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WorksheetsADV STAAR Review #1
Total questions: 20
Worksheet time: 20mins
Match each biomolecule to the its function(s) in the cell:
Carbohydrates
main energy source; cell wall structure
Lipids
energy storage; membrane structure
Proteins
enzymatic functions and structural support
Nucleic Acids
genetic information storage and transfer
Which pair of statements best compares the primary functions of the carbohdyrate chitin and the protein chitinase?
The chitin in the exoskeleton provides insulation for insects.
The chitinase stores genetic material for insectivorous bats.
The chitin in the exoskeleton breaks down for energy to be used by insects.
The chitinase provides insulation for insectivorous bats.
The chitin in the exoskeleton stores genetic material for insects.
The chitinase provides support and protection for insectivorous bats.
The chitin in the exoskeleton provides support and protection for insects.
The chitinase breaks down chitin for energy to be used by insectivorous bats.
Actin is a protein that helps the cell maintain its shape and polarity. It also plays a major role in muscle contraction. A table summarizing the cellular functions of different types of proteins is shown.
Based on this information, actin is most likely --
an enzyme protein
a structural protein
a messenger protein
a transport protein
Where should you look on a nutrition label to find the energy provided by the calories in this food? (hint: more than one answer is correct)
Scientists observe the traits of cells on four microscope slides and record their observations in a table. Based on the scientists' observations, identify the eukaryotic cells for each microscope slide in the table.
Which statement accurately compares eukaryotic cells and prokaryotic cells?
Eukaryotic cells are more complex than prokaryotic cells.
Eukaryotic cells replicate faster than prokaryotic cells.
Only prokaryotic cells have membrane-bound organelles.
Only prokaryotic cells lack outer membranes and cell walls.
A Venn diagram comparing viruses to bacteria is shown. Which traits apply to each section of the diagram?
utilize a capsid structure
have active metabolism
A student claims that the influenza virus replicates in the air and then infects people. Which statement BEST describes the claim?
The claim is true because viruses can infect cells without direct contact.
The claim is true because viruses replicate within the particles of the air.
The claim is false because viruses require host cells in order to replicate.
The claim is false because viruses cannot survive in the air.
Which statements best describe the difference between active transport and passive transport?
Active transport occurs only in cells that require large amounts of energy.
Passive transport occurs in all cells.
Active transport requires ATP.
Passive transport does not require ATP.
Active transport moves substances along the concentration gradient.
Passive transport moves substances against the concentration gradient.
Active transport occurs in all cells.
Passive transport requires ATP.
Organize these statements into the right categories:
does NOT require energy
molecules move WITH/ALONG the gradient
molecules move from high concentration to low
Requires the use of energy (ATP)
molecules move AGAINST the gradient
molecules move from low concentration to high
Which side of the membrane has a high concentration?
A diagram of a process that occurs during one of the stages of the cell cycle is shown.
Which answer choice best identifies the process illustrated and the stage of the cell cycle in which it occurs?
replication in interphase
crossing over in metaphase
protein synthesis in prophase
cytokinesis in anaphase
Scientists determined the total mass of DNA from a sample of animal cells. The masses of equal numbers of cells were taken during three different stages of the cell cycle. Stage I contains cells massed during G1 of the cell cycle.
Which statement best describes the cells during Stage II?
The cells have replicated their DNA in S phase, but have not completed mitosis and cytokinesis.
The cells have completed mitosis and cytokinesis without replicating their DNA in S phase.
The cells have replicated their DNA in S phase and completed mitosis and cytokinesis.
The cells have temporarily exited the cell cycle without replicating their DNA in S phase.
Scientists have reported that more than 95% of the factors that lead to some types of cancers are caused by random DNA-copying errors. During which phase of the cell cycle do these DNA-copying errors most likely occur?
S phase
G1 Phase
G2 Phase
M phase
Put the steps of mitosis of a plant cell into the correct order:
Match each phase of mitosis with the correct description:
Prophase
Chromosomes condense and become visible
Metaphase
Chromosomes align at the cell's equatorial plate
Anaphase
Chromatids are pulled apart to opposite poles
Telophase
Nuclear membranes reform around the separated chromosomes
Which of these properties are found only in cancer cells?
regulated gene expression
unregulated cell division
presence of mitochondria
response to signals outside the cell
During the cell cycle, proteins called cyclins bind to enzymes that send signals for the cell to progress through stages of cell replication. At the end of this cycle, the cyclins degrade to prevent further signaling for the cell to divide.
Uncontrolled production of cyclins will most likely result in --
the immediate death of the cell
the formation of haploid cells
the transfer of cyclins to other cells
the formation of tumors
The diagram shows a process that occurs during the development of an organism.
Which statement explains how the different cell types in the image are formed?
Each cell type uses its own unique replication process.
Each cell type expresses different genes at different times.
Each cell type contains a different part of the original DNA.
Each cell type has different enzymes to replicate genetic material.
As unspecialized cells mature, what controls their development into specific cell types?
the rate at which the cells grow
the genes expressed within the cells
the nutrients available to the cells
the age of neighboring cells
