If a woman has a declining level of various hormones in her urine it may indicate ________
a. cancer
b. cardiovascular disease
c. diabetes
d. stroke
e. menopause
e
You might also like to view...
In the Hershey-Chase experiment, bacterial viruses, called phage, were used to demonstrate that DNA is the genetic material. The phage that were used for this experiment consisted of DNA surrounded by a protein coat. Phage will attach to specific types of bacteria and inject their DNA into the bacterial cell. To scientifically determine whether DNA is the genetic material, Hershey and Chase made
phage in a medium containing radioactive sulfur-35 (S35). Why was S35 used in this experiment? A. Only amino acids contain sulfur. B. Only nucleic acids contain sulfur. C. Both nucleic acids and amino acids contain sulfur. D. The radioactive sulfur labels peptide bonds.
How does a longer alimentary canal create an advantage in processing plant material?
A. Increased time of digestion allows for more processing. B. More volume means more food can be consumed. C. It creates positive feedback for decreased enzymatic activity.
All the members of a species that live within an ecosystem form a(n) ________
Fill in the blank(s) with correct word
Some of the earliest animals to successfully adapt to life on land were the:
A) arthropods. B) amphibians. C) trilobites. D) aquatic vertebrates.