Which of the following facts supports the claim that mitochondria developed from bacteria that were long ago phagocytosed into eukaryotic cells?
a. Mitochondria have their own DNA.
b. Mitochondria are the "powerhouses" of the cell.
c. Mitochondria have proteins for the synthesis of ATP.
d. Mitochondria have flagella for motion.
e. Mitochondria are small and easily transported across the membrane.
Ans: a. Mitochondria have their own DNA.
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a. vaccines b. defense proteins c. antibodies d. antibiotics e. lymphocytes
What are telomeres?
a. “junk DNA” present throughout the length of our chromosomes b. protein caps found on the ends of chromosomes c. regions of DNA at the end of chromosomes which do not code for making proteins d. DNA sequences which code for making proteins that regulate cell division
Which of the following is the most likely explanation for the modern-day distribution of dicynodont fossils? The dicynodonts were_____
A) carnivores that traveled widely to find prey B) evenly distributed throughout all of Pangaea C) most abundantly distributed throughout Gondwanaland D) amphibious and able to swim long distances
Most known plant viruses are RNA viruses.
Answer the following statement true (T) or false (F)