Discuss three findings that support the theory of primary endosymbiosis
What will be an ideal response?
Answer: Possible answer topics could include any three of the following: antibiotics that disrupt the 70S ribosomes of Bacteria also disrupt protein synthesis in chloroplasts and mitochondria; chloroplast and mitochondrial ribosomes are 70S just as other prokaryotes; eukaryotic nuclei contain genes derived from Bacteria; hydrogenosomes are thought to be divergent mitochondria and they, too, contain genes found in Bacteria; mitochondria and chloroplasts contain DNA in the same form as bacteria (covalently closed circular DNA); and rRNA gene sequencing group chloroplasts and mitochondria with Bacteria.
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GCCCAAAG is a molecule of
A. RNA. B. DNA. C. protein. D. cannot tell as written.
Experiments that led to the understanding of cell cycle control were performed on yeast
a. True b. False
Which of the following is least likely to be a cause of
extinction? a. asteroid impact b. human activity c. adaptive radiation d. tectonic activity e. climate change
Convert 0.75 g to mg.
A. 75 B. 750 C. 7.5 D. 7500