14 Jun Question Question 1 Which of the following
Question
Question 1
Which of the following white blood cells kills its target cells by releasing chemicals that break down the target cell membrane?
Answer
natural killer cells
B lymphocytes
basophils
T lymphocytes
macrophages
1 points
Question 2
Which of the following is not true regarding the circulatory system?
Answer
This system ensures that waste products are removed from all tissues of the body.
This system is made up of the blood vessels, heart, and blood.
The circulatory system has an important role in the exchange of gases in the lungs.
During fetal development, the circulatory system develops from the lymphatic system.
This system carries excess water and salts to the urinary system.
1 points
Question 3
Eosinophils are especially important in defending the human body from infection by:
Answer
bacteria.
viruses.
molds.
large parasites.
both bacteria and viruses.
1 points
Question 4
The primary immune response
Answer
involves recognition of an antigen.
typically has a lag time of 3 days.
involves the production and proliferation of T cells.
produces antibodies and immunity.
All of the above
1 points
Question 5
An increased risk for cardiovascular health problems is associated with:
Answer
an elevated level of hemoglobin.
high blood levels of HDLs.
decreased production of albumins.
high blood levels of LDLs.
low blood levels of LDLs.
1 points
Question 6
In some countries, there is not enough money to support the development of vaccines; those that are developed are difficult to administer. Therefore, researchers are attempting to genetically engineer bananas to produce oral vaccines, making it easier to deliver the vaccine to individuals.
Answer
True
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