Which of the following differentiates marshes and swamps from bogs?
a. Marshes and swamps have no moving water.
b. Bogs are devoid of plant life.
c. Bogs have very little or no moving water.
d. Marshes and swamps have more insect life than bogs.
c. Bogs have very little or no moving water.
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Which of the following statements does not accurately describe the navigational ability of homing in birds?
A. Homing pigeons have map sense, which most likely includes landmarks as well as olfactory and visual cues. B. Homing pigeons use the sun and stars as well as the magnetic field to find their way "home" over long distances. C. If a homing pigeon is fitted with a magnetic helmet, it would not be able to find its way on a cloudy day. D. If a homing pigeon is fitted with a magnetic helmet, it would not be able to find its way on a cloudy day, but it would be able to navigate on a sunny day because it would still be able to use the sun as a compass. E. A biological clock used for time cues is not necessary for a homing pigeon to use the sun compass.
Which of the following statements is correct?
a. Intracellular digestion is seen in mammals. b. Intracellular digestion never involves choanocytes. c. Extracellular digestion must involve choanocytes. d. Extracellular digestion may take place in a tube contained inside the body. e. Most animals experience both intracellular and extracellular digestion.
Where are cell membrane components synthesized?
a. endoplasmic reticulum b. lysosomes c. Golgi apparatus d. vesicles e. nucleus
What role does RNAi play in formation of heterochromatin in yeast?
What will be an ideal response?