Which of the following statements about the
electromagnetic spectrum is true?
a. Infrared energy is sufficient to produce
ionization.
b. Infrared radiation has more energy than red
radiation.
c. Visible light has more energy than ultraviolet
radiation.
d. Chlorophyll absorbs some visible wavelengths,
but not all.
e. Chloroplasts absorb all wavelengths of visible
light equally.
Answer: d
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Why do skates and rays have flattened bodies, while sharks are torpedo shaped?
A) Sharks have a strong cartilaginous skeleton that helps them maintain a tubular shape, while skates and rays lack such a skeleton. B) Sharks are more closely related to the tubelike lampreys than skates and rays are. C) Skates and rays need enlarged pectoral fins to help them stay level in turbulent water, while sharks do not. D) Skates and rays exchange gases across their skin and thus require a high surface-area-to-volume ratio, while sharks use gills to respire. E) Sharks are streamlined for active swimming off the bottom, while skates move about mostly on the ocean bed.
Which of the following would not be characteristic of the forelimbs of an animal specialized for digging?
A. Limb movements are rapid. B. Limbs are short for their size. C. Limbs have large r compared to L. D. Much of the weight is in the foot. E. All of the answer options are characteristic of digging animals.
Which of the following cell types would be associated with the greatest concentration of low-density lipoproteins (LDLs)?
A) skin B) muscle C) connective tissue D) blood E) liver
When an electron moves from the outer shell of one element to the outer shell of another element, a(n) ________ bond has been created
Fill in the blank(s) with correct word