Paneth cells ________.A. are more common in the ileum than in the jejunum
B. are absorptive cells in the small intestine
C. secrete enzymes that kill bacteria
D. are located next to the lacteal in a villus

Answer:

Plantarflexion

Explanation:

The term plantar flexion refers to the movement of the foot in a downward motion away from the body.

Answer:

Option 2

Explanation:

Electrophoresis or in general known as "Gel electrophoresis" is a process by which separates and arranges DNA as per their size. In this process, DNA samples are placed at one end and at the other end electric current is applied. As we know that DNA fragments carry negative charge on them, hence they move towards the positively charged electrode. Also, all the DNA fragments have the same charge on it, therefore the larger the DNA fragment the more negatively charged the DNA is and hence the more rapidly it moves towards the positive electrode.  

At the end of the electrophoresis, same-sized DNA fragments arrange themselves in a row.  

Hence, option 2 is correct

Answer:

It is because of different arrangements of nucleotide bases.

Explanation:

There are only five types of nucleotide basis are present in the genetic material which makes up the all the genetic information of the individuals. These nucleotides are named as Adenine, Thymine, Guanine, Cytosine and Uracil. In all the living beings on the earth, these only five nucleotides are present which decides their behavior and functions on the earth. These five bases have features to get any arrangements according to the situation. Their different arrangement at the heredity material makes the difference in all living beings regarding their behavior.

During intense exertion or activity involving the muscles, there arises a need for a sudden short term burst of energy. This need for energy is so demanding that it cannot be satisfied through the normal mechanism  whereby energy is supplied through aerobic respiration using oxygen.

Therefore the muscle cells must rely on other mechanisms that do not rely on oxygen to fuel muscle contraction and this is where they resort to anaerobic respiration which uses pyruvate to play the role of oxygen as the final electron acceptor. In the process, pyruvate accepts an electron and is reduced to lactic acid in the muscle tissues.