Humus often enhances the water and nutrient-retaining properties of topsoil. Which of the following might increase the humus content of a soil? Check all that apply.
A. phosphate fertilizer
B. ground limestone
C. leaf litter
D. fish meal
E. mushroom compost
Answer: E
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Which of these is not an organic molecule?
a. carbohydrate b. minerals c. proteins d. glucose e. lipids
__________ are fleshy, scaly stems that typically
grow under the soil and parallel to its surface. a. Stolons b. Rhizomes c. Bulbs d. Corms e. Tubers
Silencing of selected genes is often done using RNA interference (RNAi). Which of the following questions would NOT be answered with this process?
A) What is the function of gene 432 in a particular species of annelid? B) What will happen in a particular insect's digestion if gene 173 is not able to be translated? C) Is gene HA292 expressed in individuals for a disorder in humans? D) Will the disabling of this gene in Drosophila and in a mouse cause similar results?
The toxin production by Corynebacterium diphtheriae carrying a temperate phage is an example of __________.
a. phage conversion b. general transduction c. specialized transduction d. phage lysis