Populations of all organisms change from one generation to the next because their DNA changes over
time. This is known as:
a. artificial selection.
b. biological evolution.
c. natural selection.
d. artificial selection and natural selection only
e. developmental selection.
B
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The cells wall of bacteria Z contains high concentrations of phospholipids along with proteins and relatively low amounts of lipopolysaccharide. When bacteria Z is gram stained, it will most like be colored?
A. Purple B. Pink C. Blue D. Clear, it does not retain any stain Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about gram staining? How does it relate to the question? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The _____ of a solution takes into account ALL of the solutes in the solution
Fill in the blank(s) with the appropriate word(s).
____, which are a cell type found in xylem, are extremely efficient in conducting water
a. Sieve tube elements b. Companion cells c. Tracheids d. Sclereids e. Vessel elements
An organism that ferments glucose via the mixed acid fermentation pathway will be:
red in the methyl red test red in the phenol red glucose red in the Voges-Proskauer test red in the nitrate reduction test