Sugars are loaded into sieve tubes via simple diffusion. Indicate whether the statement is true or false
False - active transport
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____________________, such as ulcerative colitis and Crohn disease, develop when bacteria are able to breach the barrier between the digestive system and the body
Fill in the blank(s) with correct word
A protein is 300 amino acids long. Which of the following could be the number of nucleotides in the section of DNA that codes for this protein? (Remember: DNA is double-stranded.)
A) 100 B) 1800 C) 300 D) 500 E) 3
The most immediate potential benefits of introducing genetically modified crops include _____
I) creating crops that can grow on land previously unsuitable for agriculture II) creating crops with better potential for biofuel production III) creating crops with better nutritional attributes IV) increasing crop yield V) decreasing the mutation rate of certain genes A) only II, III, and IV B) only I, II, III, and IV C) only III, IV, and V D) I, II, III, IV, and V
A Type I survivorship curve is ___________
A. convex, such as that of humans B. diagonal, such as that of lizards, small mammals, and large birds C. concave, such as marine animals that release eggs D. S-shaped, such as that of small birds E. logarithmic, such as that of weeds