I'm pretty sure the answer is B
The answer is "D"
The body's first line of defense is also known as Innate immunity and incudes mucous membranes. Both the intact skin and mucous membranes of the body offer a high degree of protection against pathogens.
A good example is the mucous membrane of the respiratory tract. It is lined up with cilia and covered with mucus. The coordinated beating of the cilia drives the mucus up to the nose and mouth where the trapped bacteria can be expelled.
(Lymph nodes and white blood cells belong to the second line of defense, not the first)
The replication time for a virus starting at 1,500 units to lyse the cell is 5 hours.
<h3>How to calculate the Exponential growth/decay formula?</h3>
x ( t ) = x 0 × (1 + r ) t
- x(t) is the value at time t.
- x 0 is the initial value at time t = 0.
- r is the growth rate when r/ 0 or decay rate when r < 0, in percentage.
- t is the time in discrete intervals and selected time units.
Whit this information, we can conclude that the replication time for a virus starting at 1,500 units to lyse the cell is 5 hours.
Learn more about replication in brainly.com/question/13685752
