Tamiflu shortens the duration of flu symptoms, but it doesn’t stop you from spreading the virus. I think your teacher is pulling a trick question on you.
Answer:
False
Explanation:
An embryo is termed as fetus beginning in the 11th week of pregnancy,which will be the 9th week of development after fertilization of the egg. This embryo is 'termed' , they are not same.
Answer:
In instrumental conditioning,the distinction between negative reinforcement and punishment is that " Negative reinforcement occurs when a negative outcome is avoided, while punishment occurs when an action causes a negative outcome."
Explanation:
Instrumental conditioning also known as Operant conditioning this is a theory where associative learning process through which the strength of a behavior is modified by reinforcement or punishment. It is also a procedure that is used to bring about such learning.
Answer:
(c). cytopathic effects of viruses acute viral infections.
Explanation:
Cytopathogenic effect or cytopathic effect can be described as the structural changes in cells of host due to viral infection.
Some examples of cytopathic effects are:
-rounding of viral infected cell.
-formation of syncytia by fusion of adjacent cells and polykaryon development. During this, cell membrane or 4 or more host cells join together and form an enlarged cell with 4 or more nuclei.
-formation of cytoplasmic or nuclear inclusion bodies. Inclusion bodies represent abnormal, insoluble structures formed in cytoplasm or nuclei.
Thus, the correct answer is option (c).
