d. : 10h (Special Practice Exam No. 1) (2) Sub: Science and Tech ) 2A) Give scientific reasons. (Any Two) 1) Vertebrates have been slowly originated from invertebrates. 2) Importance of outdoor games is unparalleled. 3) Microbial enzymes are used instead of chemical catalysts in chemical industry. B) Solve the following subquestions. (Any Three) 1) Distinguish between - Transcrintion
Answers
Answer:
2A)1)The Carbon dating technique used to assess the age of fossils indicated that invertebrates were present on the earth much before the vertebrates. ... It was also observed that vertebrates are more complexed than invertebrates. Therefore, it can be said that vertebrates have slowly originated from invertebrates.
2)Microbial catalysts are also known as bio-catalysts. Microbial catalysts are preferred over chemical catalysts for various reasons like: • Lesser byproducts are formed in case of microbial enzymes which means the cost of purification is minimised.
∙ Microbial enzymes can function at low temperatures, pH and pressure, thus saving the energy.
∙ Enzymes which are used in these processes can be reused as they do not decompose during these processes.
∙ Use of enzymes also reduces the amount of environmental pollution.
B)1)-this answer is in the pic that I've attached
