Answer:
The testes are oval organs about the size of very large olives that lie in the scrotum, secured at either end by a structure called the spermatic cord. Most men have two testes. The testes are responsible for making testosterone, the primary male sex hormone, and for producing sperm.
Explanation:
The polio vaccine works as :
It triggers the immune system to produce antibodies to fight the disease causing agent.
Option 1 is the correct answer.
Explanation:
Polio vaccine is attenuated disease causing virus which helps in the production of antibodies to fight the disease. The immunity for polio gets develop in the individual given polio vaccines.
Jonas Salk discovered the the vaccine for polio by using inactivated polio causing virus.
The polio vaccine produces antibodies in the blood when interaction with polio virus is there.
The paralysis of the legs can be prevented as polio virus do not reach the nervous system and spinal cord of the individual.
There are two types of polio vaccines given across the globe:
oral polio vaccine and inactivated polio vaccine (via injection)
<span><span>The above statement is false. Compared to deep ocean water, water in the surface has the lesser supply of rich inorganic nutrients. But due to upwelling, </span>the absolute concentration of nutrients in the surface will be higher.</span>
<span>Upwelling brings those lost/sunk nutrients, plankton and carcasses to the surface. The surface then becomes feeding grounds for fish and other ocean life. </span>
The answer is C. A gene is a segment of a DNA strand.
