121⟩ Which of the following has the lowest blood pressure
1. aorta
2. carotid artery
3. femoral artery
4. posterior vena cava
Answer: D
Biology
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198 Biology Questions And Answers
122⟩ Which of the following is NOT in the class insecta
1. bees
2. moths
3. fireflies
4. spiders
Answer: D
123⟩ Plant cells differ from animal cells in that only plant cells possess
1. a nucleus
2. mitochondria
3. a cell wall
4. lysosomes
Answer: C
124⟩ Four chromatids would be considered a
1. mutation
2. non-disjunction
3. tetrad
4. synapses
Answer: C
125⟩ The purine bases are
1. adenine and guanine
2. adenine and cytosine
3. thymine and cytosine
4. uracil, thymine, and cytosine
Answer: A
126⟩ What does boiling do to an enzyme?
Enzymes are denatured (their shape is changed so it doesn't work) when boiled.
127⟩ What is black mold?
Mold is a fungus. Black mold is not an official term, since it is impossible to tell with the naked eye what type of mold is present, and many of them appear black or dark gray.
Susan Stewart, in her article in the New York Times, writes, "There are 800 to 1,000 identified molds, according to L. Claire Macdonald, laboratory manager at San Air Technologies Laboratory, a microbial testing firm in Richmond, VA. . . . The most common geniuses of mold in homes are Aspergillus, Penicillium and Cladosporum, she said. Each also manifests in various species, as in Aspergillus parasiticus. Rarer but scarier is Stachybotrys, the mold that is often called 'toxic.'"
128⟩ In which of the following areas of the human body is the olecranon process found
1. hip
2. wrist
3. shoulder
4. elbow
Answer: D
129⟩ A good light microscope has a resolving power of about
1. 0.5 millimeters
2. 0 .5 nanometers
3. 0.5 microns
4. 5 nanometers
Answer: C
130⟩ Darwins finches are an example of evolution of a species by the
1. Hardy-Weinberg equilibrium
2. genetic drift
3. founder effect
4. macroevolution
Answer: C
131⟩ Commensalism is when
1. both species benefit
2. neither species affects the other
3. one species benefits while the other is unaffected
4. both species are harmed
Answer: C
132⟩ Which of the following responses do auxins NOT typically produce in plants
1. cell elongation
2. fruit maturation
3. xylem differentiation
4. pollen tube growth
Answer: D
133⟩ Plant tissues are generally divided into four main types
1. dermal, vascular, ground, meristematic
2. connective, vascular, ground, meristematic
3. vascular, ground, meristematic, mesenchymal
4. vascular, ground, meristematic, mesodermal
Answer: A
134⟩ Which of the following is NOT true about toxic shock syndrome
1. it is not known to occur in males
2. it is caused by a bacteria
3. up to 15% of healthy women harbor the causative germ in their vaginal flora
4. it is associated with infrequent changes of super absorbent tampons
Answer: A
135⟩ What is water loss through the stomata of a plant called
1. condensation
2. liquidation
3. transpiration
4. exchange
Answer: C
136⟩ Spallanzani, Pasteur, and Reti were
1. Italian scientists
2. scientists involved with dispelling the theory of continuous generations
3. scientists involved with dispelling the theories of spontaneous generation
4. scientists who all began working as lens grinders
Answer: C
137⟩ Which of the following is NOT one of Kochs Postulates
1. the specific causative agent must be found in every case of the disease
2. the disease organism can be isolated in impure culture
3. inoculation of a sample of the culture into a healthy susceptible animal must produce the same disease
4. diseased organisms must be recovered from the body of the inoculated animal
Answer: B
138⟩ Which germ layer in mammals is predominantly responsible for forming the nervous system?
Ectoderm
139⟩ What kind of microscopy does the following describe Samples are treated with an electron-dense material and then cut into thin layers. While inside the microscopes column, electrons that are passed through the sample and differentially scattered to show a silhouetted image on a phosphorescent screen
Transmission Electron Microscopy
140⟩ Which of the following is most accurate about the pasteurization of milk
1. it makes milk taste better
2. it kills all bacteria
3. it lowers the milk’s pH
4. it reduces the population of bacteria
Answer: D
