Robert Koch sought a "magic bullet" for the treatment of disease caused by bacteria.
Answer the following statement true (T) or false (F)
False
You might also like to view...
Protobionts are thought to be the first nonliving structures that evolved into living cells. A critical characteristic of a protobiont that is found in both modern day prokaryotes and eukaryotes is
A. internal compartments that subdivide metabolic functions. B. a boundary membrane that separates external from internal environments. C. the ability to exclude all organic substances. D. the ability to fuse with any other protobiont for reproduction. E. the ability to recognize other protobionts for developmental purposes.
Impressive was a champion Quarter Horse stallion with a magnificent muscular physique, a trait that he passed on to dozens of offspring. However, many of Impressive's offspring developed periodic muscular twitching that sometimes left the horses temporarily unable to move. Some horses even died. As it turns out, Impressive's award-winning physique was due to a mutation in a single, protein-encoding gene, resulting in hyperexcitable muscle (which contracts even in the absence of a stimulus from its motor neuron). Which is NOT a plausible explanation for the identity of the abnormal muscle protein in Impressive and his offspring?
A. tropomyosin that is unable to bind to actin B. acetylcholine receptors that function in the absence of acetylcholine C. over-active troponin molecules D. leaky Na+ channels E. overactive Ca2+ pumps in the membrane of the sarcoplasmic reticulum Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you know about excitation of muscles? What other information is related to the question? Choose Answer · Given what you now know, what information is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
From the beginning of glycolysis to the end of the Krebs cycle (excluding the ETC), what has the cell gained from the breakdown of each molecule of glucose?
A) 2 molecules of ATP, 4 of NADH, and 2 of FADH2 B) 2 molecules of ATP and 6 of NADH C) 4 molecules of ATP, 10 of NADH, and 2 of FADH2 D) 2 molecules of ATP, lactate, and NAD+ E) 2 molecules of pyruvate
Which of the following is true about natural selection?
Select one: a. It acts on genotypes rather than phenotypes. b. It assures the survival of each fit individual. c. On average, it favors the survival of young with adaptive characteristics. d. It always selects for more complex forms. e. It always selects for forms that are a mutated variation.