An exaggerated attack on a harmless antigen by an overly sensitive immune system is termed a(n)
A. autoimmune disease.
B. primary immune response.
C. secondary immune response.
D. allergy.
E. innate defense stimulator.
D. allergy.
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You are performing a karyotype for the first time and you forget to add the colchicine. How do you predict this will affect your karyotype?
A. No affect - your karyotype will look normal. B. You will be unable to see any chromosomes under the microscope. C. You will only be able to see one of each chromosome. D. The chromosomes in some cells will look normal (highly compacted) but in other cells distinct chromosomes will be hard to identify
What is the nutritional value in cereals, provided by seed plants, to humans?
a. proteins b. vitamins c. carbohydrates d. lipids
Which nucleic acid acts like an enzyme, stabilizing and orienting different molecules to facilitate the formation of bonds between them?
A) DNA B) rRNA C) tRNA D) mRNA
Fetal blood flows through_____________which project into the placental.
Fill in the blank(s) with the appropriate word(s).