The protective layer outside of the plasma membrane of the plant cell is called ______

A. chitin
B. proteoglycans
C. pectin
D. the cell wall
E. cellulose


D. the cell wall

Biology & Microbiology

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Which yellow-pigmented organism exhibits gliding motility that grows best at 35°C and in conditions with increased carbon dioxide (CO2) but cannot grow in ambient air?

a. Actinobacillus b. Capnocytophaga c. Cardiobacterium d. Kingella

Biology & Microbiology

Which of the following events is least likely to result in a genetic change in a bacterium?  

A.  pilus formation B.  conjugation C.  specialized transduction D.  generalized transduction E.  natural transformation 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 horizontal gene transfer? 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?

Biology & Microbiology

Areas of the spinal cord appear glistening white because of

a. naked dendrites. b. cell bodies. c. neuroglia cells. d. lack of meninges. e. myelin sheaths.

Biology & Microbiology

Which statement describes an atom of oxygen?

A) Most naturally occurring atoms of oxygen contain 9 neutrons. B) All atoms of oxygen include 8 protons. C) Nitrogen-15 is an isotope of oxygen. D) Its atomic weight is the same as its atomic mass. E) Its chemical symbol is Ox.

Biology & Microbiology