Biology Test 3 Please don't use any search browser to find the answer. Just do it yourself so you can measure your knowledge power. Best of Luck! Please! Enter Password 1 / 50 The chemicals produced by microorganisms, which are capable of destroying or inhibiting the growth of another organism: Anti-Toxins Both (A) and (B) Antibiotics Vaccines 2 / 50 Homologous structures: Have different structures and function None of the above Have same structures but different functions Have same functions but different structures 3 / 50 Super blue green algae is cyanobacteria which: None of the above Cause disease in man. Pollute water has nutritional value 4 / 50 Fatal heart attacks in a young is also done in cancer patients High level of blood cholesterol a condition in which liver cells lack receptor for removing cholesterol Kills the cancer cells 5 / 50 What is the role of progesterone hormone in women? Development of the uterine lining Follicle development Spermatogenesis Female secondary sex characteristics 6 / 50 Super blue green algae is cyanobacteria which: Cause disease in man. None of the above Pollute water has nutritional value 7 / 50 Which one doesn't belong to microtubules? Flagella Chloroplast Centrioles Cilia 8 / 50 Which of the following traits is not sex-linked recessive? Haemophilia Hypophosphatemic ricket tfm syndrome Colour blindness 9 / 50 AUTOSOMES ____in male and female Same Differnent None 10 / 50 During emergencies, the “fight-or-flight” response: is the result of aldosterone causing faster blood flow is caused by hormone secretions in the adrenal medulla Decrease the heartrate is stimulated by cortisol 11 / 50 Grassland in tropic climates have woody trees and are called Velt Pampas Prairies Savanna 12 / 50 Colorado Tick fever is caused by: Double stranded RNA virus Single stranded DNA virus Double stranded DNA virus Single stranded RNA virus 13 / 50 The water bloom is a: Water with bad smell. Water with a layer of organisms Polluted water Water cannot be drunk 14 / 50 ------have a limited number of organelles? Prokaryotes None of the above organ system Eukaryotes 15 / 50 Planning to reduce plant diseases by applying different strategic methods is termed as: Integrated disease management Hydroponics Chemical control Crop rotation 16 / 50 If the thyroid gland is removed so………. None Death Cause Our body stop producing the thyroid hormone 17 / 50 In which phase does the growth of bacteria take place? Stationary phase Death phase Lag phase Log phase 18 / 50 Sperms are produced in …….. Seminiferous tubules Liver None Abdomen 19 / 50 The total amount of energy that is converted to organic compounds in a given area per unit of time is called the: Gross primary productivity Transpiration Biomass Net primary productivity 20 / 50 The matching, identical but often have slight differences, genes are……. GENES CHROMOSOMES DNA 21 / 50 Ammonia is the waste product of____ . MARINE ANIMALS FISHES All 22 / 50 The chemicals produced by microorganisms, which are capable of destroying or inhibiting the growth of another organism: Antibiotics Vaccines Both (A) and (B) Anti-Toxins 23 / 50 De-duve (1949): Nerve cells Differentially permeable Lysosomes Golgi apparatus 24 / 50 Conduction of impulse: Translocation of food Nerve cells E.R. Differentially permeable 25 / 50 The body’s normal metabolic rate is regulated by: Epinephrine Prolactin Metaboloxin Thyroid hormones 26 / 50 Hepatitis A is caused by: Un-enveloped RNA virus Un-enveloped DNA virus Enveloped DNA virus Enveloped RNA virus 27 / 50 What is the mixed gland of the human body? Thyroid Liver Pituitary Pancreas 28 / 50 Which of the following is not aging? Dryness of skin Loss of hair pigment Increase of body weight Increase of number of cells 29 / 50 Albumin is the most important protein in blood serum. It is produced by Lungs Liver Heart Endocrine glands 30 / 50 ATP is an example of: Polynucleotide Mononucleotide Dinucleotide None of these 31 / 50 The reasoning from a specific set of observations to reach a general conclusion is called: Inductive reasoning Both (A) and (B) Deductive reasoning None of the above 32 / 50 The largest desert in the world is: Thal Sahara Thar Gobi 33 / 50 Brine is used for industrial production of NaOH HCL KCL NHO 34 / 50 Chemotherapy: Kills the cancer cells High level of blood cholesterol a condition in which liver cells lack receptor for removing cholesterol is also done in cancer patients 35 / 50 Forming face: Golgi Apparatus Lysosomes Nerve cells Translocation of food 36 / 50 The process of making a polypeptide sequence from the genetic code of mRNA molecule associated with a ribosome is termed as: Translation Transcription Transduction Transformation 37 / 50 plastids are ….. LEUCOPLAST CHLOROPLAST All CHROMOPLAST 38 / 50 Which of the biomes has been increased in area by human activities? Grassland Coniferous Desert Savanna 39 / 50 Method of research in which a biological problem is identified, relevant data is gathered, a hypothesis is formulated from these data, and the hypothesis is experimentally tested is called: All choices are correct Scientific theory Biological method Scientific law 40 / 50 Non-protein part of the enzyme is……… Apoenzyme Holoenzyme COFACTOR None 41 / 50 The four interconnected rings of steroid molecule have: 16 carbons 12 carbons 15 carbons 17 carbons 42 / 50 The thick walled enlarged reproductive cells are called: Hormogonia Akinete Heterocyst Trichome 43 / 50 Treatment of disease by x-rays or other ionizing radiation is: Radiotherapy All Chemotherapy Gene therapy 44 / 50 Plasma membrane: Differentially permeable Nerve cells Golgi apparatus Lysosomes 45 / 50 Pachytene is a Second stage of prophase in meiosis First stage of prophase in meiosis Third stage of prophase in meiosis Fourth stage of prophase in meiosis 46 / 50 Red wood trees measure over: 200 meters in height 400 feet in height 300 feet in height All choices are incorrect 47 / 50 Phloem cell: Nerve cells Golgi Apparatus Translocation of food Lysosomes 48 / 50 How many bones are present in human ears? 3 6 9 8 49 / 50 Identical chromosomes in males is: 23 22 26 56 50 / 50 NAD is an example of: Dinucleotide Coenzyme (A)Mononucleotide Both (B) and (C) Your score is 0% Restart quiz
