BIOL 005A Lecture Notes - Lecture 4: Aldehyde, Lactase, Hydrolase
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QUESTION 1
Before undertaking an exercise or nutrition program, whatpreliminary steps should be taken?
Choose an expensive activity; that way you know you've investedmoney in it and be more likely to stay with it. | ||
Go to an exercise physiologist who can teach you how the bodyworks. | ||
Choose an enjoyable activity that you know you will stay withwhether you're alone or in a group. | ||
Get an exercise stress test from a sports medicine doctor who isalso knowledgeable in nutrition. |
QUESTION 2
The most important component(s) of exercise from a health andlongevity standpoint is(are)
the intensity and duration of the activity. | ||
the duration and frequency of the activity. | ||
the frequency and regularity of the activity. | ||
the warm-up and cool-down periods. |
QUESTION 3
Among the physiological benefits of regular exercise, which ofthe following can occur?
Regular exercise will inhibit the blood chemistry responsiblefor the "good" cholesterol. | ||
Regular exercise can be a way to improve mood and relievedepression. | ||
Regular exercise has been shown to increase the need for"energizers." | ||
Regular exercise decreases blood flow to the brain, thereforeactivating endorphins, natural tranquilizers. |
QUESTION 4
By eating a high carbohydrate diet the day before any athleticevent,
muscles will have adequate fuel, i.e., glycogen for thecompetition. | ||
athletes can eat more protein the day of the competition. | ||
less water will be needed the day of the competition sincecarbohydrates are high in water. | ||
all of these. |
QUESTION 5
A person with high blood cholesterol should considerparticipating in an aerobic exercise program such as walking orjogging because aerobic exercise
will raise HDL ("good") cholesterol after a period of trainingand decrease the risk for heart disease. | ||
will cause a sudden increase in the heart rate to near maximallevels which lowers the "bad" cholesterol. | ||
forces more LDL ("bad") cholesterol out of the body throughwaste elimination. | ||
keeps the blood circulating faster, even at rest, thereforecauses a decrease in total blood cholesterol. |
QUESTION 6
For most athletes who are well-nourished, nutrition supplementssuch as protein powders and vitamin pills
dramatically improve performance. | ||
improve performance only moderately. | ||
do not significantly improve performance. | ||
seem to cause a decrease in performance. |
QUESTION 7
In addition to being able to exercise at work, employees whohave access to a Wellness program and fitness facility at the jobsite
is more likely to make positive changes in lifestyle. | ||
has less absenteeism from work. | ||
becomes more educated in health issues. | ||
all of these. |
QUESTION 8
The general recommendation to support activity is to eat adiet
high in protein and low in fat. | ||
low in protein and high in carbohydrate. | ||
high in carbohydrate and low in fat. | ||
high in carbohydrate and high in protein. |
QUESTION 9
Walking is considered the best form of exercise because it
is not expensive. | ||
promotes cardiovascular endurance. | ||
is easy to perform. | ||
all of these. |
QUESTION 10
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Exercise and nutrition are important components of a soundprogram for physically challenged people because they
are investments in good physical health.
help support a positive mental health.
help people face the challenges of life and achieve dreams.
all of these.
Question 1
The antigen specificity of a BCR...
A. | depends on the isotype of that BCR. |
B. | is the same as the antigen specificity of the secreted form of antibody produced by that cell. |
C. | is different for each of the BCRs on a cell. |
D. | is different for each of the Fab regions of the BCR. |
Question 2
All BCRs on the surface of a B cell in a lymph node...
A. | will have the same type of light chain (kappa/lambda). |
B. | will have the same type of light chain with the same exact amino acid sequence. |
C. | will each have a different type of light chain. |
D. | will have a lambda light chain on one Fab and a kappa light chain on the other Fab. |
Question 3
The isotype of an antibody is...
A. | determined by the light chain. |
B. | another word for an immunoglobulin Fab region. |
C. | determined by the heavy chain constant region. |
D. | determined by the Fc portion. |
E. | None of the above are correct |
Question 4
Characteristics of lgG are...
A. | a molecular weight of 900,000 and 10 antigen binding sites in the secreted form. |
B. | 165,000 molecular weight in the monomeric form but it is usually secreted as dimer. |
C. | the presence of more heavy chain constant regions than most antibodies but the lowest concentration in blood. |
D. | 150,000 molecular weight and the highest concentrations of all antibodies in blood. |
E. | None of the above describe IgG. |
Question 5
Characteristics of lgM are...
A. | 900,000 molecular weight and the secreted form has 10 antigen binding sites. |
B. | 165,000 molecular weight in the monomeric form but it is usually secreted as dimer. |
C | .the presence of more heavy chain constant regions than most antibodies but the lowest concentration in blood. |
D. | 150,000 molecular weight and the highest concentrations of all antibodies in blood. |
E. | None of the above describe IgM. |
Question 11
The wings of birds have evolved to facilitate powered flight, but they are also:
Derived from structures that had other functions, such as thermoregulation and sexual display. |
Able to evolve into any other type of structure, given the flexibility of developmental genes. |
Unable to revert back to serving other functions (if they ever had them). |
Certainly only a transition on the way to something else in the future. |
Question 12
Which of the following is TRUE:
For most of life's history, organisms have been multicellular, though hominids only occupy a tiny portion of this history. |
For most of life's history, organisms have been a mixture of uni- and multicellular, through hominids have occupied only a fairly small portion of this history. |
For most of life's history, organisms have been unicellular, and hominids occupy only a tiny portion of the entire span of time in which life has existed on Earth. |
For most of life's history, organisms have reverted back and forth between uni- and multicellular, with a sort of "zig-zag" pattern in which one form of life dominated at any particular time. |
Question 13
There are some phenotypic differences among human populations that reflect adaptation to different environments. This indicates that:
Some populations are innately superior to others, because they have what it takes to prevail in those environments. |
Selection has been active on these populations. |
There are candidates for a program of selective breeding wherein we can pinpoint universally desirable characteristics. |
Admixture among human populations is decreasing, and that continued admixture can only mean that humans must stop adapting to their environments. This is neither "good" or "bad", it's simply the way that selection works. |