Which enzyme did I use if I cut a DNA fragment and ended up with a double stranded sequence that
looks like this:AATTC---------GG---------CTTAA
a. Eco RI
b. Hind III
c. Bam HI
d. Cla I
e. Pvu I
A
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J. A. Milburn and R. P. C. Johnson developed an acoustic method for detecting cavitation in plants. This involves "listening" for characteristic clicks produced during air-bubble formation, using sensitive microphones and amplifiers
In one experiment with the castor bean plant (Ricinus communis), they detached leaves by cutting the petioles and subjected them to various treatments. Which of the following would be LEAST likely to be observed in such an experiment? A) as the leaf is allowed to wilt, recording many clicks that approximately equal the estimated number of vessel elements in the cut petiole B) after increasing transpiration by blowing warm air across the leaf, recording an increased rate of clicking C) after adding water to the cut end of the petiole, recording an increased rate of clicking
Four of the five answers listed below are relationships in which at least one of the interacting organisms benefits. Select the exception
a. competition b. parasitism c. mutualism d. commensalism e. predation
Which of the following is not made from long chains of glucose?
A) Starch B) Monosaccharides C) Glycogen D) Cellulose
In what part of the nucleus does ribosomal RNA production occur?
A) within nuclear pores B) in the chromatin C) in the area of the nucleolus D) Ribosomal RNA production does not occur in the nucleus.