Science & Technology II Exam Prep
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🎯 Exam Preparation Kit
Science & Technology II Exam Prep
English 19 leveled MCQs Free
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Sample questions with model answers
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9 marks Long answer
The diagram is representing a portion of cell division. Explain the depicted process in your own words.
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The process depicted is cytokinesis, where the cytoplasm divides after karyokinesis.
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9 marks Long answer
Where and in which forms the amino acids formed after digestion of food are used in the body?
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Amino acids are used in blood, skin, bones, cells, pancreas, pituitary gland, and muscles.
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9 marks Long answer
Explain the meaning of genetic disorders and give names of some disorders.
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Genetic disorders are due to abnormalities in chromosomes; examples include Down syndrome and Sickle cell anemia.
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5 marks Long answer
Explain the theory of evolution and mention the proof supporting it.
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The theory states that unicellular organisms evolved into complex forms; evidence includes morphological and fossil records.
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5 marks Long answer
(a) How many immature oocytes are present at the time of birth in the ovary of female foetus? (b) What is ovulation? (c) What is menopause?
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2-4 million immature oocytes are present; ovulation is the release of an oocyte; menopause is the cessation of reproductive function.
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4 marks Medium answer
Give reasons: Sometimes, higher plants and animals too perform anaerobic respiration.
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Due to oxygen deficiency, aerobic respiration is not possible, leading to anaerobic respiration.
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4 marks Medium answer
Duck billed platypus is a connecting link.
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It is a connecting link between reptiles and mammals.
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4 marks Medium answer
We feel exhausted after exercising.
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Lactic acid accumulation during anaerobic respiration leads to exhaustion.
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4 marks Medium answer
(i) What do you mean by diploid (2n) cell? (ii) What do you mean by haploid (n) cell?
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Diploid cells have two complete sets of chromosomes; haploid cells have one set.
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4 marks Medium answer
Write any two objections that were raised against Darwin’s Theory of Natural Selection.
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Natural selection is not the only factor; no explanation for useful and useless modifications.
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4 marks Medium answer
Whether the gametes are diploid or haploid? Why?
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Gametes are haploid due to meiosis reducing chromosome number.
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3 marks Medium answer
State 'True' or 'False', if 'False' correct it: All the organisms does not compete with each other in a life-threatening manner.
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False
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3 marks Medium answer
State 'True' or 'False', if 'False' correct it: The substances formed by specific chemical bond between fatty acids and alcohol are called as lipids.
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True
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1 marks Short answer
Process of ________was discovered by three scientists Gustav Embden, Otto Meyerhof, and Jacob Parnas.
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glycolysis
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1 marks Short answer
Human males have _________ numbers of chromosomes.
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44 + XY
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1 marks Short answer
Amino acids are obtained after digestion of
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proteins
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1 marks Short answer
Some plants and animals show some morphological characters by which they can be related to two different groups; hence they are called as ' ________'.
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connecting links
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1 marks Short answer
ATP is called as '________' of the cell.
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energy currency
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1 marks Short answer
Find the odd one out: Transcription, Translation, Translocation, Evolution
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Evolution (Others are used in protein synthesis)
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