Factors that help to limit growth of woody plants in temperate grasslands include
A) nutrient-poor soil and high insect diversity.
B) fires and grazing by large mammals.
C) large numbers of cacti and small numbers of grazing mammals.
D) mild winters and low annual precipitation.
Answer: B
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Which of the following contributes to asymmetric cell division in a developing embryo?
A. diffusible molecules secreted from one cell detected by another cell B. developing gradients of mRNA that define critical axes C. cell division occurring perpendicular to the mRNA gradient D. All of the choices are correct.
Tunde is worried that she has diabetes since a lot of her family has it. Which of the following blood findings would set her mind most at ease?
A) 400 mg/dl glucose B) 90 mg/dl glucose C) 30% Hb A1c hemoglobin D) 9% Hb A1c hemoglobin
A forest found in a broad belt in northern Eurasia and North America, with conifers and swamps, is called the
A. temperate deciduous forest. B. tundra. C. chaparral. D. tropical rain forest. E. taiga.
Gary and Stan are both about 6 ft tall and maintain a weight of 170 lb. Stan works at a desk and, for entertainment, watches a lot of movies. Gary also works at a desk and, for entertainment, plays on a soccer team. Who has a higher resting metabolism,
and why? A) Because they are the same height and weight, their resting metabolisms are the same. B) Stan, because his fat cells burn more calories C) We need to know more about their dietary habits. D) Gary, because his muscle cells burn more calories