Answer the following question given this paragraph: Sometimes cancer cells break away from a tumor. If they enter the bloodstream, they are carried throughout the body. Then, the cells may start growing in other tissues. This is usually how cancer spreads from one part of the body to another. Once this happens, cancer is very hard to stop or control. Q: How do cancer cells typically spread from one part of the body to another? Choices: - plasma - kidneys - liver - bloodstream A:
bloodstream
Answer the following question given this paragraph: Visible light is part of the electromagnetic spectrum. Q: Visible light is part of what spectrum? Choices: - mechanical spectrum - eclipse spectrum - molecular spectrum - electromagnetic spectrum A:
electromagnetic spectrum
Q: Answer the following question given this paragraph: Four electron groups orient themselves in the shape of a tetrahedron. Q: Four electron groups orient themselves into what shape that has four faces? Choices: - spherical - multicellular - circular - tetrahedron A:
A: tetrahedron
Question: Answer the following question given this paragraph: Q: What makes a complete orbit around the earth once every 29 1/2 days? Choices: - Mars - the Sun - Gemini - the moon A:
Answer: the moon
*Question*
Answer the following question given this paragraph: 10.7 Cardiac Muscle Tissue Cardiac muscle is striated muscle that is present only in the heart. Cardiac muscle fibers have a single nucleus, are branched, and joined to one another by intercalated discs that contain gap junctions for depolarization between cells and desmosomes to hold the fibers together when the heart contracts. Contraction in each cardiac muscle fiber is triggered by Ca++ ions in a similar manner as skeletal muscle, but here the Ca++ ions come from SR and through voltage-gated calcium channels in the sarcolemma. Pacemaker cells stimulate the spontaneous contraction of cardiac muscle as a functional unit, called a syncytium. Q: Pacemaker cells stimulate the spontaneous contraction of cardiac muscle as a functional unit, called a what? Choices: - coenocyte - tapetum - adipocytes - syncytium A:
**Answer**
syncytium
*Question*
Answer the following question given this paragraph: There are two major types of seismic waves. Body waves travel through the Earth's interior. Surface waves travel along the ground surface. In an earthquake, body waves are responsible for the sharp jolts. Surface waves are responsible for the rolling motions that do most of the damage in an earthquake. Q: What are the rolling motions during an earthquake called? Choices: - tidal waves - seismic thrusts - velocity waves - surface waves A:
**Answer**
surface waves