Small molecules of dna exist in bacteria as circular units. they contain few genes but are extremely important since they carry traits for drug resistance. these molecules are known as
a. chromosomes.
b. nucleoids.
c. plasmids.
d. nucleoli.
e. lysosomes

What were the main components of earth’s earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen

2. does the given statement describe a step in the transformation of the graph off(x) = x2 that would result in the graph of g(x) = -5x + 2)? a. the parent function is reflected across the x-axis. o yes nob. the parent function is stretched by a factor of 5. yes noonc. the parent function is translated 2 units up. o yes

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic