What is the major challenge with developing new synthetic antimicrobials?
A) deciding what bacteria to test it on
B) finding the right dose
C) the need to screen thousands of potential candidates
D) figuring out if the drug is bacteriostatic or bactericidal
E) choosing which bacterial structure to target
Answer: C
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Answer the following statements true (T) or false (F)
1. Myosin is a motor protein that walks along intermediate filaments. 2. The flagellum is composed of a 9 + 2 arrangement of microtubules called the axoneme. 3. The Golgi apparatus is much like a warehouse; it processes proteins and sorts them for delivery to certain parts of the cell. 4. Materials move in and out of the nucleus via endocytosis and exocytosis. 5. Both lysosomes and peroxisomes are important for detoxifying substances in the cell.
Climbing plants, such as vines, rely on touch to navigate and develop tendrils that coil around objects they encounter. Roots also rely on touch to navigate their way through the soil. When roots come into contact with an object, they generally grow in a direction away from the object. Based on this information, which of the following statements is true?
A. Both tendrils and roots are displaying thigmonastic responses to an object in the environment. B. The tendrils are displaying a thigmonastic response while the roots are displaying a thigmotropic response. C. The tendrils are displaying a positive thigmotropic response while the roots are displaying a negative thigmotropic response. D. The tendrils are displaying a thigmotropic response while the roots are displaying a thigmonastic response. E. The tendrils are displaying a negative thigmotropic response while the roots are displaying a positive thigmotropic response. 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 plant responses to their environments? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? 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?
A pea plant heterozygous for the purple-color gene (Aa) is self-pollinated. What color ratios are expected in the offspring?
a. 3 purple: 1 white b. 1 purple: 2 lavender: 1 white c. 1 white: 3 purple d. 1 purple: 1 white
Conjugation
A) is the direct transfer of DNA from one bacterium to another. B) occurs when a bacterium acquires DNA from the surrounding environment. C) is the result of cell division. D) occurs when a phage transfers bacterial DNA from one bacterium to another.