Answer:
Iodine
Explanation:
Iodine is needed by animals because the body's metabolic rate is controlled by the action of an iodine hormone, called thyroxine, which is secreted by the thyroid gland in the neck.
If the animal fails to supply enough iodine through food to be able to make a normal amount of this compound, then the thyroid gland enlarges or expands trying to create enough, resulting in a common type of goiter.
Answer:
Option (3).
Explanation:
Batch culture may be defined as a type of culture which are refereed as stack and operated as influx of the reactant up to the maximum level. This technique is generally used to grow the micro organisms.
The cell mass do not decrease or increases as the cell divides in the batch culture. The new batch are added during the culturing process. The cell mass remains constant in batch culture.
Thus, the correct answer is option (3).
Answer:
The scientist's conclusion is most likely unreliable because he just interviewed people watching movies in the theatre. He should have interviewed an equal number of people from the theatre and from home to get reliable results. According to the scientific method for designing an experiment, the experiment or survey conducted by scientists is not correct. Hence, the scientist's conclusion is wrong because his method of experimentation was wrong.
