Reference no: EM1396902
1- Diseases caused by eukaryotic parasites are much harder to treat than bacterial infections. What is the reason?
Their cells are larger than bacterial cells.
They don't have ribosomes
They do not divide
Their cells are structurally similar to human cells.
2- Given that a cell's structure reflects its function, which of the following functions do you think is characteristic of a cell with a large endoplasmic reticulum and Golgi apparatus?
Secretion of antibodies
Fat storage
Rapid replication of genetic material
Movement
3- A scientist is studying a single celled eukaryote and the bacteria that live inside it. What organelles will she observe in BOTH organisms?
ribosomes
nucleus
endoplasmic reticulum
Both A and B are correct
4- While using a microscope to examine the cell of an unknown organism, you see that the cell has a nucleus, a cell wall, ribosomes and mitochondria. What kind of organism do you think this cell belongs to?
This is most likely a bacterium
There is not enough information here to determine what kind of cell this is.
This is most likely a plant cell
This is most likely an animal cell
5- Which one of the following biomolecules is least likely to be a component of a cell membrane?
Nucleic acids
Carbohydrates
Lipids
Proteins
6- If a cell is placed in a hypotonic solution such as pure water, what is likely to happen?
The cell will remain at equilibrium and will not change in volume.
The cell will swell and may burst.
The cell will shrink.
7- If a cell is placed in a very salty or sugary solution, it is likely to shrink. Why is this likely to happen?
The cell will shrink because salt ions or sugars will damage the cell membrane, causing it to leak.
The cell will shrink because ions and other particles will move out of the cell.
The cell will shrink because water will flow down its concentration gradient, out of the cell.
8- What is the role of cholesterol in the membrane?
transport materials across the membrane
cellular identification
help maintain fluidity
adhesion
9- Transport proteins must be peripheral proteins.
True
False
10- A set of erythrocytes is placed in a beaker of 9% NaCl. The internal solute concentration of erythrocytes is 0.9%. What will happen to the cells?
They will intake potassium ions to balance the outside sodium ions.
nothing
They will synthesize water.
They will shrivel.
They will swell and burst.
11- Consider the following animal cells: antibody producing white blood cells, hormone-producing cells, and intestinal cells producing digestive enzymes. Which organelles would not be abundant in them?
Rough endoplasmic reticulum
Cytoskeleton
Ribosomes
Golgi apparatus
12- What is the most basic unit of structure and function in living organisms?
the plasma membrane
the cell
the nucleus
the atom
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