While walking along the beach at Point Lobos, California, the fellow pictured walks up to you with algae in hand. Figuring you to be a college student who has probably had a good introductory biology course, he asks if you know what it is.
(a) What is the cell wall component of the organism that has commercial value?
(b) Name three uses for that cell wall component.
(a) What is the cell wall component of the organism that has commercial value? Algin
(b) Name three uses for that cell wall component. Makes ice cream smooth, cosmetics soft, and paint uniform in consistency.
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Sharks live in seawater. Their tissues are isotonic to seawater, but their concentrations of sodium ions, potassium ions, and chloride ions in cells and extracellular fluids are similar to those of freshwater fishes
How is that possible? A) Urea and trimethylamine oxide contribute to intra- and extracellular osmolarity in shark tissues. B) Metabolic intermediates of sharks tie up intracellular chloride and potassium ions. C) Their blood is hypotonic to their tissues. D) They excrete large quantities of electrolytes.
Many insects, like moths and flies, undergo complete metamorphosis. What would you predict about gene expression in these two kinds of insects?
A. The basic organization of homeotic genes is the same in both larvae and adult, but the expression of some other genes must be different. B. Completely different sets of genes must be used in the development of larvae and the adult. C. The order of homeotic genes along the body axis must be different in larvae and adult. D. The same genes are expressed at each stage, but the age and number of cells accounts for the minor morphological differences. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about homeotic genes and metamorphosis? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach 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?
The simplest of the eukaryotes are the:
a. protistans b. plants c. fungi d. animals e. Archaea
Driving along a rural two-lane highway, you notice a kestrel perched on a telephone line approximately every mile or so. This pattern continues for quite a few miles. What type of distribution applies to this example?
A) clumped B) uniform C) random D) normal