If the bacterium Staphylococcus aureus experiences a cost for maintaining one or more antibiotic-resistance genes, what would happen in environments that lack antibiotics?
A) These genes would be maintained in case the antibiotics appear.
B) These bacteria would be outcompeted and replaced by bacteria that have lost these genes.
C) These bacteria would try to make the cost worthwhile by locating and migrating to microenvironments where traces of antibiotics are present.
D) The number of genes conveying antibiotic resistance would increase in these bacteria.
B
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If a woody plant in dormancy is placed in a
greenhouse so that only one limb is exposed to the cold winter temperatures, eventually the a. whole plant breaks dormancy and starts growing. b. parts of the plant that were inside the greenhouse start blooming. c. limb exposed to the low temperature dies. d. limb exposed to the low temperature breaks dormancy. e. limb exposed to the low temperature never forms seeds.
Genetic modification of immune cells has not been shown to be an effective leukemia treatment
a. True b. False
________ refers to a structure of a protein in which two or more polypeptide chains bind together to form a functional protein
Fill in the blank(s) with correct word
Why is it necessary to take an interdisciplinary approach to studying biology?
A. Research methods used to solve many biological questions often require a number of different types of approaches and the expertise of a variety of scientists. B. Interdisciplinary approaches are required to answer all scientific questions since all disciplines borrow knowledge from each. C. An interdisciplinary approach is the only way we can further our biological knowledge.