• Biology,  Botony

    MCQ ON PLANT REPRODUCTION

    1. Formation of gametophyte directly from sporophyte without meiosis is (a) apospory (b) apogamy (c) parthenogenesis (d) amphimixis. Answer and Explanation: 1. (a): Formation of gametophyte directly from sporophyte without meiosis and spore formation is apospory. The gametophyte has a diploid number of chromosomes such gametophyte may form viable gametes which fuse to form tetraploid sporophyte. Apogamy is the development of sporophyte directly from gametophytic tissue without fusion of gametes. Amphimixis is normal sexual reproduction. Parthenogenesis is the development of an embryo from an egg without fertilization. 2. Parthenogenesis is (a) development of an embryo without fertilization (b) development of fruit without fertilization (c) development of fruit without hormones (d) development of…

  • Genetics,  Q & A

    Q & A ON MENDEL’S LAW

    1. Who was Gregor Mendel? Mendel is considered the father of genetics. He was a monk, biologist and botanist born in Austria in 1822 and who died in 1884. During the years 1853 to 1863, he cultivated pea plants in the gardens of his monastery to be used in his research. His experiments consisted of crossing pea plants with distinct characteristics (size, seed color, etc.), cataloging the results and interpreting them. The experiments led him to develop his laws, results published in 1886 with no scientific repercussions at that time. Only at the beginning of the 20th century, in 1902, 18 years after his death, were his achievements broadly recognized.…

  • Biochemistry,  Q & A

    Q & A ON CELL RESPIRATION

    1. How do cells obtain the energy they need to function? Cells obtain energy for their metabolic reactions from breaking down organic molecules with a high energy content. This energy is mostly stored as ATP molecules. The process of obtaining energy in order to produce ATP molecules is called cellular respiration. 2. What compound is phosphorylated for ATP formation? What is the resulting compound when ATP releases energy? ATP, or adenosine triphosphate, is formed after the binding of one phosphate molecule (phosphorylation) to one ADP (adenosine diphosphate) molecule. This is a process that stores energy in the produced ATP molecule. When ATP provides energy to the cellular metabolism, it releases…

  • Biology,  Human anatomy

    What is the function of Earwax in the Human Body?

    The earwax is very useful substance which keeps our ears healthy and is produced naturally in the ear. This wax is found not only in humans, but also in animals. It cleans, protects and lubricates the ears. Let us study through this article about earwax, its function etc. Important facts about Earwax 1. The scientific name of the earwax is cerumen. It is formed in the outer part of our ear canal where there are thousands of glands. It is sticky and shiny substance. It coats the ear to moisturize it and fight against infection.2. Earwax also prevents from dust, dirt, and insects from entering the ear.3. It also works like a natural antibiotic,…

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