Put the following terms in order from simplest to most complex: organ systems, tissues, cells, organs
Cells, tissues, organs, organ systems
100
The cell theory states that:
a. all cells have nuclei that contain genetic information
b. all cells regenerate and contain the same basic structure
c. living organisms are composed of cells that arise from preexisting cells
d. organisms that lack certain organelles reproduce by binary fission
c. living organisms are composed of cells that arise from preexisting cells
100
A structure that performs a specialized function within a cell is known as a(n) __________.
Organelle
100
In order to be considered organic, a compound must contain which 2 elements?
Carbon and hydrogen
100
What is the highest magnification that can be obtained with a microscope that has a 10x eyepiece with 10x and 43x objectives?
10 x 43 = 430x
200
In the binomial nomenclature system, which 2 classification groups provide the scientific name of an organism?
Genus and species
200
Name two structures that are found in plant cells but not in animal cells.
Cell wall and chloroplasts
200
What is the main function of the plasma membrane?
Controls what enters and leaves the cell
200
Which two of the following four substances would NOT be considered organic?
a. C6H12O6
b. H2O
c. C12H22O11
d. NaCl
b. H2O
d. NaCl
200
On a graph, which variable goes on the x-axis? Y-axis?
Independent variable goes on x-axis, dependent variable goes on y-axis
300
An organism’s scientific name is Escherichia coli. The term “coli” refers to this organism’s __________.
species
300
What is the function of the nucleus?
Controls all the activities of the cell
300
What is the function of the chloroplast?
Uses energy from sunlight to make sugar through the process of photosynthesis
300
Glycogen and glucose are examples of the category of organic compounds known as __________.
Carbohydrates
300
A student adds several drops of iodine solution to a sample of onion tissue. Which cell component would become more visible under a microscope as a result of this procedure?
Nucleus
400
An investigation was designed to determine the effect of ultraviolet light on mold spore growth. Two groups of mold spores were grown under identical conditions, except one group was exposed only to ultraviolet light, while the other group was grown in total darkness. What was the control in this investigation?
The group of mold spores grown without receive any ultraviolet light
400
What is the function of the ribosome?
Makes proteins
400
What is the function of the vacuole?
Stores things like sugar, salt, and water
400
Living things are primarily composed of which four elements?
Carbon, hydrogen, nitrogen, and oxygen
400
All the chemical activities of an organism are known as the organism’s __________.
Metabolism
500
100 lab rats were used in a study to determine the effect of aspirin on the frequency of heart attacks. 50 rats were each given a daily injection containing 5 mg of aspirin for 1 year. On a daily basis each of the other 50 rats would most likely receive an
a. oral dose of 100 mg of aspirin
b. injection of 5 mg of water
c. injection of 100 mg of aspirin
d. oral dose of 50 mg of water
b. injection of 5 mg of water
500
What is the function of the centriole?
Used during cell division
500
What is the function of the lysosome?
It contains enzymes that breaks down substances
500
Animals commonly store energy in the form of __________ and __________.
Glycogen and lipids
500
Describe 2 functions of the cell wall.
1. Gives strength and support
2. Prevents cells from exploding when filled with water