The flagella of bacteria rotate at their bases like propellers
Indicate whether the statement is true or false.
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Which of the following is not true of water?
A. It is polar. B. It has a high heat of vaporization. C. It has cohesive properties. D. Its evaporation helps regulate body temperature. E. It is a relatively poor solvent.
In angiosperms, after fertilization, the triploid cell gives rise to:
a. a fertilized ovule b. a seed c. an embryo sporophyte d. endosperm e. a pollen grain
Which of the following is causing the decline
of amphibians worldwide?
a. loss of habitat b. increased UV light from climate change c. chemical pollutants d. pathogens e. all of these are causing the decline of amphibians worldwide
Which component is NOT found in a chloroplast?
a. a single outer membrane b. DNA c. ribosomes d. stroma e. thylakoids