Answer the following question given this paragraph: Cardiac muscle is found only in the walls of the heart. It is striated, or striped, because its muscle fibers are arranged in bundles. Contractions of cardiac muscle are involuntary. This means that they are not under conscious control. When cardiac muscle contracts, the heart beats and pumps blood. Q: When cardiac muscle contracts, the heart does what? Choices: - cardiac arrest - irregular heartbeat - heart murmur - pumps blood A:
pumps blood
Answer the following question given this paragraph: Immunity can be acquired in an active or passive way, and it can be natural or artificial. Watch this video (http://openstaxcollege. org/l/immunity) to see an animated discussion of passive and active immunity. What is an example of natural immunity acquired passively?. Q: What bodily defense can be acquired in an active or passive way, and can be natural or artificial? Choices: - skin - membrane - nerves - immunity A:
immunity
Q: Answer the following question given this paragraph: Metamorphism does not cause a rock to melt completely. It only causes the minerals to change by heat or pressure. If the rock melts completely, it will cool to become an igneous rock. Q: What changes from heat or pressure during metamorphism? Choices: - carbohydrates - grains - fossils - minerals A:
A: minerals
Question: Answer the following question given this paragraph: Protists are the simplest eukaryotes. They are easiest to define by what they are not. Protists are not animals, plants, or fungi. Q: Protists are the simplest of what? Choices: - prokaryotes - plants - fungi - eukaryotes A:
Answer: eukaryotes
*Question*
Answer the following question given this paragraph: synostoses and fusing the bony components together into the single hip bone of the adult. Similarly, synostoses unite the sacral vertebrae that fuse together to form the adult sacrum. Q: Synostoses unite the sacral vertebrae that fuse together to form the what? Choices: - young sacrum - lower sacrum - permanent sacrum - adult sacrum A:
**Answer**
adult sacrum
Answer the following question given this paragraph: Q: What does the armor including spines in some species offer? Choices: - nutrition - protection from cold - energy - protection from predators A:
protection from predators