Whose work-related on spontaneous generation very first demonstrated the presence of a really heat-resistant kind of bacteria the are referred to as endospores?Select one:a. Schwannb. Redic. Tyndalld. Pasteur
Which that the following differentiate the field of microbiology native other fields of biology?Select one:a. The size of the biology studied.b. The techniques used to examine organisms regardless of your size.c. Both the size of the biology studied and also the methods employed in the study of organisms.d. No the dimension of the biology studied nor the approaches employed in the study of organisms regardless of their size.
You are watching: If you forgot to heat fix a smear before doing a gram stain, which of the following might occur?
The concept that life organisms arise indigenous nonliving product is calledSelect one:a. Biogenesis.b. Cabinet theory.c. Voluntary generation.d. Germ theory.
The most important element of agar that renders it a useful ingredient because that solidifying media for bacterial culture isSelect one:a. The provides fantastic nitrogen source for bacteria.b. Bacteria are unable to rest it under so it stays solidified.c. The melts at 100oC and also solidifies in ~ temperatures listed below 50oC.d. It provides terrific carbon and also energy source for bacteria.
If you forgot to heat fix a smear before doing a Gram stain, i beg your pardon of the following can occur?Select one:a. The stains would certainly not adhere to the bacteria.b. The smear might not adhere to the slide.c. The decolorization action of the Gram stain would not occupational properly.d. Gram-positive and also Gram-negative bacteria would certainly both stain purple.
What is the kind of stain offered in infection electron microscopy once a specimen is spread out top top a slim film v uranyl acetate (which walk not permeate the specimen)?Select one:a. Freeze-etching.b. An easy staining.c. Shadow staining.d. An unfavorable staining.
If the decolorizer is left top top too lengthy in the Gram-staining procedure, gram-positive organisms will certainly be stained __________ and also gram-negative organisms will be stained __________.Select one:a. Purple; blueb. Purple; colorlessc. Purple; pinkd. Pink; pink
A specimen has been all set for viewing with a transmission electron microscope, using uranyl acetate together a negative stain. The area stained by the uranyl acetate will certainly be ________________ electron dense compared to specimen itself.Select one:a. Moreb. Lessc. Equally
Which that the adhering to has not been taken into consideration as a "gold standard" taxonomic technique applied to types designation.Select one:a. DNA-DNA hybridization (DDH)b. Melting temperature that the DNA (a enjoy of the G+C content)c. Median nucleotide identityd. Microscopic cell phenotype
In the nitrogen cycle, i beg your pardon of the following steps requires removal that nitrogen native the environment by bacteria?Select one:a. Ammonificationb. Denitrificationc. Nitrificationd. Nitrogen fixation
Fungi space able come reproduce asexually by creating conidiospores and also sporangiospores. Which of the following is specific explanation for why it is valuable that lock are likewise capable of sexual reproduction?Select one:a. Asexually developed offspring are more likely to compete for resources and also will kill off the parental fungi.b. Fungi normally produce sexually yet produce asexually in harsh conditions such as serious drought.c. Offspring from two parents may have variations in kind and function that add to survival of the species. Sexually developed offspring have traits from both parents and may build variations that give them an advantage for survival.d. Sex-related reproduction produces much more offspring in ~ a much faster rate 보다 spore formation
Offspring from 2 parents may have actually variations in form and function that add to survival of the species.
In a laboratory bacterial cell culture that has been infected through a virus, plaques are locations in whichSelect one:a. Bacterial cells space resistant come the virus and also have not been infected.b. Over there is no nutrient accessible for the bacteria come grow.c. The virus has actually spread and also left behind the stays of dead cells.d. The virus has actually not yet infect that area the cells
The sun"s energy is yielded as discrete packets that travel as waves and are calledSelect one:a. ATP.b. Carotenoids.c. NADP.d. Photons
Which of the adhering to is a properties of aerobic respiration?Select one:a. Oxygen-containing ion act together the last electron acceptors in electron transport. This is a characteristic of anaerobic respiration. Oxygen is the last electron acceptor in aerobic respiration.b. The process includes glycolysis, the Krebs cycle, and also the electron carry chain.c. Aerobic respiration produce a complete of 2 ATP molecules.d. Aerobic respiration produces lactic acid.
In perfect protein synthesis in a prokaryote, what an easy message is carried by a dedicated codon that has no corresponding tRNA?Select one:a. "Fold peptide chain."b. "Terminate here." The committed codon signals the finish of protein synthesis; there is no RNA since it is only needed if the procedure is come continue.c. "Add cofactor."d. "Clip starting amino acid."
Microbial drug resistance have the right to be caused by mutations or by arrival of brand-new genes right into a population. Which of the complying with can just be brought about by the introduction of brand-new genes right into a population?Select one:a. A metabolic pathway in the bacter is close up door downb. Binding sites for the medicine are diminished in number or affinity come the drugc. New enzymes that inactivate the drug space synthesized This deserve to only take place if brand-new genes room introduced right into the population.d. Absorb of the drug right into the bacterium is diminished
new enzymes the inactivate the drug space synthesized This deserve to only happen if brand-new genes are introduced into the population
Why perform the hands, feet, and also breasts have an ext lymphatic vessels for organize defense than other areas of the human being body?Select one:a. They have a high danger for infection due to frequent contact. The hands and feet and also breasts room the most most likely sites ~ above the body for call with infectious agents.b. They have actually a greater density of nerves.c. Lock require complex movement that fluids from the extremities.d. Castle are situated a lengthy distance native the thalamus.
See more: 1A) In What Ways Are Hydrogen Bonds And Ionic Bonds Similar?
Penicillin features as one antimicrobial certified dealer by inhibiting bacterialSelect one:a. Cell wall synthesis. Penicillin belongs to a course of antibacterial agents that interfere v the production of the material that renders up the bacterial cell wall. The bacteria must constantly replace this material or lock will become susceptible come rupture due to osmotic pressure.b. Folic mountain synthesis.c. Protein synthesis.d. RNA and DNA function.
Fundamentals of Biochemistry: Life at the molecule Level5th EditionCharlotte W. Pratt, Donald Voet, Judith G. Voet