MTTC Biology

MTTC Biology Denitrification ANSWER- process of reduction of nitrate to molecular nitrogen by microbial action Carotenoids ANSWER- photosynthetic plant pigments that reflect yellow red light. They absorb blue-green and violet Pseodomonas sp ANSWER- a denitrifying bacteria Nitrosomonas sp ANSWER- nitrifying bacteria nitrobacter sp ANSWER- nitrifying bacteria Rhizobium sp ANSWER- nitrogen fixing bacteria FSH hormone ANSWER- Stimulates spermatogenesis in males and stimulates the growth of ovarian follicles in females. It is secreted by the anterior pituitary gland Anterior pituitary gland ANSWER- Secretes FSH, luteinising hormone, prolactin, thyroid stimulating hormone, adrenocorticotrophic hormone and GH Humification ANSWER- during decomposition in soil, the accumulation of dark colored amorphous substance called humus that serves as a reservoir of nutrients. It resists microbial action and so decomposition takes place slowly. Further degradation leads to mineralization Crossing over ANSWER- occurs during meiosis, and is a process of exchange of genetic material from one chromosome to another when they are paired Transduction ANSWER- the process of transfer of DNA from one bacterium to another by bacteriophages Lymphatic system ANSWER- Helps balance the body's fluid level and is associated with the immune system to act against infection. It contains the thymus, bone marrow, spleen, lymph nodes, and lymph. B-lymphocytes are accumulated and matured in the spleen Independent Variable ANSWER- It is a variable that stands alone and isn't changed by the other variables you are trying to measure. (Independent variable) causes a change in (Dependent Variable) and it isn't possible that (Dependent Variable) could cause a change in (Independent Variable). Dependent variable ANSWER- It is something that depends on other factors. Usually when you are looking for a relationship between two things you are trying to find out