Unit 2 Biochemistry
Unit 3 Cell Structure
Unit 4 Membranes and Transport
Unit 6 Mitosis
100
All BUT one of the following is a component of nucleic acids. Nucleic acids DO NOT contain
A) Ribose sugars
B) nitrogenous bases
C) phosphates
D) amino acids
The correct answer is D) Amino Acids
100
What is the function of the Golgi apparatus?
A) house digestive enzymes
B) movement
C) packages proteins for transport
D) houses cellular DNA
The correct answer is C) packages proteins for transport.
100
Which process moves water molecules across the membrane of a cell?
A) exocytosis
B) diffusion
C) endocytosis
D) osmosis
The correct answer is D) osmosis
100
During mitosis, the nucleus
A) enlarges
B) splits into four
C) splits into two
D) loses half of its chromosomes
The correct answer is C) splits into two
200
This element is found in all living things. It is recycled when organisms die. It is transformed from one form to another through photosynthesis and cellular respiration. That element is
A) helium
B) nitrogen
C) calcium
D) carbon
The correct answer is D) Carbon.
200
The site of protein synthesis in a cell is the ______________.
A) ribosome
B) codon
C) tRNA
D) amino acid
The correct answer is A) ribosome
200
While cleaning a saltwater aquarium, students placed a family of fiddler crabs from the saltwater aquarium into a container of distilled water. What effect will this have on the crabs?
A) the crabs will release salts left in their systems
B) the crabs will not be affected at all
C) the crabs will die if they are left in fresh water, their cells will burst
D) the crabs will die if left in freshwater, their cells will shrink
The correct answer is C) the crabs will die if they are left in fresh water, their cells will burst
200
Referring to the graph above, what phase would account for about half of the time spent by a cell in the cell cycle?
A) G2 Phase
B) S Phase
C) M Phase
D) G1 Phase
The correct answer is D) G1 Phase
300
All the biological macromolecules contain carbon, hydrogen and oxygen. However, most do not contain nitrogen. The category that contains nitrogen are
A) unsaturated fats
B) proteins
C) carbohydrates
D) lipids
The correct answer is B) Proteins.
300
Without ribosomes, a cell could not produce:
A) lipids
B) water
C) proteins
D) salt
The correct answer is C) proteins
300
When a raw, shell-less egg was placed in sugar solution, the egg shrank. The egg was brought back to its original size by placing it in water. Which process does the experiment demonstrate?
A) reverse osmosis
B) dehydration
C) osmosis
D) diffusion
The correct answer is C) osmosis
300
A model of one stage of mitosis is shown here. Draw conclusions about what happens in the NEXT stage of mitosis by selecting all the answers that apply.
A) chromosomes will condense
B) chromatids will separate
C) chromatids will move in the opposite directions
D) nuclear membrane will disappear
E) spindle fibers will form
The correct answer is B and C
400
A student was asked to refine a model comparing DNA and RNA. The structures were compared originally, but the teacher asked the student to compare their FUNCTION. Which statement could replace the question mark in the Venn diagram?
A) DNA and RNA both act as structural components of the nuclear envelope.
B) DNA and RNA both act as catalytic molecules during chemical reactions.
C) DNA and RNA both carry caloric energy used in cell metabolism.
D) DNA and RNA both carry genetic information that encodes for proteins.
The correct answer is D) DNA and RNA both carry genetic information that codes for proteins.
400
What type of biomolecule will be produced at the end of the process shown in the illustration?
A) lipid
B) protein
D) sugar
D) fat
The correct answer is B) protein
400
1) diffusion
2) osmosis
3) active transport
All of these are methods by which a cell...
A) reproduces
B) removes waste
C) maintains homeostasis
D) creates energy
The correct answer is C) maintains homeostasis.
400
In order for daughter cells to contain a complete set of DNA and chromosomes, the genome of a cell must be duplicated before it divides. The nucleus must accurately separate chromosomes. At the same time, the cytoplasm must divide and the organelles must be distributed to the daughter cells. Which model BEST describes the sequence of events in a normal cell division?
A) S -> G1 -> G2 -> mitosis -> cytokinesis
B) G1 -> S -> G2 -> mitosis -> cytokinesis
C) cytokinesis -> mitosis -> G1 -> S -> G2
D) mitosis -> G1 -> S -> G2 -> cytokinesis
The correct answer is B) G1 -> S -> G2 -> mitosis -> cytokinesis
500
All living things are made up of four classes of biological macromolecules: carbohydrates, lipids, proteins, and nucleic acids. Macromolecules are large molecules composed of thousands of covalently connected atoms, also called polymers. A polymer is a long molecule consisting of many similar building blocks; the small building-block molecules are called monomers.
One element is critical to building proteins as well as nucleic acids. What element is that? How does it get into the mix of biomolecule elements?
A) carbon; Producers incorporate carbon into every food web via photosynthesis.
B) sulfur; Top-level consumers eat lower-level consumers, their prey. The sulfur in the muscle tissue of the prey is passed on through the food web.
C) nitrogen; Decomposers such as bacteria fix atmospheric nitrogen and plants then incorporate the nitrogen.
D) oxygen; oxygen is 21% of our atmosphere. All organisms incorporate nitrogen into their bodies through respiration.
The correct answer is C) nitrogen; Decomposers such as bacteria fix atmospheric nitrogen and plants then incorporate the nitrogen.
500
Review the image of the cell. What type of cell is this? Provide an explanation for your answer.
A) it contains organelles and the shape indicates a plant cell.
B) It is a prokaryotic animal cell. It is rounded, has organelles and DNA in a nucleus.
C) It is a eukaryotic animal cell. It contains organelles excluding chloroplasts.
D) It is a prokaryotic cell. It does not contain cellular organelles including a nucleus.
The correct answer is C) It is a eukaryotic animal cell. It contains organelles excluding chloroplasts.
500
Biology students used raw eggs in an experiment on tonicity and osmosis. The students put their eggs into vinegar to remove the shells. The vinegar was used to remove the shell from the raw egg. What other effect(s) did the vinegar have on the egg?
A) The vinegar solution was hypotonic, causing the egg to gain mass.
B) The vinegar solution was isotonic to the egg so the mass remained constant.
C) The vinegar solution was hypertonic, causing the egg to gain mass.
D) The vinegar solution was hypotonic, causing the egg to lose mass.
The correct answer is D) the vinegar solution was hypotonic, causing the egg to gain mass.
500
Place the phases of Mitosis in the correct order:
anaphase
prophase
telophase
metaphase
The correct answer is:
Prophase-Metaphase-Anaphase-Telophase