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Terms in this set (60)
A suggested explanation for a problem that can be tested such as a microorganism was causing significant fish kills in a lake would be called a ______.
What is the smallest, basic unit of life?
Homeostasis provides what kind of environment?
Organizing known species of organisms according to their evolutionary relatedness is known as
Of the following, which is a form of logical thinking that uses related observations to come to a general conclusion?
A collection of tissues involved in a common function are known as
The study of the structure and function of single-celled organisms is known as
The type of science that is done in order to understand living things without regard to an ability to directly use that knowledge is known as
Which is a group of the same species living in a geographical area?
The idea that organisms are able to "fit" their environment due to their characteristics is known as
Which is the smallest portion of a substance that retains the properties of an element?
The negative subatomic particles that orbit the nucleus are _______.
Water is an example of a(n) _________.
How do hydrophobic molecules react with water?
Starch is ________.
Carbon usually forms how many bonds with other atoms?
Which are NOT macromolecules (also known as polymers)?
Which of the following includes all the others?
What kind of bond exists between two amino acids in a protein?
A chemical buffer _______.
provides hydrogen ions or removes them to maintain pH.
The idea that mitochondria and chloroplasts likely came from a larger prokaryotic cell engulfing and enslaving a smaller prokaryotic cell is known as the _____ theory.
Which of the following has a cell wall made up of peptidoglycan?
________ is responsible for making lipids (and membrane vesicles).
________ are specialized storage structures in plants (can hold water for rigidity).
_________ is (are) primarily responsible for moving things from one part of the cell to another.
_______ is the "powerhouse" of the cell, known for making ATP.
_______ is the "post office" of the cell, known for sorting and sending proteins and lipids to their final destination.
Prokaryotes do NOT have _____.
membrane bound nuclei
_____ is a cell part responsible for maintaining cell shape, internal organization, and cell movement.
Which type of junctions allows small molecules to pass between cells?
All of the following are associated with endocytosis EXCEPT
secretion of cell products.
To be able to invade host cells, viruses need something to attach to, usually a cell membrane
The concentration of glucose inside of a cell is higher than the concentration outside of that cell, yet glucose continues to enter the cell. This is an example of
A charge difference across a membrane, like what happens with K+ and Na+, is known as the
Which of the following accounts for the cell membrane keeping out polar substances from the cell?
The hydrophobic fatty acid tails of the phospholipids.
The carrier molecules (transporters) used in active transport are
A single-celled freshwater organism is transferred to salt water. Which of the following is likely to happen?
Which of the following is NOT likely to diffuse through a membrane?
Which statement is NOT true?
a. Membranes are often perforated by proteins that extend through both sides of the membrane.
b. Some membranes have proteins with channels or pores that allow for the passage of hydrophilic molecules.
c. Polar substances have an easier time passing directly through membranes than nonpolar substances do.
d. The current concept of a membrane can be best summarized by the fluid mosaic model.
e. The lipid bilayer serves as a hydrophobic barrier between two fluid regions.
Which of the following factors would NOT affect diffusion?
In an enzyme-catalyzed reaction such as X + Y = Z, Z is the
Intermediates are associated with which of the following?
_______ reactions use energy to build complex molecules.
Which of the following binds to an allosteric site in order to change the shape of enzyme so that the substrate won't bind to the active site?
Typically, what molecule is causing feedback inhibition in a metabolic pathway?
the end product of a pathway
Enzymes increase the rate of reaction by lowering what kind of energy?
Essentially, the first law of thermodynamics says that
energy can neither be created nor destroyed.
The second law of thermodynamics states that
energy tends to become increasingly disorganized.
A reaction that releases free energy is known as a(n) _____ reaction.
When a substrate binds to the active site of an enzyme, it changes the shape of the enzyme to help the reaction proceed. What is this model called?
Plants need which of the following to directly carry out photosynthesis?
both H2O and CO2
The final electron acceptor in aerobic respiration is
Pyruvate is regarded as the end product of
Glycolysis typically takes place in the
The oxygen released in photosynthesis comes from
Which of the following conditions is NOT required for Calvin Cycle?
The plant is exposed to light.
The correct sequence of the three processes listed below is:
I - glycolysis II - oxidative phosphorylation III - citric acid cycle
I - III - II
An organism that can produce its own food is called a(n)
The citric acid cycle takes place in the
Four of the five answers listed below are catabolic processes for carbon compounds. Select the EXCEPTION.
a. cellular respiration
c. calvin cycle
d. citric acid cycle
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