STRAIGHTERLINE BIO 250 EXAM 1 QUESTIONS WITH 100% VERIFIED SOLUTIONS (GRADED A+)

STRAIGHTERLINE BIO250 EXAM 1



QUESTIONS WITH 100% VERIFIED SOLUTIONS



(GRADED A+)



Question 1

Which of the following does not indicate microbe involvement in energy and nutrient flow?

Select one:

a. Thermal hot springs warmed by heat from earth's interior

b. Formation of greenhouse gases, CO2 and methane

c. Digestion of complex carbohydrates in animal diets

d. Decomposition of dead matter and wastes

Question 2

Characteristics shared by all cells include

Select one:

a. a membrane serving as a cell boundary.

b. the possession of genetic information.

c. the presence of cellular fluid.

d. All of the choices are correct

Question 3

A nutrient medium that has all of its chemical components identified and their precise

concentrations known and reproducible is termed ______.

Select one:

a. complex

, b. reducing

c. enriched

d. defined

Question 4

All of the following pertain to the atom Carbon-14 except it

Select one:

a. has 6 protons.

b. has 6 electrons.

c. has 14 neutrons.

d. is an isotope of carbon.

Question 5

All of the following pertain to the fluorescence microscope except

Select one:

a. it uses electrons to produce a specimen image.

b. it is a type of compound microscope.

c. it requires the use of dyes like acridine or fluorescein.

d. it is used to diagnose certain infections.

e. it requires an ultraviolet radiation source.

Question 6

The microbiological term for the sample of specimen that is put into a nutrient medium to

produce a culture is ______.

Select one:

a. colony

b. inoculum

c. streak