The nuclear lamina is an array of filaments on the inner side of the nuclear membrane. If a method were found that could cause the lamina to fall into disarray, what would you most likely expect to be the immediate consequence?
A) the loss of all nuclear function
B) the inability of the nucleus to divide during cell division
C) a change in the shape of the nucleus
D) failure of chromosomes to carry genetic information
E) inability of the ribosomes to produce proteins
Answer: C
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The chromoplast is an organelle associated with
A) oxidation of sugars. B) synthesis of secretory proteins. C) plant pigment storage. D) ribosome production in primitive plants. E) storage of chromium.
Which molecule is a common second messenger?
a. cGTP b. cATP c. PIP2 d. diacylglycerol e. Ras
All organisms use DNA as their genetic material. This type of support for evolution would be from the field of __________.
a) biogeography b) fossils c) anatomy and embryology d) molecular biology
Rice is a staple crop across Asia; it serves as a main nutritional source for Asia's high population. In the 1970s, a pathogen called the grassy-stunt virus greatly decreased cultivated rice plant populations in Asia. Scientists found one wild relative
of the rice plant in India that was resistant to the grassy-stunt virus, and today hybrid rice plants with that resistant gene are grown across Asia. To find this one rice plant species, approximately 17,000 rice plants samples were tested over the course of 4 years. If you were a scientist working on this project, how would you argue that the results of the research would be worth the time investment? A) Finding the wild relative with disease resistance would help avoid extirpation of fungus that has a mutualistic relationship with the cultivated rice plants. B) Finding the wild relative with disease resistance would protect the continent of Asia as a biodiversity hot spot. C) Finding the wild relative with disease resistance would allow Asian farmers to continue to grow the crop they know. D) Finding the wild relative with disease resistance would help deter invasive species of rice plants.