Microbiology BIO 310: Lecture exam 1 – summer 2022-Get Answer Now
Question 13 out of 3 points
The molecule adenosine triphosphate (ATP) is considered to be an excellent energy source because of the existence of the high energy bond between the terminal _____ group and the remainder of the molecule.
Question 23 out of 3 points
In a given quantity of water molecules, one will find _____: (Hint: For this question, you have to consider both intramolecular and intermolecular bonds here.)
Which is NOT true of algae?
Question 43 out of 3 points
Human beings are trying to use genetically engineered viruses for gene therapy. For example, the insulin gene has been cloned into a virus and used to “infect” a diabetic with the hope that the virus will stay permanently in the pancreatic cells and help the person produce insulin.
Question 53 out of 3 points
The flask that Pasteur used to disprove the theory of spontaneous generation had ____:
Question 63 out of 3 points
Some bacteria have unusual metabolic properties. Some can even degrade (break down) complex toxic compounds like pesticides. This capability is known as _____.
Microorganisms are important in the ecosystem for cycling of elements. For example, somemicroorganisms that live in the roots of certain legume plants, ex. soy beans are responsible for converting the very stable nitrogen-containing molecule _____back into the biologically useful molecule ______ (which then can be converted into other nitrogen-containing molecules).
Question 83 out of 3 points
Calcium has an atomic weight of 40 and an atomic number of 20. That means it has 20 protons and 40 neutrons in its nucleus.
Question 93 out of 3 points
Which of the following would NOT be a component of a nucleotide that is part of RNA?
Which statement would NOT be correct about glucose?
Question 113 out of 3 points
C-14 and C-12 are isotopes. This means that C-14 and C-12 both have the same number of _____ in the nucleus but they differ in the number of ______ in the nucleus.
Question 123 out of 3 points
The sequence of steps described in Koch’s postulates helps scientists determine ____:
Question 133 out of 3 points
Which of the following is FALSE of fungi?
The majority of lipid found in the cell membrane of the typical eubacteria is phospholipid. Which is FALSE of this type of organic molecule?
Question 153 out of 3 points
Approximately 400 years ago, the scientist ____ performed an experiment involving maggots on decaying meat. By covering the jar containing the meat with fine gauze, the entry of flies would be prevented and maggots would not develop. This contributed to disproving the idea of spontaneous generation.
Question 163 out of 3 points
The HIV virus that causes AIDS first came to public attention in the early 1980s. Because of the impairment of the immune system in individuals infected with the virus, these individuals often suffer from unusual infectious disease agents that normally do not cause disease in humans. As mentioned in class, these infections are sometimes referred to as opportunistic infections.
Question 173 out of 3 points
Biochemical compounds called Bti isolated from the microorganism Bacillus thuringiensis can be used to kill insects such ad mosquito larvae and corn borers. The gene for the Bti product that is specific for the corn borer has even been placed into the chromosomes of corn to make the plants resistant to attack by these insects.
Question 183 out of 3 points
The strain of flu virus know as swine flu caused a world-wide outbreak (pandemic) several years ago. The flu is somewhat remarkable for its genome’s ability to mutate which is why it can be responsible for these pandemics and why every year individuals who are considered to be at high risk should be vaccinated against the most current circulating flu strains.
Question 193 out of 3 points
A solution with a pH of 4 ____ than a solution that has a pH of 2.
Question 203 out of 3 points
Unsaturated and saturated fatty acids can be found in phospholipids and triglycerides. An unsaturated fatty acid means that the carbon skeleton has the maximum number of hydrogen atoms covalently bound to carbon and the fatty acid contains no double bonds.
Question 213 out of 3 points
Chlorine and sodium atoms combine readily to form a molecule because both atoms tend to donate electrons from atoms to both form anions.
Question 223 out of 3 points
Archaebacteria are unusual prokaryotic microorganisms that are in their own domain. Many of these microorganisms have been found in very hostile environments such as very salty environments such as the Dead Sea or hot springs. They are sometimes known as ______ because of the conditions they live under.
Question 233 out of 3 points
Which is NOT true about viruses?
Question 243 out of 3 points
The yeast, Saccharomyces cerevisiae, commonly found in packages in the grocery store is useful to us human beings when it comes to both food and drink. In bread production, the yeast ferment sugar to produce ____ gas to cause the bread to rise. In wine production, the yeast ferment sugar in grape juice to produce ____ which some of like to consume on occasion.
Question 253 out of 3 points
Several scientists made important contributions to the field of microbiology. The scientist ____ demonstrated the value of handwashing as a way to prevent transmission of bacteria from one person to another and _____ demonstrated that the synthetic arsenic-containing compound, salvarsan, was effective against syphilis.
Question 263 out of 3 points
Having normal microbiota in and on the human body is healthy for us. For example, having non-pathogenic Escherichia coli in the intestines is helpful because they produce vitamin K and some B vitamins that we human beings need to get in our diets, etc. because we can’t synthesize them.
Water is often talked about being the universal solvent. The reason this is so is due to its ability to completely dissociate into protons and hydroxide groups.
Question 283 out of 3 points
The physician that decreased the amount of infection resulting from a surgical wound by treating the wound with phenol (carbolic acid) was _____ and the physician ___ was responsible for our first “vaccination” attempts against smallpox after hearing from a cow maid that she never seems to get smallpox after she developed the milder disease, cowpox.
Question 293 out of 3 points
In class you learned about different types of chemical reactions and were given examples. The chemical reaction whereby the reactants glucose and fructose are covalently linked together to form the products sucrose + water is an example of a(n) _____ reaction.
Question 303 out of 3 points
The infectious disease entity known as a prion is associated with causing which disease?
Question 313 out of 3 points
As you know, microorganisms can be found in sewage and some are pathogenic. However, some microorganisms can be involved in the sewage treatment before the water is transferred back into the environment. There are even some microorganisms involved in the sewage treatment that can convert certain organic molecules into methane which then can be used to help run the waste water treatment plant.
Question 323 out of 3 points
The two strands of double-stranded DNA are held together by forming “base pairs’ between the nucleotides A and T and nucleotides G and C. The types of chemical bonds (often represented by dotted or dashed lines) that exist between the nucleotides involved in holding the two strands of DNA together are known as ____ bonds.
Question 333 out of 3 points
Which of the following is FALSE about protozoa?
Question 343 out of 3 points
The _____ structure involves the amino acid sequence of a polypeptide or protein whereas the _____ structure involves the interaction of more than one polypeptide chain.
Question 353 out of 3 points
Soon after penicillin became widely used to treat Staphylococcus aureus infections, S. aureus became widely resistant to penicillin. To counteract that problem, the penicillin derivative methicillin was developed and used. However, methicillin-resistant S. aureus (MRSA) strains have emerged as a major problem, especially in hospital settings.
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