Answer:
The correct answer is D.
Explanation:
Bordetella pertussis is a gram-negative coccobacillus that causes a disease called whooping cough.
The bacterium infests the patients by colonizing lung epithelial cells. To do so, it requires adhesins, called filamentous haemagglutinin, fimbriae and pertactin. Once the bacterium is attached to the lung epithelial cells, it produces a cytotoxin that prevents their cilia from moving.
Another virulent factor from B. pertussis is the pertussis toxin, which alters host immune system through the inhibition of phagocytes response to it.
Answer: That sounds great!
Explanation: your body needs sleep to restore the days information that you learnt and to 're -new' your brain and hormones etc. What you said is correct
Hope this helped x
Reduced blood volume leads to collapsing vessels, reduced pressure, and subsequently reduced perfusion pressure. The cardiovascular system combats low blood volume by constricting blood vessels until the body reaches a blood pressure that restores proper perfusion pressure.
Answer:
Muscle Build and Building a tolerance
Explanation:
As you work out or even just moving excessively, your muscles tear in tiny amounts to heal the body sends cell to patch up that area over time the cells will just keep stacking up. This is where the tolerance comes in since their is so many cells built up its harder for them to "rip" It sounds like a huge rip but its more of a tiny little rip not even enough to hurt.(until the next day.)
Answer:
Option b) chromosomes
Explanation:
The correct answer for the given question is option (b) Chromosomes.
The whole structure of the sperm contains the various components which are
as follows:
The head of the sperm contains the nucleus and the chromosomes
The neck contain of the sperm contains the mitochondria
the tail of the sperm contains the flagella.
