Which biome has a layered structure that will
contain many vines and epiphytes?
a. chaparral
b. tundra
c. estuary
d. taiga
e. tropical rainforest
E
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Answer the following statements true (T) or false (F)
1.Cells that produce fine fibers of collagen in cartilage are osteocytes. 2.Damage to the myelin sheath of a neuron may slow or even stop nerve impulse transmission. 3.Cancer is a disease that affects the cell cycle. 4.Homeostasis is the state of internal constancy maintained by living organisms. 5.Positive feedback is the most common way that living organisms maintain homeostasis.
Assume the trait for brown eyes is completely dominant to blue eyes and this trait is controlled by a single gene. If 400
people in a population of 10,000 have blue eyes, how many people would be expected to be heterozygous for this trait? (Hint: Use the Hardy-Weinberg formula.) a. 8,000 b. 5,400 c. 3,200 d. 960 e. 320
What tool or technique used by Ivanowski and Beijerinck while studying diseased tobacco plants enabled them to determine that the disease was caused by an agent significantly smaller than bacteria?
A. transmission electron microscopy that allowed them to view the tobacco mosaic virus B. porcelain filters that trapped bacteria but allowed passage of the virus C. cell culture that enabled cultivation of the virus D. scanning electron microscopy that enabled them to view the virus the tobacco mosaic virus
Predict why a box jelly can eat fish while a sponge can only consume bacteria and other microscopic organic matter?
A. Box jellies use intracellular digestion. B. Sponges are too small to consume large prey items. C. Sponges lack venom in their stinging cells. D. Box jellies start digestion in their gastrovascular cavity.