Answer:
Melanin is part of the epithelial
Answer:
One cell Fungi are made up of one cell.
Explanation:
Answer:
C
Explanation:
through captive breeding. Once they are breed, they should be released
Answer:
Subduction is the submerging of one plate under another hence can only occur in convergent boundaries where plates are colliding head on with each other.
Explanation:
Divergent boundary- plates moving away from each other
Transform boundary- plates 'sliding' across each other
Answer:
The answer is <em><u>D.
</u></em>
Explanation:
Viruses can evade the processing and presentation of antigens, for example by interfering with the expression of MHC class I proteins, although this increases their susceptibility to be detected by natural killer cells (NK). However, some members of the herpesvirus, papillomavirus, retrovirus, poxvirus and flavivirus families have also developed strategies to escape the attack of NK cells and promote their survival, inhibiting cell apoptosis. Finally, some pathogens often change surface antigens frequently, as in the case of influenza viruses (orthomyxovirus).
The human immunodeficiency virus (HIV) affects CD4 + T cells and degrades the host's ability to counterattack with a strong cell-mediated immune response. There are so many tactics of immune evasion used by HIV, which have so far hindered the development of an effective vaccine.
