Members of the phylum __________ are the simplest organisms that have a separate mouth and anus
A. Platyhelminthes
B. Ctenophora
C. Cnidaria
D. Porifera
E. Placozoa
B
You might also like to view...
Your thigh bone, the largest bone in your body, is called the ________.
A. tibia B. fibula C. femur D. pelvis
Antiviral drugs are often difficult to develop, largely because
A. viruses are more abundant in the body than bacterial cells. B. viruses are obligate intracellular parasites so the drugs must enter the host cell and often cause toxic side effects in order to destroy the virus. C. viruses are more pathogenic than bacterial cells. D. viruses are much smaller than bacterial cells.
Which piece of evidence best supports the endosymbiotic theory of organelle evolution?
A. Mitochondria and chloroplasts both contain DNA and some can make their own proteins. B. Mitochondria and chloroplasts divide by binary fission. C. The outer membrane of chloroplasts and mitochondria resembles that of a eukaryotic cell while the inner membrane resembles that of a bacterial cell. D. Mitochondria and chloroplasts are the same size as bacteria. E. All of these are correct.
Which is the only trimester to include both the embryo and fetal stages?
What will be an ideal response?