Description : The no. of generations per hour in a bacteria is a. Growth rate b. Generation time c. Sigmoid curve d. None of these
Last Answer : Ans: B
Description : What is exponential growth How does Hardin relate this to the practical problems that we must face in the next few generations?
Last Answer : Need answer
Description : Starvation proteins are produced by a culture during which of the following segments of the growth curve? A - Lag phase B- Exponential phase C- Stationary phase D- Death phase
Last Answer : Stationary phase
Description : Exponential phase of growth curve of bacteria is of limited duration because of A.rise in cell density B.accumulation of toxic metabolites C.exhaustion of nutrients D.all of these
Last Answer : D.all of these
Description : Which one of the following statements is NOT true of the bacterial chromosome? a. It Is Located In The Nucleoid. b. It Usually Isa Single, Circular Molecule. c. Some Genes Are Dominant To Others. d. It Usually Is Haploid.
Last Answer : c. Some Genes Are Dominant To Others.
Description : The function of a viral capsid is A.protection against the viral genome from physical and enzymatic destruction B.providing binding sites that enable the virus to attach to specific receptor sites on the host ... C.serving as a vehicle of transmission from one host to another D.all of the above
Last Answer : D.all of the above
Description : The maximum growth rate occurs in (a) stationary phase (b) senescent phase (c) lag phase (d) exponential phase
Last Answer : (d) exponential phase.
Description : The world population growth rate at a certain reference year was 3.5%. Assuming exponential growth of population, after how many years, the population of the world would have increased by a factor 16 ? (A) ~ 80 years (B) ~ 40 years (C) ~ 160 years (D) ~ 320 years
Last Answer : Answer: A
Description : What does the older generation think of the younger generation's music?
Last Answer : Get off my lawn.
Description : Forecoming generations are less adaptive than their parental generation due to :
Last Answer : Forecoming generations are less adaptive than their parental generation due to : A. Natural selection B. Mutation C. Genetic drift D. Adaptation
Description : EDP ( Entrepreneurship Development( Programmes) is required to help – a) Existing entrepreneurs b) First generations entrepreneurs c) Future generation entrepreneurs d) None of the above
Last Answer : c) Future generation entrepreneurs
Description : Reciprocal of sphericity is termed as the (A) Specific surface ratio (B) Shape factor (C) Sauter diameter (D) Surface area per unit mass
Last Answer : (B) Shape factor
Description : A bacterial species generation time would be determined during the phase. a. decline b. lag c. log d. stationary
Last Answer : c. log
Description : Assertion: Under unlimited resource conditions, popultion can show an exponential growth curve. Reason: The maximum possible number of individuals can
Last Answer : Assertion: Under unlimited resource conditions, popultion can show an exponential growth curve. Reason: The ... Reason are false, then mark (4).
Description : Difference between exponential and arithmetic growth? -Biology
Last Answer : answer:
Description : The formula for exponential population growth is
Last Answer : The formula for exponential population growth is A. Environmental resistance B. Reproductive potential C. Growth rate D. Carrying capacity
Description : What Exponential growth of organisms would eventually lead to what?
Last Answer : overpopulation
Description : When does exponential growth of a population stop?
Last Answer : Exponential growth may occur in environments where there are few individuals and plentiful resources but when the number of individuals become large enough resources will be depleted slowing the growth in exponential growth.
Description : What is exponential growth?
Last Answer : Growth rate that becomes ever more rapid in proportion to the growing total.
Description : 10. The formula of exponential population growth curve, is (a) dN/dt = rN (b) dt/dN rN (c) dN/rN = dt (d) rN/dN = dt
Last Answer : 10. (d) rN/dN = dt
Description : Concentration range (given as weight of gas per unit chamber volume) for ethylene oxide is A 15–100mg/L B 800–1200mg/L C 120–180mg/L D 1000–1200mg/L
Last Answer : B 800–1200mg/L
Description : The interval of time between successive reproductions is called a. Doubling time b. Generation time c. Incubation time d. Fission time
Last Answer : b. Generation time
Description : During the stationary phase of bacterial growth, the population of living cells is _____ the population of dying cells. a. greater than b. smaller than c. equal to d. increasing faster than
Last Answer : c. equal to
Description : .Which is most likely to be exposed on the surface of a gram-negative bacterium? A.Pore protein (porin) B.Protein involved in energy generation C.Lipoteichoic acid D.Phospholipids
Last Answer : A.Pore protein (porin)
Description : Which is most likely to be exposed on the surface of a gram-negative bacterium? A- Pore protein (porin) B- Protein involved in energy generation C- .Lipoteichoic acid D- Phospholipids
Last Answer : Pore protein (porin)
Description : What process was studied by Redi and Spaltanzani? a. Spontaneous generation b. Fermentation c. Variolation d. Antisepsis
Last Answer : a. Spontaneous generation
Description : Which multiplier gives a faster rate of increase, exponential or logarithmic?
Last Answer : Exponential. Try exponentially putting money on a checker board, start with square one with one a penny…
Description : Direct methods to measure bacterial growth would include all the following except the a. total bacterial count b. microscopic count c. turbidity measurements d. most probable number
Last Answer : c. turbidity measurements
Description : A stack in a digital computer isa partofthe_ ALU CPU a. b. c. Memory unit d None of these
Last Answer : c. Memory unit
Description : Pick out the wrong statement. (A) Reciprocal of the resistance to heat flow is called thermal conductance (B) Unit of thermal conductance is W/°K (C) Thermal conductance of a wall of thickness 'L', thermal conductivity 'k' and heat flow area 'A' is kL/A (D) None of these
Last Answer : (C) Thermal conductance of a wall of thickness 'L', thermal conductivity 'k' and heat flow area 'A' is kL/A
Description : Pick up the correct statement from the following: (A) The power of a lens is the reciprocal of its focal length (B) The unit of power of the lens is Diopter (C) The power of two or more thin lenses in contact is the power of the combination of the lenses (D) All the above
Last Answer : (D) All the above
Description : Do all bacteria require oxygen for growth?
Last Answer : Many bacteria are aerobic; that is, they require oxygen to grow and perform the biochemical reactions of their metabolism. There are, however, a large number of bacterial species that are ... obligate anaerobes, while others are facultative anaerobes, meaning that they live with or without oxygen.
Description : One indirect way to determine microbial growth is using a _____. a. UV light b. Spectrophotometer c. Light meter d. Radioactive counter
Last Answer : b. Spectrophotometer
Description : When the Exxon Valdez oil spill occurred, technologists "fertilized" the oil-soaked water with _____ to modify the environment and stimulate he growth of naturally occurring microorganisms. a. nitrogen sources (e.g., urea) b. phosphorus compounds c. other mineral nutrients d. A-C above are correct
Last Answer : d. A-C above are correct
Description : Some contemporary products already obtained by plasmid technology include a. interferon b. insulin c. human growth hormone d. A-C above are correct
Description : Which one of the following statements is true of fungal growth? a. Most fungi grow best at 37 degrees C. b. Most fungi, with the exception of yeasts, are anaerobic. c. Most fungi thrive under mildly acidic conditions. d. Most fungi grow in extreme environments.
Last Answer : c. Most fungi thrive under mildly acidic conditions.
Description : Which one of the following best describes the growth conditions for a typical fungus? a. pH 3; 23°C; no oxygen gas present b. pH 8; 30°C; no oxygen gas present c. pH 6; 30°C; oxygen gas present d. pH 3; 23°C; oxygen gas present
Last Answer : c. pH 6; 30°C; oxygen gas present
Description : One of the practical applications of genetic engineering is the bacterial production of ____. a. human insulin. b. human growth hormone c. blood clotting factors VIII and IX d. antiviral proteins e. all of the above
Last Answer : c. blood clotting factors VIII and IX
Description : .A musty or muddy odor of the fish is attributed to A.the growth of Streptomyces species in the mud at the bottom of the body of water B.the mud at the bottom of the body of water C.the growth of Pseudomonas species in the mud at the bottom of the body of water D.none of the above
Last Answer : A.the growth of Streptomyces species in the mud at the bottom of the body of water
Description : Which of the following (s) is/are the major spoilage of soft drinks from the marked growth of yeasts and bacteria? A.Cloudiness and ropiness B.Flat sour spoilage C.Superficial fungal spoilage D.Pin-spot molding
Last Answer : A.Cloudiness and ropiness
Last Answer : Cloudiness and ropiness
Description : Which of the following chemotherapeutic agents may affect the growth of Campylobacter jejuni? A- .Vacomycin B- Polymyxin C- Trimethoprim D- None of these
Last Answer : None of these
Description : Quantitative measurement of bacterial growth can be carried out by measuring A-.cell count B- .cell mass C- .cell activity D- .all of these
Last Answer : .all of these
Description : For most bacteria, the optimum pH for growth lies between A- .6.5-7.5 B- B.3.5-4.5 C-.4.5-5.5 D-.5.5-6.5
Last Answer : 6.5-7.5
Description : Selective media facilitate growth of only one kind of organism.Saboraud medium is used to selectively isolate A- coliform bacteria B- gram positive bacteria C- .yeasts D- acid fast organisms
Last Answer : .yeasts
Description : The medium which allows the growth of more than one microorganisms of interest but with morphologically distinguishable colonies is known as A- selective medium B- enrichment medium C- differential medium D- none of these
Last Answer : differential medium
Description : When a substance is added to a liquid medium which inhibits the growth of unwanted bacteriaand favors the growth of wanted bacteria, it is known as A- differential medium B- enriched medium C- enrichment medium D-selective medium
Last Answer : enrichment medium
Description : Agar is used for solidifying culture media because A-it does not affect by the growth of bacteria B-it does not add to the nutritive properties of the medium C-the melting and solidifying points of agar solution are not the same D-all of the above
Last Answer : all of the above
Description : Which of the following chemotherapeutic agents may affect the growth of Campylobacterjejuni? A- Vacomycin B- Polymyxin C- Trimethoprim D- .None of these
Last Answer : .None of these