Description : A mitochondrion cannot produce new molecules. Which structure is most likely not functioning properly?
Last Answer : Hydrogen pump (APEX)
Description : The figure below shows the structure of a mitochondrion with its four parts labelled (A), (B), ( C ) and (D). Select the part correctly matched with i
Last Answer : The figure below shows the structure of a mitochondrion with its four parts labelled (A), ... - possess single circular DNA molecule and ribosomes
Description : The figure below shows the structure of a mitochondrion with its four parts labelled A, B, C and D. Select the part correctly matched with its function. D B A C (a) D (outer ... possesses single circular DNA molecule and ribosomes (d) A (matrix) - major site for respiratory chain enzyme
Last Answer : (b) B (inner membrane) – forms infoldings called cristae
Description : One of the following is not double membranous structure (A) Mitochondrion (B) Vacuole (C) Chloroplast (D) Nucleus
Last Answer : (B) Vacuole
Description : Digestion of protein-is necessary because (a)It not absorbed as such (b)Proteins are large molecules. (c) Proteins have complex structure. (d) Proteins are made of amino acids
Last Answer : (a)It not absorbed as such
Description : Could you find free living mitochondrion today why or why not?
Last Answer : Feel Free to Answer
Description : Out of the total enzymes present in a cell, a mitochondrion alone has (A) 4% (B) 70% (C) 95% (D) 50%
Last Answer : Answer : B
Description : Degradations of Hb takes place in (A) Mitochondrion (B) Erythrocytes (C) Cytosol of cell (D) R.E. cells
Last Answer : Answer : D
Description : The most active site of protein synthesis is the (A) Nucleus (B) Ribosome (C) Mitochondrion (D) Cell sap
Last Answer : B
Description : The organelle that make ATP is (a) Microbody (b) Nucleus (c) Mitochondrion (d) Ribosome
Last Answer : Ans:(c)
Description : Which one of the following Is also called the ‘powerplants’ of the cell? (1) Golgi body (2) Mitochondrion (3) Ribosome (4) Lysosome
Last Answer : (2) Mitochondrion Explanation: Mitochondria through the process of aerobic respiration, in eukaryotic cells produce ATP (energy currency of the cell). Hence, it is known as ‘powerplant of the cell'.
Description : Which of the following is called the powerhouse' of the cell? (1) Nucleus (2) Lysosome (3) Chromosome (4) Mitochondrion
Last Answer : (4) Mitochondrion Explanation: Mitochondria are sometimes described as "cellular power plants" because they generate most of the cell's supply of adenosine tri-phosphate (ATP), used as a source of ... cellular differentiation, cell death, as well as the control of the cell cycle and cell growth.
Description : Which one of the following is called the 'digestive bag' in the cell? (1) Golgi body (2) Mitochondrion (3) Ribosome (4) Lysosome
Last Answer : (4) Lysosome Explanation: Lysosomes are known as digestive bag because it digest every foreign material as well as worn out cell organelles. They contain powerful digestive enzymes which are capable of breaking down all organic materials.
Description : Which one of the following is also called the 'power plants' of the cell? (1) Golgi body (2) Mitochondrion (3) Ribosome (4) Lysosome
Last Answer : (2) Mitochondrion Explanation: In cell biology, a mitochondrion (plural mitochondria) is a membrane-enclosed organelle found in most eukaryotic cells. These organelles range from 0.5 to .0 micrometer (im) ... of the cell's supply of adenosine triphosphate (ATP), used as a source of chemical energy.
Description : .An outer covering membrane is absent over (a) nucleolus (b) lysosome (c) mitochondrion (d) plastid.
Last Answer : (a) nucleolus
Description : .Which one of the following organelles is located near the nucleus and contains a collection of flattened membrane bound cisternae? (a) Nucleolus (b) Mitochondrion (c) Centriole (d) Golgi apparatus
Last Answer : (d) Golgi apparatus
Description : The main area of various types of activities of a cell is (a) plasma membrane (b) mitochondrion (c) cytoplasm (d) nucleus.
Last Answer : (c) cytoplasm
Description : Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP? (a) Ribosome (b) Chloroplast (c) Mitochondrion (d) Lysosome
Last Answer : (c) Mitochondrion
Description : This group of protozoa has a single mitochondrion with a mass of DNA. a. Kinetoplastids b. Ciliates c. Apicomplexans d. Diplomonads
Last Answer : a. Kinetoplastids
Description : Which of the following structures is the smallest? A- Viriod B- Hydrogen atom C- .Bacterium D- Mitochondrion
Last Answer : Hydrogen atom
Description : Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP ? (1) Ribosome (2) Chloroplast (3) Mitochondrion (4) Lysosome
Last Answer : (3) Mitochondrion
Description : Which organelle releases oxygen (A) Mitochondrion (B) Chloroplast (C) Glyoxysome (D) Both A and B
Last Answer : (B) Chloroplast
Description : The length of each mitochondrion is about (A) 1.0 μm (B) 0.2 μm (C) 10 μm (D) 2.0 μm
Last Answer : (C) 10 μm
Description : Which of the following correctly matches an organelle with its function? (A) Mitochondrion . . . photosynthesis (B) Nucleus . . . cellular respiration (C) Ribosome . . . manufacture of lipids (D) Central vacuole . . . storage
Last Answer : (D) Central vacuole . . . storage
Description : In which organelle following reaction takes place 6 CO2 + 6 H2O + energy (from sunlight) ---------> C6H12O6 + 6 O2 (A) Mitochondrion (B) Peroxisome (C) Chloroplast (D) Glyoxysome
Last Answer : (C) Chloroplast
Description : Each of the following is a cell organelle except one. Which one of these is NOT a cell organelle? Is it a) mitochondrion b) lysosome c) cytoplasm d) endoplasmic reticulum
Last Answer : ANSWER: C -- CYTOPLASM
Description : Which one of the following is called the ‘digestive bag’ in the cell? (1) Golgi body (2) Mitochondrion (3) Ribosome (4) Lysosome
Last Answer : Lysosome
Description : Which of the following is called the powerhouse’ of the cell ? (1) Nucleus (2) Lysosome (3) Chromosome (4) Mitochondrion
Last Answer : Mitochondrion
Description : Which one of the following is also called the ‘power plants’ of the cell ? (1) Golgi body (2) Mitochondrion (3) Ribosome (4) Lysosome
Description : If you have the ability to take in water food molecules and other necessary materials you have what?
Last Answer : Need answer
Description : (3) Oxides of nitrogen and sulphur Explanation: Acid rain is caused by emissions of oxides of Sulfur and Nitrogen (Sulfur Dioxide and Nitrogen Oxide), which react with the water molecules in the ... The emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) result from fossil fuel combustion.
Last Answer : (3) live wire and the neutral wire Explanation: Three wires enter most homes from the power pole-two "hot" wires and a third "neutral" wire. Each hot wire provides 120- volt current for ... the main switch is put off because the electric circuit (the path where the electricity travels) gets opened.
Description : (2) oxides of nitrogen and sulphur Explanation: Acid rain is caused by emissions of sulfur dioxide and nitrogen oxides, which react with the water molecules in the atmosphere to produce acids.
Last Answer : Neuron is - (1) Fundamental unit of energy (2) Particle released in radioactive emission (3) Antiparbcle of neutron (4) Fundamental unit of nervous system
Description : Homolytic fission of covalent bond between carbon atoms will produce : (a) Two carbonium ions (b) Two molecules (c) Free radicals (d) Carbonium ion and carbanion
Last Answer : Free radicals
Description : The organophosphates produce irreversible inhibition of cholinesterase because: A. They bind to an allosteric site of the enzyme resulting in unfavourable conformation of esteratic site to bind ... degradation of enzyme molecules D. They are neither metabolized nor excreted from the body
Last Answer : B. Regeneration time of the phosphorylated enzyme is longer than the turnover time of the enzyme molecules
Description : In the first stage of photosynthesis, light energy is used to: a) move water molecules b) denature chlorophyll c) split water d) produce carbohydrates
Last Answer : ANSWER: C -- SPLIT WATER
Description : In a hydrogen ion pump the energy is used to join small molecules together to make larger ones which factor most likely has the greatest effect on the number of molecules mitochondria can produced?
Last Answer : the amount of energy the flowing H+ ions have
Description : A sample of pure amine molecules is found to possess no intermolecular Hbonding. This sample is most likely : (a) 1° amine (b) 2° amine (c) 3° amine (d) all of these
Last Answer : 3° amine
Description : A complex of platinum, ammonia and chloride produces four ions per molecules in the solution. The structure consistent with the observation is :
Last Answer : A complex of platinum, ammonia and chloride produces four ions per molecules in the solution. The structure consistent ... [Pt(NH_(3))_(4)Cl_(2)]Cl`
Description : Identify the correct sequence of increasing of `pi-` bonds in the structure of the following molecules `:` `(I)H_(2)S_(2)O_(6)" "(II)H_(2)S_(2)O_(3)"
Last Answer : Identify the correct sequence of increasing of `pi-` bonds in the structure of the following molecules `:` `(I)H_(2) ... I C. II, I, III D. I, III,II
Last Answer : Identify the correct sequence of increasing of `pi-` bonds in the structure of the following molecules `:` `(I)H_(2) ... i C. ii, I, iii D. I, iii, ii
Description : How does X-ray diffraction aid in the understanding of the structure of molecules?
Last Answer : X-ray diffraction is the investigative use of X-rays to discoverthe internal structure of a number of different things. The basicapproach is to set up a target material and direct a beam ... a broad field with diverging and complex investigativetechniques. Even so, the fundamentals remain the same.
Description : What is the Structure of a chemical or molecule determines that chemical or molecule's?
Description : The basic structure of cell membranes (a) Is a lipid bilayer that serves as a barrier to water soluble molecules (b) Differs ultra structurally for internal and external membranes ... dispersed within a protein bilayer (d) Is visualised as bilaminar structure with transmission electron microscopy
Last Answer : Ans:(a)
Description : Who do double bonds in rubber molecules influence there structure and reactivity.
Last Answer : Ans: Greater the number of double bound the rubber will be less reactive because of greater inter molecular forces of attraction among the monomers.
Description : Why is moist heat more versatile than dry heat? a. It More Easily Penetrates Materials. b. Water Molecules Conduct Heat Better Than Air c. It Denatures Proteins By Changing Their Structure And Chemical Bonds d. A-C Are Correct
Last Answer : d. A-C Are Correct
Description : Which of the following statement describes plasmids? A- Another name for a protoplast B- A complex membrane structure that covers the chromosome of bacteria Small, circular DNA molecules that can exist independently of chromosomes commonly C- found in bacteria D- None of the above
Last Answer : found in bacteria
Description : Using X-ray crystallography, this woman scientist determined the structures of large biochemical molecules, including penicillin in 1949 and vitamin B12 in 1956. In 1969 she determined the three ... X-ray techniques of the structures of important biochemical substances." Name this woman scientist.
Last Answer : ANSWER: (DOROTHY) CROWFOOT HODGKIN
Description : Which factorAn electronics company is trying to decide how many new computers it should produce for export to China. Which factor would most likely cause the company to produce a large number of computers?
Last Answer : A. New technology makes shipping to China cheaper than ever before. B. The Chinese government has recently raised taxes on all foreign products. C. Chinese workers have a low degree of computer education. D. Chinese consumers believe that computer prices will drop in the future.
Description : ABCD is a parallelogram.The circle through A,B and C intersect CD (produce if necessary) at E.Prove that AE = AD. -Maths 9th
Last Answer : Solution :- ∠ABC + ∠AEC = 1800 (Opposite angles of cyclic quadrilateral) .. . (i) ∠ADE + ∠ADC = 1800 (Linear pair) But ∠ADC = ∠ABC (Opposite angles of ||gm) ∴ ∠ADE + ∠ABC = 1800 .. (ii) ... ∠ABC + ∠AEC = ∠ADE + ∠ABC ⇒ ∠AEC = ∠ADE ⇒ AD = AE (sides opposite to equal angles)