With Clostridium perfringens, the enterotoxin is present in the endospores that germinate under anoxic conditions
Indicate whether the statement is true or false.
Answer: FALSE
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A type of transport of a solute across a membrane, up its concentration gradient, using protein carriers driven by the expenditure of chemical energy is known as
A. osmosis. B. diffusion. C. facilitated transport. D. active transport. E. exocytosis.
Why do you think four sperm cells are produced as a result of gametogenesis but only one ovum is produced?
What will be an ideal response?
The transforming principle described by Griffith in his work with Streptococcus pneumoniae is ____
a. a polysaccharide capsule b. a phospholipid c. protein d. RNA e. DNA
Which genes encode proteins that regulate the cell cycle in normal cells?
a. tumor suppressor genes b. proto-oncogenes c. oncogenes d. tumor suppressor genes and proto-oncogenes e. tumor suppressor genes, proto-oncogenes, and oncogenes