Description : Nucleic acids can be detected by means of their absorption maxima near 260 nm. Their absorption in this range is due to (A) Proteins (B) Purines and pyrimidines (C) Ribose (D) Deoxyribose
Last Answer : Answer : B
Description : `P_(680)` is calld PS II ! C-4 plants hav photorespiration.
Last Answer : `P_(680)` is calld PS II ! C-4 plants hav photorespiration. A. If both As and R are correct and R is ... , R is wrong D. If both As and R are wrong.
Description : (3) checking the penetration of ultra-violet rays to the earth Explanation: Ozone in the ozone layer filters out sunlight wavelengths from about 200 nm UV rays to 315 nm, with ozone peak absorption at about 250 nm. This ... the lower UV-C (200 nm-280 nm) and the entire UV-B band (280 nm-315 nm).
Last Answer : The advantage of detergents over soaps is – (1) Detergents are soluble in water (2) Detergents could not give much lather (3) Detergents give lather even with hard water (4) Soaps give lather with only soft water
Description : The wavelength of light absorbed by Pr form of phytochrome is (a) 680 nm (b) 720 nm (c) 620 nm (d) 640 nm
Last Answer : (a) 680 nm
Description : Which of the following pairs are correctly matched? (1) 700 nm—Photosystem-I (2) 650 nm—Photosystem-II (3) 690 nm—Photosystem-II (4) 620 nm—Phycocyanin
Last Answer : Ans. ((c))
Description : The danger signals are red while the eye is more sensitive to yellow because – (1) absorption in red is less than yellow and hence red is visible from a distance (2) scattering in yellow light is less than red (3) the wavelength of red light is more than yellow light (4) none of the above reasons
Last Answer : (3) the wavelength of red light is more than yellow light
Description : The energy of a 700- nm photo is :-
Last Answer : The energy of a 700- nm photo is :- A. 1.77 eV B. 2.47 eV C. 700 eV D. 3.57 eV
Description : The wavelength of visible light extends from a. 0.8 to 1.0 nm b. 400 to 750 nm c. 200 to 660 nm d. 700 to 1200 nm
Last Answer : b. 400 to 750 nm
Description : Which laser emits light in the visible range 400 to 700 nm? a. Argon-ion b. Nitrogen c. Carbon-dioxide d. Neodymium-YAG
Last Answer : a. Argon-ion
Description : The photosynthetically active (PAR) falls in the range of (A) 400 – 700 nm (B) 100- 400 nm (C) 700- 1000 nm (D) None of the above
Last Answer : (A) 400 – 700 nm
Description : The wavelength of a visible extends from ∙ A. 0.8 to 1.6 um ∙ B. 400 to 750 nm ∙ C. 200 to 660 nm ∙ D. 700 to 1200 nm
Last Answer : B. 400 to 750 nm
Description : Infrared light has a wavelength that is ∙ A. less than 400 nm ∙ B. more than 700 nm ∙ C. less than 700 nm ∙ D. a little over 400 nm
Last Answer : B. more than 700 nm
Description : Infrared range for fiber optics ∙ a. 400 – 700 nm ∙ b. 700 – 1200 nm ∙ c. 300 – 2000 nm ∙ d. 400 – 7000 nm
Last Answer : b. 700 – 1200 nm
Description : The wavelength of visible light extends from ∙ a. 0.8 to 1.0 nm ∙ b. 400 to 750 nm ∙ c. 200 to 660 nm ∙ d. 700 to 1200 nm
Description : Which laser emits light in the visible range 400 to 700 nm? ∙ a. Argon-ion ∙ b. Nitrogen ∙ c. Carbon-dioxide ∙ d. Neodymium-YAG
Description : Chlorophyll formation takes place within a light wavelength of _________: a. 150-200 b. 200-300 c. 300-675 d. 700-900
Last Answer : 300-675
Description : For a 2nd order feedback control system, the peak resonance magnitude should be Mp ≤ 1.15. Hence the damping ratio (δ) is (a) 0.1 (d) 0.5 (c) 0.707 (d) 1
Last Answer : For a 2nd order feedback control system, the peak resonance magnitude should be Mp ≤ 1.15. Hence the damping ratio (δ) is 0.5
Description : The following are true about spectral sensitivity of the retina: a. in scotopic conditions, the peak sensitivity of the eye is near 500 nm b. under photopic conditions the peak sensitivity is near 555 nm c ... light the retina has a peak sensitivity near 440 nm to a 25-Hz stimulus d. all above
Last Answer : all above
Description : True statement about dark adaptation include: a. there is a shift in peak spectral sensitivity from 555 nm to 505 nm with dark adaptation b. rods are more sensitive than cone during dark adaptation c. biphasic changes only occur in retina which processes both rods and cones d. all above
Description : Carbon dioxide joins the photosynthetic pathway in (a) PS I (b) PS II (c) light reaction (d) dark reaction
Last Answer : d) dark reaction.
Description : During light reaction of photosynthesis, which of the following phenomenon is observed during cyclic phosphorylation as well as non-cyclic phosphorylation? (a) Release of O2 (b) Formation of ATP (c) Formation of NADPH (d) Involvement of PS I and PS II pigment systems
Last Answer : (b) Formation of ATP
Description : In light reaction, plastoquinone facilitates the transfer of electrons from (a) PS-II to Cytb6f complex (b) Cytb6f complex to PS-I (c) PS-I to NADP+ (d) PS-I to ATP synthase.
Last Answer : (a) PS-II to Cytb6f complex
Description : Ferredoxin is a constituent of (a) PS I (b) PS II (c) Hill reaction (d) P680.
Last Answer : (a) PS I
Description : Attorneys can now submit documents electronically in many courts; the standard format in federal courts is ____. a. Microsoft Word (DOC) b. Portable Document Format (PDF) c. Encapsulated Postscript (EPS) d. Postscript (PS)
Last Answer : b. Portable Document Format (PDF)
Description : A consecutive reaction, as shown in the bellow figure, is characterised by. (A) Maxima in the concentration of A (B) Maxima in the concentration of B (C) Maxima in the concentration of C (D) High exothermicity
Last Answer : (B) Maxima in the concentration of B
Description : MN and PS are two equal chords of a circle drawn on either side of centre O of the circle . Both the chords are produced to meet at point A. If the ra
Last Answer : MN and PS are two equal chords of a circle drawn on either side of centre O of the circle . Both the chords ... 12 `cm and OA `=17` cm , then find NA.
Description : PS is the chord of the circle with centre O. A perpendicular is drawn from centre O of the circle to chord PS at M. If `bar(PS) =30 cm` and `bar(OM) =
Last Answer : PS is the chord of the circle with centre O. A perpendicular is drawn from centre O of the circle to ... =8 cm`, then find the radius of the circle.
Description : Nucleic acid show strong absorption at one of the wavelength: (A) 280 nm (B) 220 nm (C) 360 nm (D) 260 nm
Last Answer : Answer : D
Description : The most of the ultraviolet absorption of proteins above 240 nm is due to their content of (A) Tryptophan (B) Aspartate (C) Glutamate (D) Alanine
Last Answer : Answer : A
Description : In organic molecules, fluorescence seldom results from absorption of UV radiation of wavelengths lower than (A) 350 nm (B) 200 nm (C) 300 nm (D) 250 nm
Last Answer : (A) 350 nm
Description : Water stress causes stomata to (A)____ hence reducing the (B)_____ availability.
Last Answer : Water stress causes stomata to (A)____ hence reducing the (B)_____ availability.
Description : Prove that the length of the tangents drawn from an external point to a circle are equal, hence show that the centre lies on the bisector of the angle between the two tangents? -SST 10th
Last Answer : Given: PT and TQ are two tangent drawn from an external point T to the circle C (O, r). To prove: 1. PT = TQ 2. ∠OTP = ∠OTQ Construction: Join OT. Proof: We know that, a tangent to ... point to a circle are equal. ∠OTP = ∠OTQ, ∴ Centre lies on the bisector of the angle between the two tangents.
Description : The first step for initiation of photosynthesis will be (a) photolysis of water (b) excitement of chlorophyll molecules due to absorption of light (c) ATP formation (d) glucose formation.
Last Answer : (b) excitement of chlorophyll molecules due to absorption of light
Description : A daily intake of ____ calories has been established as the daily reference value (DRV). a. 1,700 c. 1,900 b. 1,800 d. 2,000
Last Answer : d. 2,000
Description : The National Marine Fisheries Service estimates that approximately ____ plants process fish and shellfish in the United States. a. 2,000 c. 2,500 b. 1,700 d. 1,500
Last Answer : d. 1,500
Description : In major production areas, dairies of ____ cows or more are not uncommon. a. 1,000 c. 2,000 b. 500 d. 700
Last Answer : a. 1,000
Description : Which element is located at the centre of the porphyrin ring in chlorophyll? (a) Calcium (b) Magnesium (c) Potassium (d) Manganese
Last Answer : (b) Magnesium
Description : Which of the following wavelengths where absorption of electromagnetic waves becomes peak due to vibrational resonances in the water vapor molecule? A. 1.35 cm and 1.7 mm B. 1.5 mm and 5 mm C. 1.35 dm and 1.7 cm D. 1.5 cm and 5mm
Last Answer : A. 1.35 cm and 1.7 mm
Description : Which of the following wavelengths where absorption of electromagnetic waves becomes peak due to vibrational resonances in the water vapor molecule? A. 1.35 cm and 1.7 mm B. 1.5 mm and 5mm C. 1.35 dm and 1.7cm D. 1.5 cm and 5 mm
Description : The preferred route of administration of medication in the most acute care situations is which of the following routes? a) Intravenous The IV route is the preferred ... ) Intramuscular Intramuscular administration of medication is absorbed more slowly than intravenously administered medication.
Last Answer : a) Intravenous The IV route is the preferred parenteral route in most acute care situations because it is much more comfortable for the patient, and peak serum levels and pain relief occur more rapidly and reliably.
Description : Assertion :In `C_(4)` plants, the chloroplasts of bundle sheath cells are granal. Reason: PS II is mostly found in the appressed part of granum.
Last Answer : Assertion :In `C_(4)` plants, the chloroplasts of bundle sheath cells are granal. Reason: PS II ... false. D. If both Assertion and Reason are false.
Description : Primary electron acceptor of PS-II is
Last Answer : Primary electron acceptor of PS-II is A. Pheophytin B. Ferredoxin C. PQ D. PC
Description : PS II is found in
Last Answer : PS II is found in A. Stacked part of granum B. Non-stacked part of granum C. Stroma thylakoid D. Stroma
Description : NADP+ is reduced to NADPH in (a) PS I (b) PS II (c) Calvin cycle (d) noncyclic photophosphorylation.
Last Answer : (d) noncyclic photophosphorylation.
Description : Which pigment system is inactivated in red drop? (a) PS-I and PS-II (b) PS-I (c) PS-II (d) None of these
Last Answer : (c) PS-II
Description : What is bigger 0.680 or 0.079?
Last Answer : 0.0680 is bigger
Description : What is 680÷20?
Last Answer : 34
Description : `P_(680)` is related with
Last Answer : `P_(680)` is related with A. Light B. Dark C. Both D. None
Description : What is 4.680 rounded to the nearest tenth?
Last Answer : 4.7