Description : Nitrogen oxidation (nitrification)refers to the A- conversion of ammonium ions into nitrates through the activities of certain bacteria B- changing of atmospheric nitrogen (N2) to nitrogen compounds C- sulfur is oxidized to the sulfate form through Thiobacillusbacteria D- none of the above
Last Answer : conversion of ammonium ions into nitrates through the activities of certain bacteria
Description : Intracellular organization in bacterial and archaeal species is centered a. Compartmentation of metabolism. b. Growth and reproduction. c. Sensing and responding to environment. d. All the above (A—C) are correct.
Last Answer : d. All the above (A—C) are correct.
Description : Photosynthetic bacteria have pigments in (a) chromoplasts (b) chromatophores (c) leucoplasts (d) chloroplasts.
Last Answer : (b) chromatophores
Description : When comparing bacterial and archaeal cell membranes, only bacterial cell membranes a. Have three layers of phospholipids. b. Have a phospholipid bilayer. c. Are fluid. d. Have ether linkages.
Last Answer : b. Have a phospholipid bilayer.
Description : The cell membrane of archaeal cells contains a. A monolayer. b. Sterols. c. Ester linkage d. All of the above (A—C are correct.)
Last Answer : a. A monolayer.
Description : Consider the following statements and select the correct answer from the codes given below: 1. Viruses are obligate parasites and cannot be cultured on a synthetic medium 2. The red snow phenomenon observed in some alpine and arctic regions is ... (a) 1, 2 and 4 (b) 2 and 4 (c) 2 and 3 (d) 1 and 3
Last Answer : Ans:(d)
Description : Bacteria, as a group, are responsible for A.nitrogen oxidation B.sulfur oxidation C.nitrogen fixation D.all of these
Last Answer : D.all of these
Description : Which of the following does not produce oxygen as a product of photosynthesis? A.Oak trees B.Purple sulfur bacteria C.Cyanobacteria D.Phytoplankton
Last Answer : B.Purple sulfur bacteria
Description : Which of the following does not produce oxygen as a product of photosynthesis? A- A.Oak trees B.Purple sulfur bacteria C.Cyanobacteria D.Phytoplankton
Last Answer : Purple sulfur bacteria
Description : All the following characteristics apply to fungi except: a. There may be 1.5 million species. b. They lack chlorophyll. c. They include molds and yeasts. d. They are prokaryotic microorganisms.
Last Answer : d. They are prokaryotic microorganisms.
Description : What are the photosynthetic pigments belonging to carotenoids? -Biology
Last Answer : answer:
Description : Photosynthetic pigments found in algae? -Biology
Description : List the main photosynthetic pigments. -Biology
Description : $ Process of separation of photosynthetic pigments is called chromatography ! Chromatophore have accessory photosynthetic pigments such as phycocyanin
Last Answer : $ Process of separation of photosynthetic pigments is called chromatography ! Chromatophore have accessory ... If both As and R are wrong.
Description : Habitat, Plant body, photosynthetic pigments, cell wall, stored food
Last Answer : Identify the given figure of a algae and explain the characteristics of its class with the ... body, photosynthetic pigments, cell wall, stored food
Description : Photosynthetic pigments found in the chloroplasts occur in (a) thylakoid membranes (b) plastoglobules (c) matrix (d) chloroplast envelope.
Last Answer : (a) thylakoid membranes
Description : Which of the following pigments acts as a reaction- centre during photosynthesis? (a) Carotene (b) Phytochrome (c) P700 (d) Cytochrome
Last Answer : (c) P700
Description : Is gas vacuole found in blue green photosynthetic bacteria a type of inclusion body ? -Biology
Description : The first photosynthetic oxygen liberating organisms to appear on earth were (1) Cyanobacteria (2) Bryophytes (3) Green algae (4) Bacteria
Last Answer : (1) Cyanobacteria Explanation: Cyanobacteria or blue green algae were the photosynthetic organisms that lived in the ancient ocean. It liberated the oxygen found in the iron oxide.
Description : Which one of the following statements about fungi is NOT true? a. Some fungi are dimorphic. b. Fungi have cell walls made of chitin. c. Fungi are photosynthetic organisms. d. Fungi consist of the yeasts and molds.
Last Answer : c. Fungi are photosynthetic organisms
Description : Chlorophyll termed as universal photosynthetic pigment is? -Biology
Description : Which one of the following is not a photosynthetic pigment? (1) Chlorophyll (2) Phycobilin (3) Carotenoid (4) Arthocyanin
Last Answer : (4) Arthocyanin Explanation: There are three basic classes of photosynthetic pigments: Chlorophylls (greenish pigments), Carotenoids (usually red, orange, or yellow pigments) and Phycobilins (water-soluble pigments found in the cytoplasm). Anthocyartins play no part in photosynthesis
Description : The pigment involved in photosynthetic activity is - (1) anthocyanin (2) fucxanthin (3) carotenoid (4) chlorophyll
Last Answer : (4) chlorophyll Explanation: Chlorophyll is an extremely important bio-molecule, critical in photosynthesis, which allows plants to absorb energy from light. Chlorophyll absorbs light most strongly in ... near-green portions of the spectrum, hence the green color of chlorophyll-containing tissues.
Description : Chlorophyll a occurs in (a) all photosynthetic autotrophs (b) in all higher plants (c) all oxygen liberating autotrophs (d) all plants except fungi
Last Answer : (c) all oxygen liberating autotrophs
Description : Which one of the following is not a photosynthetic pigment ? (1) Chlorophyll (2) Phycobilin (3) Carotenoid (4) Anthocyanin
Last Answer : Anthocyanin
Description : The pigment involved in photosynthetic activity is (1) anthocyanin (2) fucxanthin (3) carotenoid (4) chlorophyll
Last Answer : chlorophyll
Description : $ Chlorosis means destruction or the loss of chlorophyll pigments. Chlorosis cause geotropism
Last Answer : $ Chlorosis means destruction or the loss of chlorophyll pigments. Chlorosis cause geotropism A. If both As and ... D. If both As and R are wrong.
Description : $ Nostoc has chloropyll "a" and phycocyanin pigments. ! Chlorophyll "a" helps in oxygenic photosynthesis.
Last Answer : $ Nostoc has chloropyll "a" and phycocyanin pigments. ! Chlorophyll "a" helps in oxygenic photosynthesis. A. ... wrong D. If both As and R are wrong.
Description : Which of the following plant pigments absorbs in red and far-red region of light? (1) Carotenoide (2) Chlorophyll (3) Phytochrome (4) elyptochrome
Last Answer : (3) Phytochrome Explanation: Phytochrorne is a photoreceptor, a pigment that plants use to detect light. It is a protein with a bilin chromophore. It detects mainly red and far-red region of the visible spectrum and regulates germination of seeds.
Description : Pigments in fruits and vegetables which are white in color are known as: a. Carotenoids b. Anthocyanins c. Anthoxanthins d. Chlorophyll
Last Answer : c. Anthoxanthins
Description : Which of the following plant pigments absorbs in red and farred region of light? (1) Carotenoide (2) Chlorophyll (3) Phytochrome (4) Cryptochrome
Last Answer : Phytochrome
Description : A _____ is a mutualistic association between a fungus and a photosynthetic organism like a cyanobacterium or algae. a. Morel b. Lichen c. Rust d. Smut
Last Answer : b. Glomeromycota, sporangiospores
Description : Blood is red in colour due to the presence of - (1) Cytochrome (2) Chlorophyll (3) Hemocyanin (4) Haemoglobin
Last Answer : (4) Haemoglobin Explanation: The red color of blood comes from the hemoglobin that makes up the majority of the mass of the cell, which allows the blood cell to carry oxygen around the body. The ... hemoglobin makes up so much of the blood cell that its red color overpowers the color of the plasma.
Description : A molecule in plants comparable to haemoglobin in animals is – (1) Cytochrome (2) Cellulose (3) Chlorophyll (4) Carotene
Last Answer : (3) Chlorophyll Explanation: Hemoglobin is the, ironcontaining oxygen-transport met alloprotein in the red blood cells of all vertebrates. Similarly, Cytochromes are, in general, membrane-bound ... helm, groups and are primarily responsible for the generation of ATP via electron transport.
Description : Which pigment absorbs the red and far-red light? (a) Cytochrome (b) Phytochrome (c) Carotenoids (d) Chlorophyll
Last Answer : (b) Phytochrome
Description : The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is (a) iron-sulphur protein(b) ferredoxin (c) quinone (d) cytochrome.
Last Answer : (c) quinone
Description : Electrons from excited chlorophyll molecule of photosystem II are accepted first by (a) quinone (b) ferredoxin (c) cytochrome-b (d) cytochrome-f.
Last Answer : (a) quinone
Description : Mg is a component of (a) chlorophyll (b) cytochrome (c) haemoglobin (d) haemocyanin.
Last Answer : (a) chlorophyll
Description : Blood is red in colour due to the presence of __________ . (1) Cytochrome (2) Chlorophyll (3) Hemocyanin (4) Haemoglobin
Last Answer : Haemoglobin
Description : A molecule in plants comparable to haemoglobin in animals is (1) Cytochrome (2) Cellulose (3) Chlorophyll (4) Carotene
Last Answer : Chlorophyll
Description : How many atoms of aluminum sulfur and oxygen are in 3 molecules of aluminum sulfate?
Last Answer : 1 formula unit of aluminum sulfate has the formula Al2(SO4)3. Sothere are 2 atoms of aluminum, 3 atoms of sulfur and 12 atoms ofoxygen in 1 formula unit of aluminum sulfate. There are nomolecules of aluminum sulfate. They are called formula units.
Description : In one molecule of sodium sulfate how many percent of it is sulfur?
Last Answer : We refer to "molecules" of sodium sulfate as formula units. Theformula is Na2SO4. The molar mass is 142 g/mole. And sulfur (S) is32 out of the entire 142 g. So, percent sulfur is 32/142 (x100%) =22.5%
Description : The PCR/sequencing approach to rRNA is most likely to give information about A.the species to which the bacteria are most closely related B.morphology of the bacterium C.the type of energy metabolism the bacterium has D.whether the bacterium is motile
Last Answer : A.the species to which the bacteria are most closely related
Description : Most important species of vinegar bacteria causing sliminess is A-.Acetobacteraceti B- Saccharomyces carlsbergiensis C- Lactobacillus lactis D- None of the above
Last Answer : .Acetobacteraceti
Description : Most important species of vinegar bacteria causing sliminess is A- Acetobacteraceti B- Saccharomyces carlsbergiensis C- Lactobacillus lactis D- None of the above
Last Answer : Acetobacteraceti
Description : The species of bacteria, which possesses 250 genes for lipid biosynthesis is A- M. genitalium B- M. tuberculosis C- E. coli D-H. influenza
Last Answer : M. tuberculosis
Description : Mycoplasmas, rickettsiae, and chlamydiae are A- .types of fungi B- small bacteria C- species of protozoa D- forms of viruses
Last Answer : small bacteria
Description : Psychrophilic bacteria species grow well at 10 degrees C, while mesophilic bacteria species grow well at _____ degrees C. a. 37 b. 50 c. 75 d. 98
Last Answer : a. 37