Answer:
D. The auditory tube drains into the nasopharynx.
Explanation:
The auditory tubes, commonly known as eustachian tubes have their pharyngeal openings in the lateral wall of the nasopharynx. Auditory tubes also prevent the mucus to enter the middle ear by channelizing it into the nasopharynx. This clearance of mucus does not allow any infection to spread to the middle ear.
Answer:
D.
Explanation:
That is where it demonstrates how the word is said. it's easy to identify this because the pronunciation always comes right after the word itself in the definition.
There would still be a 50% chance for the offspring to be Heterozygous (Hybrid), but then there would be another 50% chance for the offspring to be Homozygous recessive (True-breeding short plants)
Answer:
D. J. J. Thomson
An atom of calcium
Explanation:
J.J. Thomson while carrying out his experiment on the gas discharge tube discovered electrons. He called them cathode rays.
He observed from his experiment that these rays have the following properties;
- they move in a straight line normal to the cathode
- posses kinetic energy and cause the motion of a mechanical paddle
- attract positive charges
From his experiment, he proposed the plum pudding model of the atom where an atom is made up essentially of electrons.
B. The smallest particle of calcium that has all the chemical properties of calcium is an atom of calcium.
It is upon these unit of calcium that the substance calcium is formed. An atom of calcium will show the same properties as a block of calcium.
Answer: by insufficient oxygen supply
Pain due to decreased blood flow during exercise (often in the legs) is caused by insufficient oxygen supply
Explanation:
During exercise, the skeletal muscle are vigorously contracting, and the body consumes oxygen to produce energy faster than it takes in.
Under such conditions, pyruvate (the end product of glycosis) cannot be oxidized due to lack of oxygen. Thus, it is then reduced to lactate and then pain start to be felt in extreme body parts such as the legs.