Description : The most suitable pore size for bacterial filtration in a membrane filter is ------- A 0.22 mm B 0.45 nm C 0.22 µm D 30 µm
Last Answer : C 0.22 µm
Description : What is the wavelength of red light emitted by a helium-neon laser? w) 122 nanometers x) 633 nanometers y) 2.43 picometers z) 1.37 micrometers
Last Answer : ANSWER: X -- 633 NANOMETERS (actually 632.8 nm)
Description : At what particular wavelength is solar flux measured? A. 10.7 mm band B. 10.7 m band C. 10.7 cm band D. 10.7 nm band
Last Answer : C. 10.7 cm band
Description : How many millimeters (mm) are equivalent to 2.5 cm?
Last Answer : Feel Free to Answer
Description : When are there more millimeters than centimeters? -Riddles
Last Answer : Always. There are 10 millimeters in 1 centimeter.
Description : How many centimeters is 522 millimeters?
Last Answer : Divide it by 10 and so it is 52.2 centimeters
Description : How many millimeters are 200 centimeters?
Last Answer : There are: 2000 mm equals 200 cm
Description : What measure is the best estimate for the average height of a middle school students 1.5 meters 1.5 centimeters 1.5 kilometers 1.5 millimeters?
Last Answer : 1.5 centimeters
Description : How many millimeters are in 900 centimeters?
Last Answer : 900 millimeters are in 900 centimeters
Description : The cross-sectional area of shipboard electrical cable is expressed in _____________. A. millimeters B. gage numbers C. centimeters D. circular mils
Last Answer : Answer: D
Description : X-rays can penetrate several ____ into a solid matter. a) millimeters b) meters c) centimeters d) kilometers
Last Answer : c) centimeters
Description : The tectonic plates on which India and the adjacen portion of Asia ride are colliding at a rate of: w) 1-10 millimeters per year x) 1-10 centimeters per year y) 1-10 meters per year z) 1-10 decimeters per year
Last Answer : ANSWER: X -- 1-10 CENTIMETERS PER YEAR
Description : The word length of a computer is measured in A) Bytes B) Millimeters C) Meters D) Bits
Last Answer : Answer : D
Description : The word length of a computer is measured in a. Bytes b. Millimeters c. Meters d. Bits
Last Answer : d. Bits
Description : What is the conversion of 7.03 cm to nanometers?
Last Answer : The centi- (c) prefix means 1/100 = 10⁻²The nano- (n) prefix means 1/1,000,000,000 = 10⁻⁹→ 1 nm = 10⁻⁹ m→ 1 cm = 10⁻² m→ 7.03 cm = 7.03 × 10⁻² m= 7.03 × 10⁻² × 1/10⁻⁹ × 10⁻⁹ m= 7.03 × 10⁻² × 10⁹ nm= 7.03 × 10⁹⁻² nm= 7.03 × 10⁷ nm= 70,3000,000 nm
Description : Which one of the following is NOT true of exotoxins? a. They are proteins. b. They are part of cell wall structure. c. They are released from live bacterial cells. d. They trigger antibody production.
Last Answer : d. They trigger antibody production.
Description : A healthy person can be diagnosed as having a infection with the multiplication of bacterial cells in the blood. a. Primary; bacteremia b. Primary; vermeil c. Primary; septicemia d. Secondary; parasitemia
Last Answer : c. Primary; septicemia
Description : The skin is a. Dominated By Gram-Negative Bacterial Cells. b. Free Of Bacterial Cells. c. Without A Microbiota. d. Dominated By Gram-Positive Bacterial Cells.
Last Answer : d. Dominated By Gram-Positive Bacterial Cells.
Description : Transformed bacterial cells may display enhanced drug resistances from the acquisition of _____. a. F factors b. M factors c. R factors d. S factors
Last Answer : c. R factors
Description : Which of the following is NOT a type of horizontal gene transfer between bacterial cells? a. transformation b. conjugation c. transduction d. translation
Last Answer : d. translation
Description : Competence refers to a bacterial cell's ability to a. Take Up DNA Fragments From The Environment. b. Be Infected By A Transducing Phage. c. Produce A Protein Product From An Engineered Gene. d. Undergo Conjugation With An F+ Cell.
Last Answer : a. Take Up DNA Fragments From The Environment.
Description : During the process of lysogeny _____. a. Phage DNA Integrates Into The Bacterial Chromosome. b. A Bacterium Acquires DNA From The External Environment. c. Competent Cells Receive Plasmids. d. New Phage Particles Are Assembled In The Host Bacterium.
Last Answer : a. Phage DNA Integrates Into The Bacterial Chromosome.
Description : Transposons are of particular significance because they a. often contain genes for antibiotic resistance. b. inhibit the effects of overlapping genes. c. come in pairs and often are associated with viruses. d. regulate gene transcription in bacterial cells.
Last Answer : a. often contain genes for antibiotic resistance.
Description : The promoter on an expression vector used to overproduce proteins in bacteria is A.a bacterial promoter B.expressed both in bacteria and mammalian cells C.not a regulated promoter D.the natural promoter of the gene being cloned
Last Answer : A.a bacterial promoter
Description : Bacterial cells susceptible to penicillium can be protected from destruction if the medium in which they are exposed is of A- high osmotic pressure B- low osmotic pressure C- moderate osmotic pressure D- high surface tension
Last Answer : high osmotic pressure
Description : The first step in infection of a host bacterial cells by a phage is A- adsorption B- absorption C- penetration D- replication
Last Answer : adsorption
Description : Treatment with bacterial endotoxins results blast formation in A- .B cells B- T cells C- Monocytes D- none of these
Last Answer : B cells
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 : Reproduction in bacterial cells occurs by the sequence of events known as _____. a. mitosis b. binary fission c. selfing d. budding
Last Answer : b. binary fission
Description : Which one of the following is NOT a structure or subcompartment found in bacterial cells? a. Micro compartments b. Volutin c. Ribosomes d. Mitochondria
Last Answer : d. Mitochondria
Description : Flagella are a. Made of carbohydrate and lipid. b. Found on all bacterial cells. c. Contain dextran fiber d. Important for chemo taxis.
Last Answer : d. Important for chemo taxis.
Description : Spherical bacterial cells in chains would be a referred to as a _______ arrangement. a. Vibrio b. Streptococcus c. Staphylococcus d. Tetrad
Last Answer : b. Streptococcus
Description : Which of the following do some bacterial cells use for motility? a. flagella b. cillia c. fimbriae d. pseudopodia
Last Answer : a. flagella
Description : Bacterial cells in biofilms can communicate with each other through a. osmosis b. quorum sensing c. diffusion d. enzymes
Last Answer : b. quorum sensing
Description : Before bacterial cells are simple stained and observed with the light microscope, they must be a. Smeared on a slide. b. Heat fixed. c. Air dried. d. All the above (A—C) are correct.
Last Answer : d. All the above (A—C) are correct.
Description : Which one of the following is NOT found in bacterial cells? a. Ribosomes b. DNA c. Mitochondria d. Cytoplasm
Last Answer : c. Mitochondria
Description : Who was the first person to see bacterial cells with the microscope? a. Pasteur b. Koch c. Leeuwenhoek d. Hooke
Last Answer : c. Leeuwenhoek
Description : What is the frequency of a blue light with a wave length of 469 nanometers?
Last Answer : Frequency is in cycles per unit timeWavelength is in length per cycleTo convert between the two you need the speed of the wave -which for light is the speed of light - which is given in ... Gigahertz (GHz) ...rounded to 3 significant digits since the wavelength is only givento 3 significant digits
Description : What is the length of on plant cell in micrometers?
Last Answer : What is the answer ?
Description : A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale reading is 5 mm and zero of circular
Last Answer : A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale ... (C) 0.053 cm (D) 0.529 cm
Description : Each of the equal sides of an isosceles triangle is 5 cm greater than the base. The perimeter is 46 Centimeters. What is the length of each side of the triangle?
Last Answer : a is one of the equal sides of the iscosceles triangle b is the base perimeter is a + a + b = 46cm a = b + 5cm subsitute a for b + 5cm in the perimeter equation b + 5cm + b + 5cm + b = 46cm ... = 12cm + 5cm a = 17cm So you have 2 sided with the length of 17cm and the base with the length of 12cm
Description : The cell mass can be measured optically by determining the amount of light scattered by a suspension of cells. The measurements are usually at a wavelength of A.300-400nm B.400-500nm C.500-600nm D.600-700nm
Last Answer : D.600-700nm
Description : A cantilever shaft has a diameter of 6 cm and the length is 40cm, it has a disc of mass 125 kg at its free end. The Young’s modulus for the shaft material is 250 GN/m2. Calculate the static deflection in nm. a) 0.001 b) 0.083c) 1.022 d) 0.065
Last Answer : a) 0.001
Description : Thermal radiation is an electromagnetic radiation with wavelengths in _____ range. A. 1 to 100 µm B. 0.1 to 100 µm C. 0.1 to 10 µm D. 10 to 100 µm
Last Answer : 0.1 to 100 µm
Description : Particulates (< 1 µm size) remaining suspended in air indefinitely and transported by wind currents are called (1) Mists (2) Fumes (3) Aerosols (4) Smoke
Last Answer : Aerosols
Description : How many millimeters is 3.2 cm?
Last Answer : It is 32 millimeters = 3.2 cm
Description : Cell size and cell number can be measured using A- hemocytometer B- coulter counter C- petroff-hausser counting chamber D- none of these
Last Answer : coulter counter