Explain 2 functions of the bright coloration of some coral reef dwellers
What will be an ideal response?
First and foremost, bright coloration plays an important role in camouflaging coral reef organisms from their predators or their prey during daylight hours. Since the reef is a very colorful place, it makes sense that animals living in these areas would also be very colorful to blend in. In addition, bright coloration can also be a warning signal to potential predators of the dangerous or toxic nature of the color bearing animal. Rather than wait for predators to take a bite out of these animals to discover their toxicity, they "tell" their would-be predators that they are dangerous beforehand.
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Which group of genes in Drosophila embryos must be mutated if the result is elimination of a significantly sized, contiguous region of segmentation?
What will be an ideal response?
Some hemicellulose will contain ____,which consists of a backbone of รข-1, 4-glucose molecules to which side chains
of five-carbon sugar are attached. a. cellulose b. xyloglucan c. lignin d. ?-galacturonic acid e. pectin
Which of the following is a way in which bacteria help the environment?
A) They are used to water in sewage treatment facilities. B) They break down dead organisms in the soil and recycle nutrients. C) They remove pollutants from the environment. D) All of the above are ways in which bacteria help the environment.
Which of the following results in characteristic of mycoplasma spp. colony culture?
A. Alpha-hemolysis on blood agar B. Beta-Hemolysis on blood agar C. Double zone of hydrolysis on egg-yolk lecithin D. Fried egg colonies on agar E. Growth on chocolate agar