Photoheterotrophs are best described as organisms that obtain energy to make ATP

A) from organic compounds but use sunlight to produce carbon sources.
B) and organic compounds from sunlight.
C) from sunlight but cannot make organic compounds from CO2.
D) from some forms of chemicals.
E) from organic compounds.


C) from sunlight but cannot make organic compounds from CO2.

Biology & Microbiology

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A double stranded DNA strand contains 26 pyrimidines. How many purines will the copied strand contain?

A. 0 B. 13 C. 26 D. 52

Biology & Microbiology

Nucleosomes are best described as:

a. eukaryotic DNA associated with histone proteins. b. prokaryotic DNA associated with nonhistone proteins. c. eukaryotic DNA associated with nonhistone proteins. d. prokaryotic DNA associated with histone proteins. e. eukaryotic DNA associated with scaffolding proteins.

Biology & Microbiology

All of the following characteristics describe glycoproteins EXCEPT ____

a. Glycoproteins provide support and protection. b. Glycoproteins are the main component of the extracellular matrix. c. Glycoproteins include collagen and fibronectins d. Glycoproteins are produced only on free ribosomes in the cytoplasm. e. Glycoproteins are found in tendons, cartilage, and bone.

Biology & Microbiology

__________ neurons detect stimuli. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology