Glial cells are cells found in which type of tissue?
A) epithelial B) connective C) muscle D) nervous
Answer: D
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The area of study that is involved with comparing genome characteristics and entire genome sequences is called ________
Fill in the blank with correct word.
Evidence suggests that factors which contribute towards the virulence of E. coli strain O157:H7, a bacterial strain reported to cause several food poisoning deaths, are caused by genes from a virus that infects bacteria
Considering this evidence, which statement most likely explains how the O157:H7 population acquired the genetic variation that distinguishes the strain from harmless E. coli strains, such as those that reside in our intestines? A) The virus entered the bacterial cell and incorporated its DNA into the bacterial genome, allowing the bacteria's cellular machinery to create new viruses. B) Viral envelope proteins bind to receptors on the bacterial membrane, allowing the viral genetic material to enter the bacterium and become translated into proteins. C) The virus entered the cell and acquired specific genes from the bacteria to increase the virulence of the virus. D) The virus infected the bacterium, and allowed the bacterial population to replicate with a copy of the phage genome in each new bacterium.
Groups of flowers tightly clustered together are called an
a. floret b. ament c. catkin d. inflorescence e. telament
Which genus is best described as oxidase-positive, Gram-negative cocci that are normal flora of the respiratory and other mucosal surfaces and often form diplococci?
A. Neisseria B. Chlamydia C. Streptococcus D. Staphylococcus