Question 30 Which of the following is matched CORRECTLY? GC hairpin loop - termination of prokaryotic transcription O promoter -

Biology

Biological Classification Solutions

Match the term with the appropriate description to test your understanding of the diversity of oxygen requirements among microorganisms Obligate anaerobe Describes an organism that requires oxygen for growth and has the enzymes to remove toxic by-products of oxygen metabolism Microaerophile Describes an organism that can grow in the presence of oxygen and can detoxify it, but can also grow in the absence of oxygen Facultative anaerobe Describes an organism that cannot grow at normal atmospheric oxygen concentrations, but does require a small amount of oxygen for growth Obligate aerobe Describes an organism that is unable to use oxygen and lacks the enzymes to detoxify oxygen, thus requiring the absence of oxygen for growth Aerotolerant anaerobe Describes an organism that does not use oxygen, but can grow to a limited extent in the presence of oxygen Reset

Biology

Biological Classification Solutions

X Question 21 1 Point Many peptic ulcers are due to A Paramyxovirus B Streptococcus mitis Salmonella enterica D Helicobacter pylori Question 22 1 Point Escherichia coli is a member of healthy intestinal flora and usually is harmless, useful in aiding digestion, synthesizing vitamins that are helpful in digestion, and important because they assist in suppressing the growth of pathogenic organisms. A True B False

Biology

Biological Classification Solutions

16. Botulinum toxin, or Botox, has a very low LD50 and is from a gram positive organism? What type of toxin is it? 17. What is one technology from lecture that has increased the amount of human pathogens and how did it happen? 18. What is ID50 and why is it important? Which makes it easier for a pathogen to infect a new host