What do all protists possess?
a. cell walls
b. multiple, circular chromosomes
c. chloroplasts
d. microtubules and microfilaments
Ans: d. microtubules and microfilaments
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If you forgot to heat fix a smear before doing a Gram stain, which of the following might occur?
A. Gram-positive and Gram-negative bacteria would both stain purple. B. The stains would not adhere to the bacteria. C. The decolorization step of the Gram stain would not work properly. D. The smear may not adhere to the slide.
Which of the following sequences is correct?
a. receptors >>> sensory neurons >>> motor neurons >>> interneurons b. sensory neurons >>> receptors >>> motor neurons c. motor neurons >>> integrators >>> sensory neurons d. receptors >>> motor neurons >>> interneurons >>> sensory neurons e. sensory neurons >>> interneurons >>> motor neurons
Which type of RNA interacts with nuclear proteins to form a ribonucleoprotein complex responsible for intron removal?
What will be an ideal response?
The resolution of a microscope is a function of the ________ of the lenses and the ________ of light
A) curvature, color B) curvature, wavelength C) numerical aperture, wavelength D) numerical aperture, intensity E) convex shape, intensity