Hepatitis A does not cause chronic liver disease, and complete recovery occurs 99% of the time.
Answer the following statement true (T) or false (F)
True
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When you compare Australian marsupials to placental mammals today
Marsupials are a very ancestral form of mammal, evolving before placental mammals over 70 million years ago. Today Australian marsupials can be compared to placental mammals on other continents.
A. the marsupials are all very primitive, having changed very little during the last 70 million years.
B. the marsupials are very similar to placental mammals in the ways they have adapted to similar ecological niches.
C. the marsupials have evolved much more rapidly than placental mammals and are more highly adapted.
D. the marsupial fossils look remarkably similar to the placental mammals of today.
E. living marsupials are little changed from the earliest marsupial fossil forms.
Atrioventricular valves separate:
A. the left atrium from the left ventricle and the right atrium from the right ventricle. B. the right atrium from the right ventricle. C. the left atrium from the left ventricle. D. the right and left ventricles. E. the aorta from the left ventricle.
Plants having the ability to take up organic nitrogen are most likely to be found in the ____
a. arctic tundra b. salt marsh c. tropical forest d. grassland e. temperate forest
Biochemically, a gene is BEST defined as a
a. unit of heredity. b. part of a chromosome. c. region of DNA that codes for protein assembly. d. portion of the nuclear chromatin. e. part of the material located in the nucleus.