Answer:
1 - Malaria
2- Typhoid fever and Tuberculosis
Explanation:
In case of malaria, the causal microorganism is Plasmodium falciparum, which target red blood cells of host. In humans who have defective sickle cell allele, have abnomral shaped red blood cells. So microorganism does not able to attach to abnormal shaped RBCs thus humans having sickle cell allele are more resistant to death caused by malaria.
In cystic fibrosis, mutation on that gene which encodes a protein known as cystic fibrosis transmembrane conductance regulator (CFTR).
Normally Salmonella typhi (bacteria responsible for typhoid fever) enters into intestinal cells by attaching with CFTR receptor. Carriers of cystic fibrosis mutant gene, have abnormal CFTR thus reduced rate of entry of bacteria into carriers.
Normally Mycobacterium tuberculosis (bacteria responsible for tuberculosis) adds sulfate in its cell walls. In carriers of cystic fibrosis, arylsulfatase B activity is reduced which incorporates sulfate. Thus reduced arylsulfatase activity makes bacteria unable to add sulfate in its cell walls thus decreases their virulence to carriers of cystic fibrosis.
Answer: option C) Direct control of the nervous system
Explanation:
Hormonal stimulus does ALL except to direct the control of the nervous system. The nervous system is directly controlled by the BRAIN AND SPINAL CORD by the help of nerve impulses NOT hormonal stimulus.
On the other hand, hormonal stimulus brings about
- increase in enzymatic activity
- change in membrane potential
- stimulation of a genetic event resulting in protein synthesis
So, option C is the right option
Q+ZT -> Z+QT
hoping that's correct or are there any answer choices?
<span>D) a structure made of two or more tissues functioning together for a common purpose.
This is because of the different levels of life. Cell, then tissues, then organs.</span>