Answer:
(d) None of the above
Explanation:
The pH of your stomach must be highly acidic, because the optimum pH for pepsin, the chief stomach enzyme, is 1.5.
(a) and (b) are wrong, because both conditions are basic.
(c) is wrong, because pH 7 is neutral.
Answer:
From smallest to largest:
Capillaries, alveoli, bronchi. bronchioles, trachea, pharynx, nasal cavity.
Answer:
True. You can get vitamin A as "preformed vitamin A" which is already active and/or you can get vitamin A as carotenoids which the body can turn into active vitamin A.
Explanation:
There are two different types of vitamin A that can be obtained from food:
1. Preformed vitamin A, which is already active, is found in animal products such as beef, fish, poultry and dairy products.
2. Provitamin A, which is the inactive form, is found in plant-based foods, such as fruits and vegetables. The most common type of provitamin A is β-carotene, which is a carotenoid that the body can turn into active vitamin A via an enzyme named β-carotene 15,15'-monooxygenase.
Answer: Condensation
Water vapor is water in a gaseous state. Transformation of water into gaseous state
(water vapor) is called evaporation. Transformation of the water vapor into dew
which Michael observed in the early morning is called condensation.
Dew<span> is water droplets
that appears on exposed objects like
leaves in the morning or evening due to condensation</span>
