbon dioxide + water and energy is produced in the form of ATP.
Option B
C
The equation is carbon dioxide + water glucose + oxygen + water and energy is produced in the form of ATP.
Option C
D
The equation is glucose + oxygen carbon dioxide + water and energy is required in the form of light.
Option D
39

Which is an important difference between light-dependent (L-D) and light-independent (L-IND) reactions in photosynthesis?

A
The L-D reactions need CO2 and light energy, and the L-IND reactions needs water and O2.
B
The L-D reactions require light energy and water, and the L-IND reactions require ATP, NADPH, and CO2.
C
The L-D reactions can only occur during daylight, and the L-IND reactions can only occur during the night.
D
The L-D reactions need water and CO2, and the L-IND reactions need CO2 and light.
40

Which was Venter’s contribution to science?

A
discovered the existence of single-celled organisms
B
invented the light microscope
C
discovered the structure of DNA
D
invented a synthetic cell

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