Description : $ Enzymes are special types of proteins. ! Those substances which interfere with the action of enzymes are called inhibitors.
Last Answer : $ Enzymes are special types of proteins. ! Those substances which interfere with the action of enzymes are ... wrong D. If both As and R are wrong.
Description : $ Cellular totipotency means that single cell can give rise to a fully grown multicellular organisms ! Meristematic cells are also called "stem cells"
Last Answer : $ Cellular totipotency means that single cell can give rise to a fully grown multicellular organisms ! Meristematic ... D. If both As and R are wrong.
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 : Which one of the following cellular parts is correctly described? (a) Thylakoids - flattened membranous sacs forming the grana of chloroplasts (b) Centrioles - sites for active RNA synthesis (c) Ribosomes - ... cytoplasm are smaller (70S) (d) Lysosomes - optimally active at a pH of about 8.5
Last Answer : (a) Thylakoids - flattened membranous sacs forming the grana of chloroplasts
Description : All the following statements about fibronectin are true except (A) It is glycoprotein (B) It is a triple helix (C) It is present in extra cellular matrix (D) It binds with integrin receptors of cell
Last Answer : Answer : A
Description : Intracellular enzymes A-synthesize cellular material only B- .synthesize cellular material and perform catabolic reaction C- synthesize cellular material and perform anabolic reaction D- only provide energy to the cell
Last Answer : .synthesize cellular material and perform catabolic reaction
Description : Enzymes combine with a ___________at the___________ site to lower the activation energy. a. Substrate; Active b. Product; Noncompetitive c. Product; Active d. Coenzyme; Active
Last Answer : a. Substrate; Active
Description : $ Seive tubes in plants are formed of enucleated cells called seive members. ! All the activities of a seive cell are controlled by nucleated parenchy
Last Answer : $ Seive tubes in plants are formed of enucleated cells called seive members. ! All the activities of a seive ... wrong D. If both As and R are wrong.
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
Description : How does steroid hormone influence the cellular activities? (a) Using aquaporin channels ‘as second messenger’ (b) Changing the permeability of the cell membrane (c) Binding to DNA and forming a gene-hormone complex (d) Activating cyclic AMP located on the cell membrane
Last Answer : (c) Binding to DNA and forming a gene-hormone complex
Description : $ Inheritance of Kappa particles in Paramecium is type of extra-nuclear inheritance. ! The above process is also called Cytoplasmic inheritance.
Last Answer : $ Inheritance of Kappa particles in Paramecium is type of extra-nuclear inheritance. ! The above process is ... wrong D. If both As and R are wrong.
Description : There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s ... transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose
Last Answer : Answer: c, d The selectivity of the plasma membrane, although impressive, cannot account for the nonequilibrium composition of living cells. A cell can be maintained in a nonequilibrium state only by ... to drive the transport of a second species such as protons, calcium, amino acids, or glucose
Description : Which one of the following can truthfully be said of non-school, active agencies of social interaction? Options: A) The less education people have, the more they use established recreational ... has proved undesirable D) The community council should conduct activities, not just to co-ordinate them
Last Answer : B) The largest items of the expenditure for leisure time activities are for those of a passive nature
Description : $ those subtances which reduce the rate of transpiration are called transpirants. ! Imbibition causes Osmotic pressure.
Last Answer : $ those subtances which reduce the rate of transpiration are called transpirants. ! Imbibition causes Osmotic ... D. If both As and R are wrong.
Description : Biological functions of lipids include (A) Source of energy (B) Insulating material (C) Maintenance of cellular integrity (D) All of these
Last Answer : Answer : D
Description : Biological organisation starts with (a) cellular level (b) organismic level (c) atomic level (d) submicroscopic molecular level.
Last Answer : (b) organismic level
Description : $ The enzymes which joins short pieces DNA in the laggins strand is called ligase. ! Lagging strand and leading strand are formed due to replication f
Last Answer : $ The enzymes which joins short pieces DNA in the laggins strand is called ligase. ! Lagging strand and ... wrong D. If both As and R are wrong.
Description : In extra cellular compartment, the fluid present in ml/kg of body weight is about (A) 120 (B) 220 (C) 270 (D) 330
Last Answer : Answer : C
Description : The principal cation of extra cellular fluid: (A) K+ (B) Na+ (C) H+ (D) Ca2+
Last Answer : Answer : B
Description : $ DNA replication is semiconservative. ! Helicases are the enzymes which can break the hydrogen bonds between the nuclotides of DNA
Last Answer : $ DNA replication is semiconservative. ! Helicases are the enzymes which can break the hydrogen bonds between the ... D. If both As and R are wrong.
Description : $ Vacuoles help in compartmentisation inside a cell. ! A eukaryotic flagellum is formed of a protein called flagellin.
Last Answer : $ Vacuoles help in compartmentisation inside a cell. ! A eukaryotic flagellum is formed of a protein called ... wrong D. If both As and R are wrong.
Description : Why are the enzymes used in cellular respiration virtually in all species?
Last Answer : the same genetic code produces those enzymes.
Description : Select the alternative giving correct identification and function of the organelle A' in the diagram. (a) Mitochondria - Produce cellular energy in the form of ATP (b) Golgi body - ... packaging material (c) Lysosomes - Secrete hydrolytic enzymes (d) Endoplasmic reticulum - Synthesis of lipids
Last Answer : (a) Mitochondria - Produce cellular energy in the form of ATP
Description : What is the role of NAD+ in cellular respiration ? (1) It functions as an enzymes (2) It functions as an electron carrier (3) It is a nucleotide source for ATP synthesis (4) It is the final electron acceptor for anaerobic respiration
Last Answer : (2) It functions as an electron carrier
Description : $ the sum total of anabolic and catabolic activities is called metabolism ! Organisms with positive metabolism remain healthy.
Last Answer : $ the sum total of anabolic and catabolic activities is called metabolism ! Organisms with positive metabolism ... D. If both As and R are wrong.
Description : What is the role of enzymes in biological reactions?
Last Answer : A: Enzymes catalyze (speed up) chemical reactions in biological systems.
Description : What are some biological examples in which lysosomic enzymes play fundamental role ?
Last Answer : The remodelation of the osseous tissue, the function of acrosomes in sperm cells and the elimination of the tadpole tail are examples of biological processes in which lysosomic enzymes are key factors. The ... cell by its own mechanisms is called autolysis, a type of apoptosis (celll suicide).
Description : Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these (a) help in regulating metabolism (b) are exclusively synthesized in the body of a living organism as at present (c) are conjugated proteins (d) enhance oxidative metabolism.
Last Answer : (a) help in regulating metabolism
Description : Define Enzymes. Write biological source, chemical constituents and uses of Papaya.
Last Answer : Enzymes- Enzymes are the protein substances which act as catalysts in various biochemical reactions Papaya: Biological source: It consist of dried latex obtained by giving incision on unripen fruit of Carica ... skins and hides. 6. It is used in cheese manufacturing ,as a substitute of rennin.
Description : Which nucleic acid controls all cellular activities?
Last Answer : Ans. DNA
Description : Which cell organelle divides the intracellular space int two distinct compartments, i.e. luminal (inside) and extra luminal (cytoplasm) compartments ?
Last Answer : Which cell organelle divides the intracellular space int two distinct compartments, i.e. ... Mitochondria C. Endoplasmic reticulum D. Lysosome
Description : Short-lived immunity acquired from mother to fetus across placenta or through mother’s milk to the infant is categorised as (a) active immunity (b) passive immunity (c) cellular immunity (d) innate non-specific immunity.
Last Answer : (b) passive immunity
Description : If an enzyme‘s active site becomes deformed, inhibition was likely responsible. a. Metabolic b. Competitive c. Noncompetitive d. Cellular
Last Answer : c. Noncompetitive
Description : What are some examples of biological activities in which osmosis plays important role ?
Last Answer : Hemolysis (destruction of red blood cells) by entrance of water, the hydric regulation in plants and the entrance of water in the xylem of vascular plants are all examples of biological phenomena caused by ... of water in plant roots since root cells are hypertonic in comparison to the soil.
Description : Biological oxidation ponds remove organic matters present in the polluted water by (A) Using the activities of bacteria and other micro organisms (B) Aerobic oxidation (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : The major role of minor elements inside living organisms is to act as (a) co-factors of enzymes (b) building blocks of important amino acids (c) constituent of hormones (d) binder of cell structure.
Last Answer : (a) co-factors of enzymes
Description : If a school was stopping one of extra curricular activities due to lack of funds , which program would you choose sports or music?
Last Answer : Music is so important says the old band director.
Description : What is the energy source used in active transport through biological membranes ?
Last Answer : The energy necessary for active transport (against the concentration gradient of the transported substance) to occur comes from ATP molecules. The active transportation uses chemical energy from ATP.
Description : The type of bacteria which is active in trickling filter during biological treatment of sewage is the __________ bacteria. (A) Anaerobic (B) Saprophytic (C) Aerobic (D) Parasitic
Last Answer : (C) Aerobic
Description : Active transport of a substance across biological membranes has the following characteristics except: A. It is specific B. It is pH dependent C. It is saturable D. It requires metabolic energy
Last Answer : B. It is pH dependent
Description : Majority of drugs cross biological membranes primarily by: A. Passive diffusion B. Facilitated diffusion C. Active transport D. Pinocytosis
Last Answer : A. Passive diffusion
Last Answer : C. Is affected by extent of ionization of drug molecules
Description : Mahesh and Devi invested Rs.20979 and Rs. 22977 respectively in a business. Devi being an active partner will get Rs.750 every month extra for running the business. In 18 months if Devi received a total amount ... profit earned by both in one and half years is, A) 26888. B) 22500. C) 22587 D) 25874
Last Answer : Answer: C) Profit ratio of Mahesh: Devi =20979 :22977=:21:23 Devi is an active partner will get Rs,750/month For 18 months ,she receives Rs.13500 Balance amount of Devi =18250 -13500 =Rs 4750 ... =4750/23 *21 =Rs.4337 Total profit earned by both in one &half years =18250+4337 =Rs 22587
Description : Anu and Banu invested rupees Rs.26000 and Rs.22000 respectively. Anu being an active partner will get Rs.350 every month extra for running the business. In two years if Anu receives a total of Rs. 18000, then what is profit earned by Banu in two years. A) 2200 B) 3300 C) 4400 D) None
Last Answer : Answer: C) Profit ratio at Anu &Banu is , Anu: Banu=26000 :22000. Anu :Banu =13:11 Anu being an active e partner will get Rs 350 / every month. 2 years receive = Rs. 8400 Balance amount of Anu =18000 -8400 = 9600 Profit gained Banu in 2 years =9600/24 *11 = Rs.4400
Description : Unix command to change the case of first three lines of file “shortlist” from lower to upper (1) $ tr ‘[a-z]’ ‘[A-Z]’ shortlist | head-3 (2) $ head-3 shortlist | tr ‘[a-z]’ ‘[A-Z]’ (3) $ tr head-3 shortlist ‘[A-Z]’ ‘[a-z]’ (4) $ tr shortlist head-3 ‘[a-z]’ ‘[A-Z]’
Last Answer : (2) $ head-3 shortlist | tr ‘[a-z]’ ‘[A-Z]’
Description : $ Those lateral buds which are near the apical bud are called dormant buds. ! Dormancy of lateral buds is due to Apical dominance
Last Answer : $ Those lateral buds which are near the apical bud are called dormant buds. ! Dormancy of lateral buds is ... is wrong D. If both As and R are wrong.
Description : $ Those genes which are present on "Y" chromosomes of human beings are called holandric genes. ! Holandric genes are present both in men as well as wo
Last Answer : $ Those genes which are present on "Y" chromosomes of human beings are called holandric genes. ! Holandric ... wrong D. If both As and R are wrong.
Description : $ Those parts of the plants which help in vegetative reproduction are called propagules. ! Vegetative propagation is a type of Asexual reproduction
Last Answer : $ Those parts of the plants which help in vegetative reproduction are called propagules. ! Vegetative propagation ... D. If both As and R are wrong.