Answer:
The answer is D. Ciliated mucous lining in the nose.
Explanation:
Most inspired particles, such as dust, do not reach the lungs due to the CILIATED MUCOUS LINING OF THE NOSE. The nostril is covered with a mucous membrane that has a mucus-producing epithelium, and has hair cells covered with thin hairs, called vibrating cilia, which displace mucus, immune system cells, and numerous substances capable of blocking bacteria, Viruses and harmful substances. It is the first line of defense of the immune system.
Answer:
Those that are able to acquire their food and shelter needs in order to survive and reproduce.
Explanation:
It’s b chromosomes because the cell nucleus contains the majority of cells genetic material in the form of multiple linear DNA molecules
Answer: True,
Small amounts of hormones have large effects on an organism because the signals are amplified between glands and tissues due to the second messenger systems.
explanation:
Second messemgers are the intracellular molecules which are activated by the extracellular molecules. Second messengers intracellulary triggers physiological changes such as proliferation differentiation migration etc.
When hormones are released they bind to specific receptors such as G-coupled recptors,tyrosine recpetor which when activated further activates second messengers such as cAMP and STAT respectively.
These second messengers amplify the hormone secretion and production by phosphorylation and increasing transcription.
Hence this is true that second messnegers amplify the hormones and their physiological results.
