Elements that are required in relatively large amounts by microorganisms are called
A. macronutrients.
B. meganutrients.
C. multivitamins.
D. macromolecules.
Answer: A
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Imagine that a young girl suffers a horseback-riding injury, and one of her ribs punctures her diaphragm. How will this injury affect the girl's breathing? Select all correct choices
A. The injury will make it easier to increase negative air pressure in her chest cavity, making inhalation easier. B. The injury will make it more difficult to increase negative air pressure in her chest cavity, making inhalation more difficult. C. The injury will make it more difficult to decrease negative air pressure in her chest cavity, making inhalation more difficult. D. The injury will not affect her at all, as intercostal muscles are responsible for breathing
Which of the following is not an essential component of the bacterial termination and release stage of translation?
A. IF-3 B. GTP C. stop codon in mRNA D. RF-1
How is Chaga’s disease transmitted?
a. The Anopheles mosquito bites the victim and passes Trypanosoma gambiense via the saliva. b. The Glossina tsetse fly bites the victim and passes Trypansoma brucei in the feeding tube. c. The kissing bug (Triatoma) bites the victim, defecates in the wound, and passes Trypanosoma cruzi to the victim in the feces. d. The victim drinks water contaminated by the feces of an organism with an active infection and Giardia lamlia is in the water.
Which of the following scientist-discoveries is mismatched?
A. Griffith-chromosomes. B. Watson, Crick, Wilkins, and Franklin-DNA structure. C. Meselson and Stahl-mechanism of DNA replication. D. Avery, MacLeod, and McCarty-DNA is the genetic material.