The main difference between prokaryotic and eukaryotic cells is that..
eukaryotic cell have a more advanced organization
What characteristic do all living things share?
They contain DNA
Which of these is responsible for the “rough” appearance of endoplasmic reticulum?
Which of these statements is supported by the data shown in the table?
Eukaryotic cells vary in covering and in food production
How is the prokaryotic bacterium in the diagram different from a eukaryotic cell?
It has no membrane-bound nucleus
Which of these statements best summarizes the cell theory?
Cells are the building blocks of living things
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Which of these functions most like the “brain” of a cell?
Cells from which of the following organisms would be expected to contain cell walls?
Which pair of structures best shows that plant cells have functions different from animal cells?
Chloroplasts and cell walls
In the cell membrane model shown above, the molecules which move large molecules into and out of the cell are known as
These words were written by Robert Hooke in 1665. The pores or cells that Hooke described were really
When an animal eats, food stays in the stomach for a period of time. When a unicellular organism, such as Paramecium, takes in food, the food is contained in which organelle?
In the human body, the circulatory system transports and delivers substances. Within the cell, which organelle performs a similar function?
Which of the following organelles is present in both prokaryotes and eukaryotes?
Compared to a skin cell, a muscle cell is likely to have more
Amino acids link together by peptide bonds to form proteins. In which cellular organelle would this process occur?
Which characteristic of prokaryotic organisms makes them different from eukaryotes?
Prokaryotic cells do not have membrane-bound organelles
A bacterium will construct different proteins to metabolize the sugars lactose or glucose, depending on which one it detects in the outside environment. What part of the bacterium allows it to recognize different substances in the outside environment?
The eukaryotic organism described above should be classified as
A cell with numerous ribosomes is probably specialized for
What repackages proteins into forms the cell can use, expel, or keep stored?
Some unicellular organisms are motile (have the ability to move) and some are nonmotile. Which cellular structures are associated with movement?
A student wants to view cells under the compound microscope at a total magnification of 400X. If the eyepiece is 10X, which of the following objective lenses should be used?
Which of the following came first in the scientific study of living things?
Chamber A contains 40% helium and Chamber B contains 20% helium. Chambers are connected by a tube the molecules are free to cross. Which of the following will occur?
some helium will move from chamber A to chamber B
What will happen to an animal cell placed in a salt water solution?
The cell will shrink