Throughout the day, a sunflower head turns to face the progress of the sun through the sky. What property of life does this represent?
a. growth and development
b. response to stimuli
c. order
Ans: b. response to stimuli
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Which of the following are most likely to have teeth adapted for grinding and/or tearing?
A) suspension feeders B) mass feeders C) deposit feeders D) fluid feeders
Which of the following nutrient types enters lacteals following digestion?
A. carbohydrates B. proteins C. nucleic acids D. vitamin C E. lipids
Human embryonic stem cells that are used in research are
A) cultured in the bodies of human embryos from outer cell mass cells. B) cultured in laboratory dishes from inner cell mass cells taken from a very early embryo. C) taken from aborted human fetuses between 10 and 12 weeks of gestation. D) taken from stillbirths that do not have genetic diseases.
What is 'Quorum Sensing'?
A. The phenomenon whereby the accumulation of signaling molecules enable a single bacterial cell to sense the number of bacteria (cell dentistry) B. The phenomenon whereby the accumulation of signaling molecules enable a single macrophage to sense the number of bacteria (cell dentistry) C. The phenomenon whereby the accumulation of signaling molecules enable a single B lymphocyte to sense the number of bacteria (cell dentistry) D. The phenomenon whereby the accumulation of signaling molecules enable a single Helper T lymphocyte to sense the number of bacteria (cell dentistry) E. The phenomenon whereby the accumulation of signaling molecules enable a single Neutrophil to sense the number of bacteria (cell dentistry)