according to the fluid-mosaic model of membrane structure
A. proteins make up the bulk of the membrane
B. proteins float inside or within the phospholipid bilayer
C. only lipids are found in the membrane
D. cholesterol is the main constituent of the membrane
Ans: B. proteins float inside or within the phospholipid bilayer
You might also like to view...
Which of the following mechanisms may be responsible for the occurrance of exon shuffling?
A. double crossover could promote the insertion of an exon into another gene. B. nonhomologous recombination. C. transposable elements may promote the movement of exons. D. both nonhomologous recombination and transposable elements. E. none of these are mechanisms responsible for exon shuffling.
Alexander Fleming kept finding mold contamination that was killing his bacterial cultures. This observation eventually lead to the development of the antibiotic penicillin. Why would a fungus produce a compound that is selectively toxic to bacteria?
A. Fungi eat bacteria. B. Fungi are killed by bacterial toxins. C. Fungi compete with bacteria for resources. D. Killing bacteria is an accident. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about fungi and bacteria? 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?
Cytosine makes up 42% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be thymine?
A) 8% B) 16% C) 42% D) 58%
The most durable element of the cytoskeleton in animal cells is a system of tough, fibrous protein molecules twined together in an overlapping arrangement?
What will be an ideal response?