Practise Branch of Science MCQs in Everyday Science. Attempt multiple-choice questions, check answers and revise related subtopics.
Study Branch of Science through multiple-choice questions in Everyday Science. This subtopic contains 2513 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.
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Answer: Osteichthyes
Explanation Ray-finned fishes are present in th e class Osteichthyes. This class is characterized by having a skeleton made of bone and includes the vast majority of fish species.
مندرجہ ذیل میں سے کون سی طحالب سرخ لہر کے لیے ذمہ دار ہے۔
Answer: Caphaleuros
Explanation The name “red tide” comes from the fact that the overgrowth of algae can cause the colour of the water to turn red. The red tides caused by the dinoflagellate Gonyaulax (unicellular algae) are serious because this organism produces powerful toxins (saxitoxin and gonyautoxins) that can kill aquatic organisms. ** Cephaleuros virescens which is Green algae Fucus is a genus of brown algae. ND 19-3-2023
Answer: Reactant A
Explanation For a reaction 2A+B→ product, rate law is − dt/ d[A] =k[A]] ND10-9-2023
Answer: 9.70
Explanation The optimal pH for most arginases is in the alkaline range, with values typically between 9.0 and 10.0, though variations exist depending on the source and specific arginase isoform. Arginase is an enzyme with an optimal pH around 9.7, where it functions best to convert arginine into urea and ornithine in the urea cycle.
Answer: Matrix
Explanation - The mitochondrial matrix contains enzymes, mitochondrial DNA, and ribosomes. - It is the site of the Krebs cycle (citric acid cycle), a key step in aerobic respiration
مندرجہ ذیل میں سے کون سا امینو ایسڈ ہے؟
Answer: aspartic acid
Explanation Aspartic acid ( symbol Asp or D; the ionic form is known as aspartate ), is an α-amino acid that is used in the biosynthesis of proteins. Like all other amino acids , it contains an amino group and a carboxylic acid.
آنکھوں کے ماہر کے طور پر جانا جاتا ڈاکٹر کیا ہے؟
Answer: Ophthalmologist
Explanation Ophthalmologist means a specialist in the branch of medicine concerned with the study and treatment of disorders and diseases of the eye . Ophthalmologist means ماہر امراض چشم ****
Answer: Negative
Explanation When a body moves against the force of friction on a horizontal plane, the work done by the body is negative. This is because work is defined as the dot product of force and displacement, And when moving against friction, the force of friction acts in the opposite direction to the displacement of the body, Resulting in an angle of 180 degrees between them.
کاسٹ کرنے کے بعد، خشک کرنے پر ایک عام سیمنٹ سیمنٹ کنکریٹ
Answer: Shrinks
Explanation After casting, ordinary cement concrete shrinks on drying. This shrinkage is a natural process where water evaporates from the concrete, causing it to reduce in volume. The shrinkage happens even without changes in mass or temperature, driven by the loss of capillary water from within the concrete.
Answer: Reduction of NADP⁺ to NADPH
Explanation The primary purpose of photosystem I (PSI) in the thylakoid membrane is the reduction of NADP⁺ to NADPH. This is a crucial step in the light-dependent reactions of photosynthesis, converting light energy into a chemical energy carrier that fuels the Calvin cycle.
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