<span>They are made up of nitrogenous bases, sugars, and phosphates. Nucleic acids are molecules like DNA and RNA. The sugars and phosphates form the "backbone", and the nitrogenous bases are what actually holds the genetic information.</span>
A - The alveoli have a membrane that is only one cell thick to allow for a short diffusion time to capillaries.
Answer:
The meaning of word molecule is The group of atoms forming a group is called molecule
In simple word , 2 or more atoms combine together to form a molecule for ex - Carbon dioxide ( 2 atoms of carbon and 1 atom of oxygen)
Answer:
Iodine in the food items included in the diet
Explanation:
The thyroid hormones (T3 and T4) are the lipid-soluble hormones and are formed when iodine is attached to the amino acid tyrosine. The triiodothyronine (T3) has three atoms of iodine while tetraiodothyronine (T4) has four atoms of iodine attached to the benzene rings of tyrosine.
Hence, the synthesis of T3 and T4 hormones by thyroid gland depends on the availability of iodine atoms which in turn mostly comes from the diet.
Active transport of iodide ions occurs from the blood into the cytoplasm of the follicular cells of the thyroid gland. In fact, most of the iodide ions are concentrated in the follicular cells of the thyroid gland in the body. Diet serves as a source of iodine and the diet deficient in iodine leads to malfunctioning of the thyroid gland.
Answer: The correct answer is option (A) Anaerobic respiration.
Explanation: Cellular process releases energy by breaking down glucose when oxygen is not available is anaerobic respiration. Anaerobic respiration occurs in those plants where oxygen is not available. It is mostly occur in plants when roots are present in water logged condition. In anaerobic respiration, glucose is broken down into lactic acid and energy is released.
