Seedless vascular plants, like ferns, require ________ for fertilization.
A. water
B. animals
C. wind
D. bees
E. All of the choices are correct.
Answer: A
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During apoptosis, caspases
A) activate enzymes that cut DNA into same-sized pieces. B) cause mitochondria to replicate their DNA. C) alter the cell surface so that viruses can more easily enter. D) remove introns from DNA.
How do scientists propose that coconuts traveled from tropical locales to Hawaii?
a. by air b. by birds c. by humans d. by wind
Which statement describes evidence in support of the endosymbiont theory?
A) The sequence of mitochondrial rRNA genes are most similar to the rRNA genes in purple bacteria. B) Mitochondrial and chloroplast DNA is organized into nucleosomes. C) Mitochondria and chloroplasts have genes that allow them to live independently. D) Mitochondria, chloroplasts, and cytoplasmic translation are inhibited by antibiotics such as chloramphenicol.
According to your text, the chemical that saves feedback information to the brain about the body's response to stress is _______.
A. serotonin B. cortisol C. dopamine D. adrenaline