WorksheetsCells
Total questions: 30
Worksheet time: 11mins
Which of the following are the functions of proteins found in cell membranes?
Form pores
Act as carrier molecules
Act as enzymes
Lipid soluble molecules diffuse through the ____________; water soluble molecules diffuse through the _________
Membrane pores; membrane pores
Membrane pores; cell membrane
Cell membrane, membrane pores
Cell membranes; cell membranes
The end result of diffusion is
All net movements of molecules ceases
Some molecules become more concentrated
Determines by the amount of energy expended in the diffusion process
Determined by the rate at which diffusion took place
Which of the following statements is true about osmosis?
Always involves a membrane that is impermeable to at least one kind of solute molecules.
The number of soluble molecules present, not the kind, determines the osmotic pressure
The greater the difference in solute concentrations across the semipermeable membrane, the greater the osmotic pressure difference across the semipermeable membrane
Osmosis always involves difference in solvent concentration
Cells placed in a hypertonic solution will
swell
shrink
neither swell or shrink
This term does not describe the tendency of cell to shrink or swell
Suppose that a woman was running a long distance race. During the race, she lost a large amount of hypo-osmotic sweat. You would expect her cells to
shrink
swell
remain the same
bloat
Suppose that a man is doing heavy exercise in the hot summer sun. He sweats profusely. He then drinks a large amount of distilled water. You would expect his tissue cells to
shrink
swell
remain the same
bloat
Which of the following statements is (are true) about facilitated diffusion?
Net movement is with the concentration gradient
It requires the expenditure of energy
It doesn’t require a carrier molecule
It moves materials through membrane pores
The concentration of fluids in the human intestine tends to be iso osmotic with the blood plasma. The intestinal membrane is essentially impermeable to magnesium salts. If a person ingested a large amount of magnesium salts for treatment of constipation, you would expect his tissue cells to
shrink
swell
remain the same
bloat
A process that requires energy and moves large molecules in solution (i.e., not particulate matter) into cells is called
diffusion
pinocytosis
phagocytosis
exocytosis
Cytoplasm is found in
Between the plasma membrane and the nuclear membrane
the nucleus
throughout the cell
inside the plasma membrane
A large structure normally visible in the nucleus of the cell
Endoplasmic reticulum
mitochondria
nucleolus
lysosome
The cell organelle that is involved in the storage, modification and packaging of secretory materials
Nucleolus
mitochondria
ribosomes
golgi apparatus
Which of the following organelles produces large amounts of ATP?
Nucleus
Mitochondria
Ribosomes
Lysosomes
Which of the following organelles would one expect to be present in large amounts in a cell responsible for secreting lipid?
Rough endoplasmic reticulum
Lysosomes
Smooth endoplasmic reticulum
Ribosomes
Which of the ff functions are red blood cells incapable of performing?
Synthesize ATP
Synthesize new protein
Consume oxygen
Use glucose as a nutrient
In which of the ff organelles is mRNA synthesized?
nucleus
ribosomes
endoplasmic reticulum
peroxisome
The organelle of the cell that serve as a site of protein synthesis
ribosome
lysosome
endoplasmic reticulum
golgi apparatus
Chromosomes disperse to become chromatin during
anaphase
metaphase
prophase
telophase
The major function of meiosis is to ensure that each of the resultant daughter cells
Has the same number and kind of chromosomes as the mother cell
Has one half number of chromosomes as the mother cell
Has one half of the number and one of each pair of chromosomes from the mother cell
Are real daughters and not tomboys
The cell membrane is made (mostly) from a double layer of
phospholipids
hydrolipids
protolipids
phytolipids
What separates the nucleus from the cytoplasm of the cell?
cytosol
organelle
nuclear envelope
nucleolus
Which of the following is found inside the nucleus?
nucleolus
golgi apparatus
organelle
ribosomes
Which organelle digests other, worn-out organelles, as well as food particles and engulf viruses and bacteria?
lysosome
peroxisomes
mitochondria
vacoules
Where are the cells chromosomes stored?
vacoules
mitochondria
nucleus
endoplasmic reticulum
Which organelle is particularly important for the synthesis, folding, modification, and transport of proteins within the cell?
endoplasmic reticulum
golgi apparatus
mitochondria
ribosomes
Which organelle acts as an assembly line where proteins are synthesized from RNA?
lysosomes
ribosomes
nucleus
golgi apparatus
The network of interlinking filaments and tubules that provides a cell with shape and stability is referred to as the
cytoscaffold
cytoskeleton
cytosol
cytostructure
What is the name for the process whereby the membrane of a vesicle fuses with the plasma membrane, allowing it's contents to be released from the cell?
endocytosis
exocytosis
phagocytosis
arthrosis
Genetic information is carried out of the nucleus and to the sites of protein synthesis in the cytoplasm by
DNA
mRNA
RNA
tRNA
