Cosmid cloning vectors accommodate much larger fragments of DNA than bacterial artificial chromosomes
__________________ Indicate whether the statement is true or false.
False - smaller
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When preparing a smear from a viscous and granular sample the microbiologist should:
a. add saline to the sample to thin out the specimen for smear preparation. b. place some of the material in an enrich-ment broth and then use the broth for smear preparation. c. use a sterile swab and roll it around in the material because it will be easier to roll the sample than to use a loop on the slide. d. if the material is not able to be distributed using a sterile loop or swab, use a squash or crush prep to spread out sample.
PBDEs are ____
a. permitted in many European countries but banned in the United States b. permitted in only one European country and in only 11 states in the United States c. banned worldwide but are still being used illegally d. banned in many European countries but permitted in most states in the United States e. banned in many Europeans countries and all states in the United States
Which one of the following statements regarding scientific theory is FALSE?
A) A scientific theory is a speculation as to the possible outcome of an experiment. B) A hypothesis that has been repeatedly tested over time, and found to be true, usually becomes a scientific theory. C) A scientific theory explains scientific facts with a high degree of reliability. D) As new information is gained over time, scientific theories can be modified. E) The highest status that a hypothesis can achieve is becoming a scientific theory.
Refer to the paragraph on crucian carp. Gills serve multiple functions in fish in addition to gas exchange
Given the large surface area of gills with lamellae, what is the most likely explanation for why crucian carp cover protruding lamellae in their gills when levels of oxygen are normal? A) to prevent loss of heat to the surrounding water B) to prevent loss of ions to the surrounding water C) to prevent protein loss to the surrounding water D) to prevent loss of oxygen to the surrounding water