A danger in using E. coli in cloning is that
A. E. coli could cause disease.
B. the human cells may reject the insertion.
C. the exons may invert the introns.
D.
the outer membrane is toxic to humans.
D
You might also like to view...
One of the reasons why the model systems of yeast, Arabidopsis, nematode worms, fruit flies, and mice are so often used to study functional analysis of genes is because
A. they all have only a few chromosomes. B. they are easy to cross with each other and observe polyploidy effects. C. they have short life cycles. D. they are easy to observe in the wild. E. they mutate easily leading to new genomic variations.
Which gas is increasing in the atmosphere and threatening the world with the greenhouse effect?
a. carbon dioxide b. carbon monoxide c. ozone d. fluorocarbon e. oxygen
Biological magnification can be defined as the:
a. concentration of a chemical in organisms increasing as the pollutant moves up a food chain b. energy transfer increasing as it moves up a food chain c. fixation of nutrients from the atmosphere d. entrance into the biological portion of a biogeochemical cycle e. increase in food web members in biologically diverse ecosystems
Refer to Figure 46-1. The structures receiving air in figure 1 are known as:
a. anterior air sacs. b. parabronchi. c. spiracles. d. alveoli. e. tracheae.