Which scientist(s) suggested for the first time
that the proportion of adenine and guanine
differs from one species to another?
a. Watson and Crick
b. Wilkins
c. Hershey and Chase
d. Chargaff
e. Franklin
D
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Why does the function of many receptor kinases depend on the fluid nature of the plasma membrane?
What will be an ideal response?
Enterotoxigenic and enteroinvasive are terms often linked to which of the following bacterial species?
a. E. coli b. S. enteritidis c. S. sonnei d. Yersinia pestis
Endosperm has allowed the angiosperms to become the most numerous and diverse plant group. What is the role of the endosperm?
A) It provides nutrition for the developing embryo, therefore increasing survival rates. B) It is the hard outer seed coat that protects the embryo. C) It ejects and disperses seeds after they mature. D) It is the ripened ovary tissue involved in seed dispersal and protection. E) It is a type of male gamete.
After the mature follicle releases the egg, the remaining follicle cells form the ________
Fill in the blank(s) with correct word