Platelets are formed when fragments from large cells called ________ break off
Fill in the blank(s) with correct word
megakaryocytes
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A person has a mutation in the gene for DNA uracil glycosylase. What is the most likely result of this mutation?
A. an increase in mutations B. the inability to produce mRNA that has uracil in it C. the inability to produce mRNA that has cytosine in it D. Nothing. This enzyme is only involved in silent mutations. E. None of the answer options is correct.
Which of the following fields of study provide useful information for making decisions about conservation?
A. physiology B. genetics C. agronomy D. veterinary science E. All of these fields provide useful information for making decisions about conservation.
What is the substrate of the first step in the citric acid cycle?
A. Pyruvate B. Coenzyme A C. Fructose bisphosphate D. Oxaloacetate E. Citrate
Select the correct statements about MacConkey agar. (Check all that apply)
A.The lactose in MacConkey agar is inhibitory to Gram positive cocci. B.The selective ingredients in MacConkey agar are crystal violet and bile salts. C.The growth of Gram positive bacteria is inhibited on MacConkey agar. D.Most Gram negative bacilli grow well on MacConkey agar. E.The pH indicator in MacConkey agar is crystal violet. F.The differential ingredients in MacConkey agar include lactose and neutral red. G.Lactose-fermenting Gram negative bacilli will form pink-purple colonies on MacConkey agar.