Suppose a tree possesses abundant chlorophyll a pigments. Why would it benefit from also producing other types of pigments?
What will be an ideal response?
Pigments each capture a specific range of light wavelengths. By having more than one type of pigment, the tree's leaves can optimize the chemical energy obtained from photosynthesis since they have pigments that can absorb light from multiple wavelengths. Accessory pigments have other functions as well, such as antioxidant capacities.
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Consider mumps. What is the causative agent? How is this disease spread? What happens in the body during the course of this disease? What type of immunity is conferred or used for this disease?
Why is the prevalence of mumps in developed countries generally low? What will be an ideal response?
The ________ cells in a multicelled organism will contain pairs of chromosomes which are not used for sexual reproduction. a. reproductive b. None of these choices
c. germ d. sex e. somatic
Which of the following is not part of the upper respiratory tract?
A. Trachea B. Mouth C. Pharynx D. Nasal cavity E. Larynx
What is the function of the nucleolus?
A. It is the site of protein synthesis. B. It isolates particular chemical activities from the rest of the cell. C. It packages proteins for export from the cell. D. It is the site of ribosome subunit assembly. E. It is the site of photosynthesis.