Studies by Avery, MacLeod, and McCarty with different strains of bacteria and those by Hershey and Chase with T2 bacteriophage determined that proteins are highly complex molecules that form the genetic material for bacteria and viruses.
Answer the following statement true (T) or false (F)
False
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The first law of thermodynamics states:
A. that energy is constantly being created by entropy events B. that energy can be used and then destroyed because of entropy's actions on it C. that energy can be changed from one form to another, but cannot be created or destroyed D. that energy can be destroyed while it is producing entropy
The process by which cells become specialized is called _____.
A) differetitation b) totipotency c) cloning d) deseperation
Hemophilia is a sex-linked recessive condition that results in deficient blood clotting. The disease causes excessive bleeding which occurs spontaneously or upon slight injury. In dogs (as in humans) hemophilia is caused by a defect in a gene on the X chromosome. What will be the results of mating between a normal, noncarrier female dog and a male dog with hemophilia?
A. Half the male offspring will be normal and half will have hemophilia; all females will be carriers. B. All the female offspring will be normal and all male offspring will be carriers. C. All of the offspring will be normal, but all females will be carriers. D. All female offspring will be normal and half the male offspring will have hemophilia. E. Half the female offspring will have hemophilia and half will be carriers, all male offspring will be normal.
Which of the following statements is TRUE?
a) once a person reaches maturity, cell division stops unless it is to repair a wound
b) cell division in an adult signifies cancer
c) some specific cells throughout the body retain the ability to divide & replace themselves
d) growth continues on throughout life of an adult human