Using 2 strains of pneumonia bacteria, Avery and his colleagues demostrated that the transforming factor in cells are

A. RNA

B. DNA

C. RNA polymerase

D. Phosphate groups

Individuals who live in locations with limited exposure to sunlight can have abnormal bone development due to an inability to absorb calcium and phosphate ions from the small intestine.

Which of the following is the correct definition of thermal energy? A. energy that is transmitted in the form of electromagnetic waves B. energy of an object due to the random motion of its atoms and molecules C.

Nancy's diet is deficient in iodine. This will affect the secretion of which hormone?

There is a giant sequoia (Sequoiadendron giganteum) named Washington (after George Washington) that was believed to be the second largest tree in the world (at 253.7 ft. in height!) until it was struck by lightning in 2003.

The respiratory system is one of the three systems that regulate acid-base balance in the body. how does it work to decrease an acidosis?

How many chromosomes do humans have? how many copies in normal cells? How many pairs? How many copies in sex cells?

How many times has blastopore fate changed over the course of evolution? -o times -1 time -2 times - multiple times

What is unique about the water near Antarctica? How does it drive global ocean circulation?

A physician examines a patient who complains of breathing problems. She finds fluctuations in the patient's blood pressure and heart rate. The physician thinks it's because of a brain injury. Which part of the brain is affected? A. Cerebellum B.

In natural selection what determines which color grey or green is advantageous