Explain why phocids, especially ones living in polar areas, generally have very short lactation periods compared to eared seals
What will be an ideal response?
Many phocids live in polar waters, where the ice floes tend to break and crack. As a result the mothers want to ensure that the young develop as quickly as possible in order for them to enter the water as soon as possible. Another reason is that the mothers cannot sustain extended periods of lactation because they could eventually lose too much body fat.
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Which of the following white blood cells
mature in the thymus?
a. B cells b. T cells c. dendritic cells d. neutrophils e. more than one of these white blood cells matures in the thymus
During photosynthesis plants make glucose (C6H12O6) from CO2 and water using light. This is an example of:
a. endothermic reaction b. endergonic reaction c. a decrease in entropy d. non-spontaneous reaction e. all the above
Which receptor is involved in detecting changes in body position?
a. Pacinian corpuscle b. free nerve endings c. muscle spindle d. Merkel’s discs e. Meissner’s corpuscle
Unlike Mitosis, Meiosis produces daughter cells could be genetically different from each other. Which mechanism(s) are responsible for this outcome?
A. DNA Recombination B. Chromatid Separation C. Independent Assortment D. Both A and B E. Both B and C F. Both A and C