Question

determine if it is TRUE or FALSE. If you determine it to be a FALSE statement,change it to be a TRUE statement.

A. TRUE or FALSE: It was a hot July day and you are dehydrated; you notice that your urine production decreases. One of the reasons for this is because filtration decreases as a result of the decrease in glomerular plasma osmotic pressure.

B. TRUE or FALSE: After leaving the right atrium, blood then passes through the tricuspid valve and into the right ventricle, then through the bicuspid valve and into the pulmonary trunk before leaving the heart and going to the lungs to pick up oxygen through two pulmonary veins.

C. TRUE or FALSE: Our T and B lymphocytes are critically important to our immunity because T cells produce antibodies and B helper cells start the specific defense cascade by sensitizing cytotoxic T cells and memory T cells.

D. TRUE or FALSE: A patient, Kurt, who has recovered from COVID-19 is asked to donate plasma. The hope is that someone currently suffering from COVID-19 can borrow Kurt’s antibodies to the virus to be cured. This is an example of passive immunity.

E. TRUE or FALSE: Many scientists are working around the clock to develop a vaccine against COVID-19. This vaccine, once given, would cause our immune system to react against the virus and develop memory cells. This is also an example of passive immunity.

F. TRUE or FALSE: You have just eaten a cheeseburger. All of the nutrients are mechanically digested in the oral cavity, esophagus, and stomach. The starches are chemically digested in the oral cavity and small intestines. The proteins are chemically digested in the oral cavity, stomach and small intestines. The fats are chemically digested in the small intestines.

Answer 1

A) False : Glomerular plasma osmotic pressure is an opposing force to th ehydrostatic pressure if this pressure decreases than filtration should increase not decrease.

B) False.

After leaving the right atrium, blood then passes through the tricuspid valve and into the right ventricle, then through the pulmonary semilunar valve and into the pulmonary trunk (not bicupsid valve)

C) False.

B cells produce antibodies, T cells recognise and kill virus-infected cells directly.

D) True.

E) False.

This is an example of active immunity, Active immunity results when exposure to a disease organism triggers the immune system to produce antibodies to that disease. Exposure to the disease organism can occur through infection with the actual disease (resulting in natural immunity), or introduction of a killed or weakened form of the disease organism through vaccination

F) False.

Mechanical digestion of protein begins in the mouth and continues in the stomach and small intestine. Chemical digestion of protein begins in the stomach and ends in the small intestine