Ehrlichiosis is transmitted by ticks. This is an example of __________.
A) airborne transmission
B) indirect contact transmission
C) vehicle transmission
D) vector transmission
Ans: D) vector transmission
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Before plowing a field, a farmer thought the bare field looked weed-free. Three days after plowing and turning over the soil, he was amazed to see thousands of tiny seedlings. What is the most likely reason for the mass germination of seeds?
A) large seeds that needed soil disturbance to germinate B) small seeds that need light to germinate C) small seeds that were scarified by exposure to plow D) large seeds that needed exposure to higher levels of oxygen to germinate
The relationship between DNA and chromosomes is most like
a. an egg yolk inside of an egg. b. a spoon cradling some peas c. thread wrapped around a spool d. the candy shell surrounding the chocolate in a piece of M&M candy.
Prokaryotes and eukaryotes show differences in posttranscriptional modifications of mRNA. What are these differences, and why do eukaryotes show more modifications than prokaryotes?
What will be an ideal response?
Snake behavior in Wisconsin changes throughout the year. For example, a snake is _____
A) less active in winter because the food supply is decreased B) less active in winter because it does not need to avoid predators C) more active in summer because that is the period for mating D) more active in summer because it can gain body heat by conduction