1. Which of the following is a mixture of ingredients used to fertilize and improve the soil?a. Phosphatic fertilizersb. Myceliumc. Compostd. Alfa-alfaAnswer: c. Compost 2. Which of the following earthworm specie is not recommended for vermicomposting?a. Eudrilus eugeniaeb. Eisenia fetidac. Perionyx excavatesd. Pheretima PosthumaAnswer: d. Pheretima Posthuma 3. Which of the following worms are used … Read more
1. What does AIDS stands for?a. Acute immune deficiency syndromeb. Human immunodeficiency syndromec. Acquired immune deficiency systemd. Acquired immune declined systemAnswer: b. Human immunodeficiency syndrome 2. The AIDS epidemic officially began on 5 June 1981 in:a. Russiab. UKc. USAd. FranceAnswer: c. USA 3. Who firstly discovered the causative agent of AIDS in 1983?a. Oxford institute … Read more
1. The depletion of the ozone layer is caused by:a. Carbon dioxideb. Nitrous oxidec. Methaned. ChlorofluorocarbonsAnswer: d. Chlorofluorocarbons 2. Montreal protocol is related to:a. Global warmingb. Ozone depletionc. Climatic changesd. Biodiversity hotspotAnswer: b. Ozone depletion 3. Who discovered the ozone layer? Hint: discovered in 1913a. Henry and Charlesb. Carl and Charlesc. G. M.B Dobsond. Carl … Read more
1. The biology that deals with the structure and function of the macromolecules e.g. proteins and nucleic acids is known as:a. Microbiologyb. Molecular biologyc. Biotechnologyd. Environmental biologyAnswer: b. Molecular biology 2. How many bio-elements account for 99% of the total mass?a. Sevenb. Threec. Sixd. TenAnswer: c. Six 3. At which position on the ribose ring … Read more
1. The largest reservoir of nitrogen is…?a. Soilb. Waterc. Aird. RocksAnswer: c. Air 2. How much of the atmosphere is made up of nitrogen?a. 21%b. 78%c. 80%d. 50%Answer: b. 78% 3. In living organisms, nitrogen is present in form of:a. Elementb. Freec. Combinedd. Amino acidsAnswer: d. Amino acids 4. A completely free-living organism which takes … Read more
1. In photosynthesis; the light-independent reactions take place at:a. Stromal matrixb. Thylakoid lumenc. Photosystem Id. Photosystem IIAnswer: a. Stromal matrix 2. The aldehyde which is formed during the photosynthesis of plants is:a. Methanalb. Acetaldehydec. Propanald. EthanalAnswer: a. Methanal 3. About 80% of the photosynthesis that takes place on this earth is carried out by:a. Treesb. … Read more
1. An individual skeletal muscle may be made up of hundreds of:a. Microfilamentb. Sarcolemmac. Myofibrilsd. Muscles fiberAnswer: d. Muscles fiber 2. A sarcomere is the region of a myofibril between two successive:a. M-linesb. L-bondsc. Z-linesd. T-tubulesAnswer: c. Z-lines 3. Calcium ion released during a muscle fiber contraction attached with:a. Myosinb. Tropomyosinc. ActInd. TroponinAnswer: d. Troponin … Read more
1. At what stage is the gender of the baby determined during pregnancy?a. Conceptionb. First Trimesterc. Second Trimesterd. Third TrimesterAnswer: C. Second TrimesterExplanation: During the second trimester of pregnancy, typically between weeks 16 to 20, the gender of the baby can be determined through a prenatal ultrasound or other medical procedures. 2. Which of the … Read more
1. Which of the following features is shared by all living organisms?a. Cell wallb. DNA or RNAc. Meiosisd. Membrane bound organellesAnswer: b. DNA or RNA 2. Which of the following is utilized by all living organisms?a. CO2b. Oxygenc. ADP as cellular energyd. A triplet genetic code to produce proteinsAnswer: d. A triplet genetic code to … Read more
1. The endoskeleton is primarily made up of how many types of tissues?a. Oneb. Twoc. Threed. FourAnswer: b. Two 2. Which of the following cartilage is present on the end of long bones?a. Hyaline cartilageb. Fibrous cartilagec. Calcified cartilaged. Elastic cartilageAnswer: a. Hyaline cartilage 3. In which of these moulting of exoskeleton occurs from time … Read more