Answer:
C
Explanation:
They turn into fossils! Please crown brainliest!
An advantage of a filter is it cleans the water better then the screen
A disadvantage is that you need to wash and sometimes fix the filter
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.
Hello!! Since the heart is made up of cardiac muscle tissue, they are made up of cardiac muscle cells. These cells are found only in the heart, hence the name “cardiac” meaning heart. Their functions are to pump blood throughout our body enough to keep us alive. Therefore, your answer would be true. I hope this helped!! Have a great day.
Answer:
D. There are more electrons than protons.
Hope i'm right
Explanation:
