A desert is classified as a desert because of its
lack of rainfall.
A lake will turn over as _ approaches.
A species that must live in a
The reason animals need a continuous supply of oxygen is to
make carbon dioxide.
dispose of carbon
carry out glycolysis.
obtain energy from their
Gills are unsuitable for animals living on lan
From Investigating Life, "Hermaphrodites and Parasites Meet the Red
Queen": Which of the following is correct with respect to the investigation?
Roundworms reproduced sexually more often when exposed to diseasecausing bacteria.
1. A platypus senses its prey not only through touch, but also by sensing electricity. Why would the
prey of a platypus generate an electrical field?
Muscle contractions generate an electrical current.
The prey use the electrical fields to attract mates.
1. The three major roles of the human nervous system are:
sensory integration, glandular response, and motor response
seeing, feeling, and hearing
sensory input, sensory integration, and motor response
smooth muscle response, cardiac muscle res
1. Why is cellular respiration necessary for living organisms?
Cellular respiration is the conversion of glucose into energy for all cells to perform
activates to keep organisms alive. Without cellular respiration, cells will die. If The
THIS TEST IS 100% CORRECT
Which of the following statements regarding circulatory systems is true?
The smallest blood vessels in the body are veins.
A circulatory system is necessary in any animal whose body is too large or too complex
The two closely allied organ systems that allow for running, swimming, and flying
under the direction of the nervous system are the:
skeletal and endocrine
muscular and endocrine
muscular and skeletal
1. A concentration gradient affects the direction that solutes diffuse. Describe how
molecules move with respect to the concentration.
The concentration gradient is the change in molecular density(unit mass per volume of
space) over a gi
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1. In this figure, output B from the light reactions is _, while output C from the carbon
reactions is _.
water; carbon dioxide
1. What is ATP synthase?
Tools of Cell Biology
Research in cell biology depends on
available laboratory methods and
Many important advances have directly
followed the development of new
methods that have opened novel
avenues of investigation.
Tools of Cell Bio
Primary function is to obtain oxygen for use by body's cells & eliminate carbon dioxide that cells
Includes respiratory airways leading into (& out of) lungs plus the lungs themselves
Pathway of air: nasal cavities (or oral cav
1. Questions and Problems, 22.1
Many cancers seem to involve environmental factors. Why, then, is cancer called a
Ans: Cancer has been called a genetic disease because it results from mutations of genes
that regulate cell growth and divis
1. Questions and Problems, 24.1
The following data for the M-N blood types were obtained from native villages in Central
and North America:
Sample Size M
M and LN alleles for the two grou
Biotechnology includes a large variety of techniques applied to the manipulation and utilization
of genetic informationparticularly human genetic information.
A variety of testing and screening techniques have arisen which use the tool
The Immune System has two major branches. Although there are significant differences between
the operations of the two branches of the immune system, they are similar in many key ways,
including the problem of manufacturing antigen-speci
A mutation is a permanent change in a gene (or more precisely in the DNA of the gene). We
know a lot more about these now than they did back in the 1920s. This shouldn't surprise anyone.
The early geneticists thought all mutations were harm
Solving Genetics Problems III: Sex Linkage
Some special operations are necessary when solving a problem about a gene which is carried by
the X or Y chromosome. These genes are called sex linked. A gene on the X chromosome is X
linked; one on the Y chromos
Thrombocytopenia is a condition where platelet counts are lower than normal, potentially
leading to mild to serious bleeding. This bleeding can happen inside the body (internal bleeding)
or on the skin. A normal platelet count is 150,000 to 450,000 platel
Factors that affect the Oxygen-Hemoglobin Dissociation Curve:
The oxygen-hemoglobin dissociation curve 'shifts' under certain conditions. These factors can
cause such a shift:
increased levels of
Weeks 1 Vaughn Weeks Dr. Isaacs Biology 301-003 26 October 2010 Starving in an Ocean of Glycogen The inner workings of a human being have captivated the scientific community for centuries. What makes this work? Why does the body do that? Questions like th