BIOLOGY 118 - EXAM 1
April 9, 2007 - VERSION A
..) on your answer sheet.
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If you need clarification for a question, raise your hand & stay in your seat.
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ATP = adenosine triphosphate
LDL = low density lipoprotein
ADP = adenosine diphosphate
mRNA = messenger RNA
BMI = body mass index
centrosome = pair of centrioles
RNA = ribonucleic acid
= carbon dioxide
rRNA = ribosomal RNA
DNA = deoxyribonucleic acid
tRNA = transfer RNA
HDL = high density lipoprotein
rough ER = rough endoplasmic reticulum
In figure A, PAF & epinephrine (EPI) each enhance platelet aggregation that promotes blood clotting, combined, they have a(n) ____
interaction that will ______ clotting.
antagonistic - inhibit
additive - inhibit
synergistic - promote
additive - promote
A scientific theory will be discarded by scientists if
numerous critical tests support it.
a simpler, and more inclusive explanation exists.
tests can’t be done with existing technology.
a new theory explains less than the original.
Place these body divisions in hierarchical order from largest to smallest: 1 - organ, 2 - cell, 3 - organ system, 4 - molecule, 5 - tissue.
3, 5, 4, 2, 1
4, 3, 1, 5, 2
3, 1, 5, 2, 4
4, 2, 5, 3, 1
Which factor is part of a good, double-blind controlled experiment, testing a drug that reduces osteoporosis in women?
A placebo is given to half of the participants.
Women chose whether they take the drug or not.
Scientists measuring the women, know who received the drug.
Scientists can increase sample size by ignoring ethnicity.
The cells of ___________ tissues are ________ to form barriers, secretory or absorptive surfaces.
epithelial - tightly attached to each other
connective - scattered & far apart
neural - tightly attached to each other
muscle - scattered & far apart
A cell with a surface area to volume ratio = ________ has the highest metabolic rate, assuming all other variables are equal.
Which variable, given these normal resting to exercise ranges, is the controlled variable in a negative feedback homeostasis loop?