*Question*
Q: The part of the shadow in which light is completely blocked is called what? Choices: - penumbra - eclipse - corona - umbra A:
**Answer**
umbra

*Question*
Q: As blood glucose levels rise what is released from the pancreas? Choices: - adrenaline - estrogen - hemoglobin - insulin A:
**Answer**
insulin

*Question*
Q: What biochemicals mediate changes in target cells by binding to specific receptors? Choices: - amino acids - acids - enzymes - hormones A:
**Answer**
hormones

*Question*
Q: The e. coli chromosome, like many other bacterial chromosomes, is what shape? Choices: - oval - square - triangular - circular A:
**Answer**
circular