Which is a feature of prokaryotic cells but NOT eukaryotic cells?
A) fimbriae
B) cell wall
C) flagella
D) ribosomes
A) fimbriae
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The majority of the heat that is transferred from the earth to the atmosphere is transferred by:
a. radiation of heat into the atmosphere. b. evaporation of water. c. absorption by the lithosphere. d. reflection of heat into space.
The cohesion-tension theory explains that water is moved upward in plants by means of ________
a. all of the choices b. hydrolysis of ATP fueling active transport c. positive pressure pushing from engorged roots d. tension from transpiration
Which of the following is/are a sign or symptom of meningitis?
A. Fever B. Stiff neck C. White blood cells in cerebrospinal fluid D. Headache E. All of the choices are correct.
You are designing a fast assay system for detecting flu virus in patients. You hope to send these tests to clinics in far-flung regions of the globe so they can conduct surveillance on influenza epidemics. The kits will need to remain functional for several years. What type of antibody will you choose?
Two kinds of custom antibodies are available -- monoclonal or polyclonal. Polyclonal antibodies respond to a mixture of epitopes from the injected antigenic material; monoclonal antibodies are from a hybridoma strain created from a single B lymphocyte, and thus respond to a single specific epitope. A. polyclonal B. monoclonal