× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
New Topic  
sakura7 sakura7
wrote...
13 years ago
1. Virus-blocking enzymes that have been induced by interferon are activated only upon viral invasion of the cell.
A. True
B. False


2. Persons with type A blood produce anti-B antibodies without ever having been exposed to type B blood, but Rh-negative individuals produce anti-Rh antibodies only if they are exposed to Rh-positive blood.
A. True
B. False


3. The mucous membranes that line the body's cavities, such as the lungs and conducting airways, contain antibodies of the immunoglobulin A class.
A. True
B. False
Read 698 times
1 Reply
Replies
wrote...
Educator
13 years ago
1. True

2. True

3. True
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1007 People Browsing
Gallery
  
 64
  
 284
  
 181
Your Opinion
Where do you get your textbooks?
Votes: 372

Previous poll results: What's your favorite coffee beverage?