The biologist Donald Perry discovered that rainforest birds interact in what way with the Norantea
sessilis vine?
a. Birds nest within the shelter of the thorny vine, which repels predators.
b. Birds feed on the fruits of the vine, distributing the seeds around the forest in their
droppings.
c. Birds appear to be overfeeding on the vine's succulent fruits, probably limiting the plant's
chances of long-term survival.
d. Birds that feed on the nectar of the flowers inadvertently transfer pollen from one vine to
another on their feet.
e. Birds that feed on the nectar of the flowers inadvertently transfer pollen from one vine to
another on their beaks.
D
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Explain the translational attenuation mechanism
What will be an ideal response?
Answer the following statements true (T) or false (F)
1. A person whose ancestors were cattle herders is more likely to express the lactase gene as an adult. 2. All sugars are absorbed via secondary active transport. 3. In omnivores, including humans, the cecum is an important organ for digestion of cellulose. 4. Fat absorbed by the small intestine enters the lymphatic system.
The spindle attaches to chromosomes at the _____
a. centriole b. contractile ring c. centromere d. centrosome e. telomere
Which of the following events is not associated with the development of the female gametophyte?
A. A single parenchyma cell will enlarge to become a megaspore mother cell. B. The female gametophyte will contain three antipodal cells. C. The nucleus of the megaspore divides mitotically to produce eight nuclei. D. The megaspore undergoes meiosis producing four haploid megaspores. E. All of these are associated with the development of the female gametophyte.