Description : .In functional allelopathy a). Toxic substances are released as such from the plants b). A precursor is released and is converted into active substances by some microorganisms c). No release of any toxic substance d). release of nitrogen from nodule of legume takes place
Last Answer : b). A precursor is released and is converted into active substances by some microorganisms
Description : What is the difference between the manner in which movement takes place in a sensitive plant and the movement in our legs ? -Biology-10
Last Answer : Movement in a sensitive (mimosa) plant Movement in legs of a human 1. The leaves of a sensitive plant like mimosa are sensitive to touch. 1. Leg is in control of nerve muscles. 2. It is not ... in a sensitive plant are nastic movement. 4. The movement in our leg is due to voluntary nervous system.
Description : (1) a homogeneous mixture of two or more substances Explanation: A homogeneous mixture of two or more substances uniformly dispersed throughout a single phase is called solution. In such a mixture, a ... the solvent including its phase, and the solvent is commonly the major fraction of the mixture.
Last Answer : Choose the incorrect statement pertaining to organic compounds - (1) They have low melting and boiling points (2) They do not dissolve in water (3) They are not easily combustible (4) They contain mainly carbon and hydrogen
Description : Downward movement of food synthesized in leaves takes place through
Last Answer : Ans. Phloem
Description : During Osmosis, movement of water takes place from
Last Answer : Ans. Lower to higher concentration of solution
Description : Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids ( ... Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary
Last Answer : (B) Molecular diffusion in solid is much faster than that in liquids
Description : Pick out the wrong statement. (A) Fluid movement under the influence of buoyant forces resulting from change in density takes place in case of natural convection (B) The ratio NNu /NRe . Npr is ... convection to that by conduction (D) The Colburn jH factor for heat transfer is given by Nst Npr
Last Answer : (D) The Colburn jH factor for heat transfer is given by Nst Npr
Last Answer : In conductors conduction of electricity takes place due to movement of electrons only.
Last Answer : The conduction of electricity, in semiconductors, takes place due to movement of electrons and holes.
Description : Assertion `:` Mucous glands occur throughout the alimentary canal Reason `:` Mucous substances facilitate movement of food through the alimenatary can
Last Answer : Assertion `:` Mucous glands occur throughout the alimentary canal Reason `:` Mucous substances facilitate ... . If both Assertion & Reason are false.
Description : Circulation is the movement of substances like nutrients and gases within blood vessels and cavities throughout the organism.
Last Answer : Do all animals have a circulatory system?
Description : Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly-cut coleoptile stumps. Of what ... . (c) It supports the hypothesis that IAA is auxin. (d) It demonstrated polar movement of auxins
Last Answer : (a) It made possible the isolation and exact identification of auxin.
Description : At what stage of cell cycle DNA synthesis takes place? -Biology
Last Answer : answer:
Description : Explain active transport of substances across cell membranes. -Biology
Description : How easy (or difficult) is it for an ASL viewer/reader to follow a conversation when it takes place on a tablet or cell phone?
Last Answer : I suppose it depends on the size of the screen and how well the person looking at the screen sees. I've seen some pretty big ... do that. https://clearcaptions.com/bing/?utm_source=bing&utm_medium=cpc&utm_campaign=brand&utm_term=clear%20caption%20telephone&msclkid=52a1cebdcbf11ea9c70aaf4f6bb5e5da
Description : (a) What are fuel cells? Explain the electrode reactions involved in the working of H2 – O2 fuel cell. (b) Represent the galvanic cell in which the reaction Zn (s) + Cu2+ (aq) → Zn2+ (aq) + Cu (s) takes place. -Chemistry
Last Answer : (a) Fuel cells : These cells are the devices which convert the energy produced during combustion of fuels like H2, CH4, etc. directly into electrical energy. The electrode reaction for H2 – O2 fuel cell : (b) The galvanic cell may be represented as Zn (s) | Zn2+ (1M) || Cu2+ (1M) | Cu (s)
Description : In absence of ribosome in cell which function does not takes place? -General Knowledge
Last Answer : The answer is 'Protein synthesis'
Description : In which type of cell divisions does crossing over of chromosomes takes place? -Do You Know?
Description : Peptide synthesis inside a cell takes place in
Last Answer : Peptide synthesis inside a cell takes place in A. Chloroplast B. Mitochondria C. Chromoplast D. Ribosomes
Description : What mutation can be passed to passed to offspring only if it takes place a cell?
Last Answer : Need answer
Description : Degradations of Hb takes place in (A) Mitochondrion (B) Erythrocytes (C) Cytosol of cell (D) R.E. cells
Last Answer : Answer : D
Description : Chain elongation of fatty acids occurring in mammalian liver takes place in which of the following subcellular fractions of the cell? (A) Nucleus (B) Ribosomes (C) Lysosomes (D) Microsomes
Description : Which chemical reaction takes place in a torch cell?
Last Answer : Chemical energy is converted into electrical energy.
Description : Glycolysis takes place in which part of the cell?
Last Answer : Cytoplasm
Description : .Protein synthesis in an animal cell, takes place (a) in the cytoplasm as well as endoplasmic reticulum (b) only on ribose attached to nucleon (c) only in the cytoplasm (d) in the nucleolus as well as in the cytoplasm.
Last Answer : (d) in the nucleolus as well as in the cytoplasm.
Description : Protein synthesis in an animal cell, takes place (a) in the cytoplasm as well as endoplasmic reticulum (b) only on ribose attached to nucleon (c) only in the cytoplasm (d) in the nucleolus as well as in the cytoplasm.
Description : Cell elongation in internodal regions of the green plants takes place due to (a) indole acetic acid (b) cytokinins (c) gibberellins (d) ethylene
Last Answer : (c) gibberellins
Description : Crossing over takes place between which chromatids and in which stage of the cell cycle ? (a) Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I. (b) Non- ... prophase I. (d) Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I.
Last Answer : (b) Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I.
Description : In a somatic cell cycle, DNA synthesis takes place in (a) G1 phase (b) prophase of mitosis (c) S-phase (d) G2 phase.
Last Answer : (c) S-phase
Description : In the somatic cell cycle (a) in G1 phase DNA content is double the amount of DNA present in the original cell (b) DNA replication takes place in S phase (c) a short interphase is followed by a long mitotic phase (d) G2 phase follows mitotic phase.
Last Answer : (b) DNA replication takes place in S phase
Description : During cell growth, DNA synthesis takes place on (a) S-phase (b) G1-phase (c) G2-phase (d) M phase.
Last Answer : (a) S-phase
Description : Identify the correct statement with regard to G1 phase (Gap 1) of interphase. (a) DNA synthesis or replication takes place. (b) Reorganisation of all cell components takes place. (c) Cell is metabolically active, grows but does not replicate its DNA. (d) Nuclear division takes place.
Last Answer : (c) Cell is metabolically active, grows but does not
Description : Peptide synthesis inside a cell takes place in (a) chloroplast (b) mitochondria (c) chromoplast (d) ribosomes
Last Answer : (d) ribosomes.
Description : In which type of cell divisions does crossing over of chromosomes takes place?
Last Answer : Meiosis
Description : absence of ribosome in cell which function does not takes place?
Last Answer : Protein synthesis
Description : $ Homogeniser and ultracentriguge are the devices for separating various cell organelles. ! The radioactive substances used in biological studies are
Last Answer : $ Homogeniser and ultracentriguge are the devices for separating various cell organelles. ! The radioactive ... . If both As and R are wrong.
Description : In the human body the circulator system transports and delivers substances. Within the cell which organelle performs a similar function?
Description : What are the two substances that must be transported to a cell?
Last Answer : Feel Free to Answer
Description : What cells main job is to sort and package proteins and other substances in a plant cell. chloroplasts chromosomes nucleus Golgi Submit?
Last Answer : organelle
Description : What cell main job is to control which substances enter and leave a plant cell.?
Last Answer : ?
Description : In animals that do not present the circulatory system the transport of substances occurs by cell to cell diffusion. The blood is a fundamental means of substance transport for larger animals ... there are tissues distant from each other and from the environment thus making diffusion impossible.
Last Answer : What are the two types of circulatory systems?
Description : Second messengers a. are substances that interact with first messengers inside cells b. are substances that bind to first messengers in the cell membrane c. are hormones secreted by cells ... the intracellular responses to many different hormonesand neurotransmitters e. are not formed in the brain
Last Answer : mediate the intracellular responses to many different hormonesand neurotransmitters
Description : Cell membranes a. consist almost entirely of protein molecules b. are impermeable to fat-soluble substances c. in some tissues permit the transport of glucose at a greater rate in the presence of ... to electrolytes but not to proteins e. have a stable composition throughout the life of the cell
Last Answer : in some tissues permit the transport of glucose at a greater rate in the presence of insulin
Description : Growth retardants are the substances which slow down : a. Cell division b. Cell elongation c. a & b d. None of the above
Last Answer : a & b
Description : Vacuole in a plant cell (a) lacks membrane and contains air (b) lacks membrane and contains water and excretory substances (c) is membrane-bound and contains storage proteins and lipids (d) is membrane-bound and contains water and excretory substances.
Last Answer : (d) is membrane-bound and contains water and excretory substances.
Description : Genes which are active all the time synthesizing substances needed by the cell are called a) Cellular luxury genes b) metabolic genes c) house keeping genes d) control genes
Last Answer : c) house keeping genes