To white things because it blends in
The answer is
letter C.
<span>
The Zygomycota is a phylum
of fungi that consists of decomposers that utilize flagellated spores. The
flagellated spores are formed during sexual reproduction. There are
approximately 1,050 species known to be included in this phylum. They are
usually found living in soil or on decaying plants and animals. Some of the
zygomycota are parasites of plants, insects, and small animals. They also have
a tendency to form symbiotic relationships with plants.</span>
Answer;
Statocysts
Explanation;
-The small organs of equilibrium in scyphozoan jellyfishes are called statocysts, and these are borne in more complex sense organs called rhopalium.
The statocyst is a balance sensory receptor present in some aquatic invertebrates, including molluscs, bivalves, cnidarians,ctenophorans, echinoderms, cephalopods and crustaceans. These structures aid in orientation and balance during swimming in medusae and are located around the margin of the bell in Craspedacusta.
Answer:
A. Natural killer (NK) cells are activated in response to interferons or macrophage and Major histocompatibility complex (MHC) and allows direct apoptosis of virus.
Viruses can invade NK cells by inhibiting MHC from reaching the cell surface. Using stimulating the inhibitory receptors and disrupting the activating receptors, viruses can avoid NK cells. MHC act as a ligand of inhibitory receptor, and when bind with inhibitory receptor allows damage to NK cells.
So, if i would be a virus i will use inhibitory receptors stimulation to avoid NK cells.
B. Bacteria are killed by phagocytic immune cell macrophages by engulfing them.
Bacteria avoid macrophages by escaping from phagosome before the lysosome fuses as lysosomal chemical kill the bacteria and some bacteria prevent acidification of the phagosome.
C. Parasites can avoid macrophages by modulating the host's cell cytoskeleton to block proper phagocytosis.
D. Bacteria can avoid dendritic cells by avoiding lysosomal degradation and prevent antigen presentation on MHC molecules that will modulate the entrance to DCs.
E. B cells are responsible for producing antibodies. Activation of B-cell depends on positive and negative signals transmitted through the B-cell receptor (BCR), so genetic polymorphisms and mutations affects the positive and negative signals. If mutation is done showing negative signal, B cell will not the activate and no antibodies will produce.
