Answer:
Only the extracts from heat-killed cells treated with RNase are unable to transform nonvirulent bacteria into virulent bacteria.
Explanation:
The experiment by Avery, McCarty and MacLeod aimed to identify Griffith's "transforming principle," which is a principle that explains how transformation is a way of recombining, exchanging, or transferring genetic information between organisms or from one organism to another. For this, they used cell that were heat inactivated and purified the transforming principle of these cells.
The purified cells did not give positive results in the tests done by the scientists, but they presented transformants very similar to the DNA. However, Avery suspected that the result should be reinterpreted and that the molecule was not a DNA. This is because RNA degrading enzymes had no effect on the transforming principle and only RNase-treated heat-killed cell extracts are unable to transform non-virulent bacteria into virulent bacteria.
Answer:
Rostral
Explanation:
according to google rostral means: situated or occurring near the front end of the body, especially in the region of the nose and mouth or (in an embryo) near the hypophyseal region
Answer.
b). False.
Explanation.
Kidneys are responsible for urine formation that helps in removal of waste materials from the body. Urine formation involves three steps, filtration, reabsorption, and secretion.
During filtration, kidneys filter blood and collect water, glucose, amino acids, urea, and various slats and ions. Proteins and red blood cells are not filtered by the process of filtration. As glucose is important for body, it is reabsorbed by the body along with some other substances. Hence, red blood cells, proteins, and glucose are not secreted into the filtrate.
Thus, the given statement is 'false.'
When the client vacuums her floors for 20 min, the minimum amount of caloric energy she burns is 80 calories. It depends on the weight of the person.
<h3>What is calorie burning?</h3>
The term calorie-burning refers to the calorie requirement for a given activity (either physical or mental activity).
Calorie burning largely depends on the physiological features of the individual and the time spend to carry out the activity.
For example, an activity of 20 minutes that requires 80 calories is due to the use of 4 cal per minute.
Learn more about calorie burning here:
brainly.com/question/14340050
Answer:
12 years of school, four years of college and four years of medical school.
The first year of training after medical school is called an internship, or more commonly it is called first year of residency or PGY-1 (Post-Graduate Year-1). The following years are called PGY-2, PGY-3, etc. The training that is done after a residency (in a subspecialty) is usually called a fellowship. Much of what you will learn in your chosen specialty will be learned in your residency.
