Which substance is found in RNA but not in DNA?
a. thymine
b. deoxyribose
c. uracil
d. guanine
e. cytosine
Answer: c
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The phase of mitosis in which the nuclear envelope re-forms is
A. C, which is anaphase. B. E, which is telophase. C. B, which is prophase. D. D, which is metaphase. E. A, which is prometaphase.
Einkorn (Triticum boeoticum) is an ancient grain with a diploid number of 14 (2n = 14). Durum (Triticum turgidum) appeared later. Durum grains are larger and the plant is hardier
It has twice the genetic material of Einkorn (2n = 28 ) but contains basically the same chromosomes. Can you propose a hypothesis on how durum evolved?
When vaccines do not provide lifelong immunity, (adjuvants/ boosters/subunits) must be given to maintain protection
What will be an ideal response?
Systemic lupus erythematosus (SLE or lupus) is distinct from other autoimmune disorders because
A) it is also a hypersensitivity disorder. B) it involves an antibody response. C) multiple organs and tissues are affected. D) it may be triggered by an infection. E) there is a genetic predisposition.