jelly-like substance that holds the organelle in place
A. nucleus
B. cell membrane
C. cell wall
D. cytoplasm
Select your answer:
Topics:
Consciousness and Sleep Brain Herd Immunity Bacteria Structure Cell Injury Anatomy and Histology Genetics and Censorship Tissues Vocabulary The Vascular System and Blood Flow Nervous / Sensory System EKG CCMA Anatomical Terminology Skeleton and Muscles Psychology, Psychiatry or Social Work The Digestive SystemOther quiz:
Circulatory System › ViewWhat antigens are present in a person with type B- blood?
A. B, only
B. B and Rh
C. A and Rh
D. A, only
Microbiology › View
Many men make antibodies to sperm, resulting in destruction of sperm to the point of sterility. What would be the likely origin of this autoimmune disease?
A. T helper cells erroneously identify sperm cells as foreign invaders, triggering the T cytotoxic cells to start killing sperm
B. These antibodies are produced as a result of mutations in T lymphocytes, causing them to make large amounts of antibody.
C. Since sperm are not made until after puberty, the immune system cannot scan the antigens on the sperm for immune tolerance. After sperm are made and the immune system sees them, they are recognized as foreign.
D. Antigens on sperm cells are similar to antigens on a variety of bacteria like Streptococcus. After a strep throat caused by Streptococcus, the immune system produces antibodies to streptococcal antigens, which then cross react with sperm antigens and destroy them.