Campylobacter is a mesophilic bacteria able to grow at 4 ° C. It is referred to as a _______.
A) mesophile
B) psychrotroph
C) psychrophile
D) thermophile
B) psychrotroph
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True or false? _____ Mutations always result in negative effects on the organism. _____ Mutations are always large-scale (e.g., involving at least 10,000 base pairs of DNA)
DNA). _____ Mutations are never large-scale (e.g., involving at least 10,000 base pairs of DNA). _____ Most mutations are caused by an environmental pollutant. _____ Mutation rates are constant in all organisms. _____ Mutation rates are higher in men than in women because men have higher metabolic rates than women. _____ Mutation occurs every time a cell divides. _____ All mutations provide genetic variation on which evolution may act. What will be an ideal response?
What role does clathrin play in receptor-mediated endocytosis?
a. Clathrin is the receptor where the highly specific binding takes place. b. Clathrin initiates the transcription of the receptor proteins that will coat the pit. c. Clathrin attaches to the plasma membrane’s cytoplasmic side, forming the coated pit. d. Clathrin production blocks the formation of the coated pit.
_____ are inorganic substances with metabolic roles that no other substance can fulfill
a. Fats c. Vitamins b. Minerals d. Simple sugars
Hematopoiesis occurs in different organs at different periods in development. Which of the following is the correct set of organs, in the correct order?
A. Liver - Spleen - Bone Marrow B. Spleen - Liver - Bone Marrow C. Liver - Yolk Sac - Spleen - Bone Marrow D. Yolk Sac - Liver - Spleen - Bone Marrow E. Yolk Sac - Spleen - Liver - Bone Marrow