Q: The plasma membrane of a skeletal muscle fiber is called the what? Choices: - sheath - annulata - soleus - sarcolemma A:
sarcolemma

Q: What regulates the passage of blood into capillary beds? Choices: - bicellular sphincters - diocesan sphincters - cell membrane - precapillary sphincters A:
precapillary sphincters

Q: Q: Scientists measure the gases that escape from a volcano to predict what? Choices: - storms - floods - snowfall - eruptions A:
A: eruptions

Question: Q: How many membranes form the mitochondrion structure of a cell? Choices: - one - five - three - two A:
Answer: two

*Question*
Q: Mirrors and lenses are used in optical instruments to reflect and refract what? Choices: - gravity - mass - electricity - light A:
**Answer**
light

Q: Q: In the past, biologists grouped living organisms into five kingdoms: animals, plants, fungi, protists, and what? Choices: - trees - pathogens - lizards - bacteria A:
A: bacteria