Answer: A. scalp hairs grow constantly throughout life.
Explanation:
Hair is a squamous keratinized epithelium which is consist of multi-layered flat cells. Hair are made up of protein called "keratin".
The statement "scalp hairs grow constantly throughout life" is false because at a particular age or due to several factors scalp hairs stop growing.
Scalp hair growth rate depends on three main factors including sex (female hair grows faster than male), age (hair growth slows with age), and ethnicity (Asian hair grows slower than Caucasian hair).
Scalp hair growth stops because of follicle devitalization when the hair length become two or three feet.
Hence, the correct answer is A. "scalp hairs grow constantly throughout life".
A forest ecosystem is a natural woodland unit consisting of all plants, animals and micro-organisms (Biotic components) in that area functioning together with all of the non-living physical (abiotic) factors of the environment. The forest ecosystem is very important.
Answer:
Ice is not an organic molecule.
Explanation:
Organic molecules are a specific type of molecule that contain at least one carbon atom that is attached to other atoms such as Hydrogen, oxygen.
In the given question lipid,carbohydrate and nucleic contain carbon atoms that are linked together with Hydrogen atoms, oxygen atom and nitrogen atom as a result they can be categorized as organic molecule.
on the other hand ice is the solid form of water(H2O) which itself is an inorganic molecule,from that point of view ice is not an organic molecule.
Answer:
Independent assortment is random and occurs during Metaphase I of meiosis. There are two possible alignments for the chromosomes.
