life sciences
What will be an ideal response?
which study living things and include biology
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Which of the following statements about osmoconformers is false?
A. They do not have to adapt to the solute concentrations in the external environment. B. Their internal osmotic pressure matches that of the surrounding environment. C. They often actively regulate the concentrations of particular ions in their body fluids. D. They use less energy to regulate osmotic pressure than osmoregulators. E. Most marine invertebrates are osmoconformers.
Which statement best describes the difference between cell division in plant and animal cells?
a. Cytokinesis occurs by formation of a cleavage furrow in animal cells, but not plant cells. b. Cytokinesis occurs by formation of a cleavage furrow in plant cells, but not animal cells. c. Centrosomes play an important role in spindle formation in plant cells, but not in animal cells. d. Chromosome replication occurs during interphase in animal cells, while in plant cells, replication occurs when the nuclear envelope disintegrates. e. Animal cells divide via the cell cycle whereas plant cells divide by binary fission.
An organized group of specialized cells is called a(n) organ
Indicate whether the statement is true or false.
Which event occurs during the luteal phase of the menstrual cycle?
A. The corpus luteum forms. B. A zona pellucida forms around the oocyte. C. An oocyte completes meiosis I. D. Estrogen levels increase. E. Testosterone levels increase.