Lamarck’s contribution to the theory of evolution is the concept of
a. natural selection.
b. catastrophism.
c. inheritance of acquired characteristics.
d. mutation.
e. geographic distribution of organisms.
Answer: c
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Opportunistic pathogens such as Legionella, Pseudomonas, and Mycobacterium species have the ability to grow within ________, which may enhance their ability to survive in water distribution systems
A) human saliva B) fish C) protists D) UV irradiated water
Imagine you are talking to your friend who is very excited because he has just transduced his first batch of bacteria in the laboratory. What does this mean?
A. He introduced a gene of interest into his bacteria using viruses. B. He introduced a gene of interest into his bacteria using other bacterial species that can form pili. C. He introduced a gene of interest into his bacteria by lysing other bacterial cells and exposing his bacteria to this mixture. D. He produced a strain of antibiotic-resistant bacteria by exposing his bacterial cultures to antibiotics. E. Through periodic selection, he was able to isolate a gene of interest in his bacteria.
Glyceraldehyde 3-phosphate is an intermediate in the Calvin-Benson cycle.
Answer the following statement true (T) or false (F)
Who of the following was the first to observe and accurately describe microorganisms?
A. van Leeuwenhoek B. Tyndall C. Lister D. Pasteur