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WorksheetsAP Biology Unit 2 Review
Total questions: 15
Worksheet time: 24mins
Salivary glands produce a large quantity of enzymes that are transported out of the secretory cells. Which of the following organelles would be abundant in these cells?
nuclei
golgi apparatus
smooth ER
lysosomes
Cells in the pancreas will incorporate radioactively labeled amino acids into proteins. This "tagging" of newly synthesized proteins enables a researcher to track their location. Predict the most likely pathway of an enzyme secreted by pancreatic cells.
ER -> lysosomes -> vesicles that fuse with the plasma membrane
Golgi apparatus -> ER -> lysosome
Nucleus -> ER -> Golgi apparatus
ER -> Golgi apparatus -> vesicles that fuse with the plasma membrane
Prokaryotic cells and eukaryotic cells are very different from each other. However, both have (a) .
Match the following organelles to their descriptions:
Mitochondria
Present in large numbers in cells that have high energy demands, such as muscles
Golgi apparatus
Has a receiving (cis) and shipping (trans) face: packaging and secretion center
Lysosomes
Membrane-bound structure containing hydrolytic enzymes
Smooth ER
An organelle with extensive, folded membranes: abundant in cells that detoxify poisons
Which of the following uses passive transport without the help of proteins to move materials across the plasma membrane?
the depolarization of a muscle cell by transporting ions across the plasma membrane
the uptake of glucose by the microvilli of cells lining the stomach
the movement of large proteins across the plasma membrane
the movement of carbon dioxide across the plasma membrane
Large molecules are moved out of the cell by which of the following processes?
endocytosis
exocytosis
vesicles
passive diffusion
Which of the following processes could result in the net movement of a substance into a cell if the substance is more concentrated in the cell than in the surroundings?
active transport
osmosis
diffusion
facilitated diffusion
The fluid mosaic model describes the plasma membrane as consisting of a (a) bilayer with embedded (b) .
Which of the following is true of small, nonpolar molecules?
They easily pass through a membrane's lipid bilayer
They very slowly pass through a membrane's lipid bilayer
They require transport proteins to pass through a membrane's lipid bilayer
They are actively transported across the cell membrane
Which of the following are common traits of both the chloroplast and mitochondrion?
Both are surrounded by a single membrane
Both have their own DNA
Both are found in animal and plant cells
Both synthesize proteins using ribosomes on the Rough ER
White blood cells (WBCs) are more resistant to lysis than are red blood cells (RBCs). When looking at a sample of blood for WBCs, what could you do to reduce the interference from RBCs?
Mix the blood in a salty solution to cause the RBCs to lyse
Mix the blood in a hypotonic solution to cause the RBCs to lyse
Mix the blood in a hypertonic solution to cause the RBCs to lyse
Mix the blood in an isotonic solution to cause the WBCs to float on top
The endosymbiont theory is supported by which pieces of evidence? (Select all that apply)
mitochondria have circular DNA like prokaryotes
mitochondria use ATP like prokaryotes
chloroplasts contain ribosomes like prokaryotes
chloroplasts have a contractile vacuole like prokaryotes
Which of the following is most likely to impose a limit on cell size?
total volume of endoplasmic reticulum
volume of the nucleus
rate of ATP production by the mitochondria
ratio of surface area to volume
Match the following cells in solutions to their outcomes:
Animal cell placed in hypertonic solution
Shrivel
Animal cell placed in hypotonic solution
Lyse
Plant cell placed in hypertonic solution
Plasmolysis
Plant cell placed in hypotonic solution
Turgid
Plant cell placed in isotonic solution
Flaccid
Melanocytes are cells in the skin's epidermis that produce melanin - a protein that protects the skin from UV light. Based on their function, what organelle would be found in high numbers in melanocytes?
ribosomes
chloroplasts
lysosomes
mitochondria
