Nails are made out of what?
A. All of the Above
B. Terminal
C. Vellus
D. Keratin
Select your answer:
Topics:
Virus Nervous System Nail Diseases and Disorders Human Urinary System Orthopaedic Neurology Transport system in Living Things (Human) Eye or Nose Injuries Restrictive Respiratory Disorders Cardiovascular Med Terms Diagnostics and Pathology Reports Immunology: T cell Development Bacteria, Viruses, and Fungi Human Anatomy and Physiology - Types of Tissues Eye in Color Vision Carbohydrates / Fat-soluble VitaminsOther quiz:
Biotechnology and Genetic Engineering › ViewWhat is a DNA fingerprint used for?
A. To identify an individual at the molecular level
B. To replicate DNA sequences
C. To cut DNA at specific sites
D. To glue DNA nucleotides together
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.