In electron micrographs, the appearance of the T tubule with the terminal cisternae on either side appears as three circles called a(n) ________.
Fill in the blank(s) with the appropriate word(s).
triad
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Which of the following statements describes the law of segregation?
a. Two alleles will be inherited together during gamete formation. b. Two genes will be inherited together during gamete formation. c. Two alleles will segregate during gamete formation. d. Two genes will segregate during mitosis.
in an isotonic solution, what happens
What will be an ideal response?
Which statement best represents the difference between ectotherms and endotherms?
a. Ectotherms rely on homeostatic mechanisms to maintain body temperature. b. Ectotherms have a very high daily energy expenditure. c. Endotherms rely on behavior modification to maintain their body temperature. d. Ectotherms derive heat from metabolic processes. e. Ectotherms animals outnumber endotherms.
You isolate a pathogenic strain of E. coli from a patient and discover that this E. coli strain is resistant to an antibiotic. Common laboratory strains of E. coli are not resistant to this antibiotic,
nor are any other previously isolated pathogenic E. coli strains. However, such resistance has been observed in other bacteria in the hospital in which the patient was treated. This newly discovered antibiotic resistance in E. coli is most likely due to _______. (a) a mutation within a gene. (b) a mutation within the regulatory DNA of a gene. (c) gene duplication. (d) horizontal gene transfer.