Viroids
a. are more complex than viruses
b. have large DNA genomes
c. encode their own polymerase for nucleic acid replication
d. cause diseases in plants
e. infect animal cells
D
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Sea otter populations were reduced by overhunting, allowing an overgrowth of one of their prey
animals, the ____, which consumed populations of ____ and decimated them.
a. crabs; shrimp b. abalone; algae c. sea urchin; kelp d. harbor seals; fish e. crab; kelp
Matching. Choose the one most appropriate response
for each. 1. ___ microtubules 2. ___ chloroplasts 3. ___ Golgi bodies 4. ___ DNA molecules 5. ___ RNA molecules 6. ___ central vacuoles 7. ___ lysosomes 8. ___ mitochondria 9. ___ nucleoli 10. ___ ribosomes A. contain enzymes for intracellular digestion B. are primary cellular organelles where proteins are assembled C. package cellular secretions for export D. extract energy stored in carbohydrates; synthesize ATP; produce water and carbon dioxide E. synthesize subunits that will be assembled into two-part ribosomes in the cytoplasm F. transcribe, translate hereditary instructions into specific proteins G. store substances H. encode hereditary information I. help distribute chromosomes to the new cells during cell division J. convert light energy to chemical energy stored in the chemical bonds of glucose or starch
Compare and contrast the processes of pollination and fertilization. What will be an ideal response?
What description applies to accessory organs?
A) They aren't included in organ systems. B) They secrete enzymes required for digestion. C) They don't contain connective tissue. D) They assist other organs in the circulatory system.