Answer the following question given this paragraph: Q: The electron beam scans the surface of the sample, usually coated with a thin film of which metal? Choices: - platinum - silver - copper - gold A:
gold
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:
syncytium
Q: Answer the following question given this paragraph: Humidity is the amount of water vapor in the air. Relative humidity is the percent of water vapor in the air relative to the total amount the air can hold. The total amount depends on temperature. Q: What measurement is used to describe the amount of water vapor in the air? Choices: - precipitation - barometric pressure - heat - humidity A:
A: humidity
Question: Answer the following question given this paragraph: Science is a process for developing knowledge. Change in knowledge about the natural world is expected because there is often room for new observations which may challenge current views. No matter how well one theory explains a set of observations, it is possible that a different theory may explain them just as well or better, or may also encompass a wider range of observations. Scientists are always testing and attempting to improve theories. Scientists know that even if there is no way to gain complete knowledge about something, an increasingly accurate understanding of nature will develop over time. Q: What is the process for developing knowledge called? Choices: - evolution - theory - creationism - science A:
Answer: science
*Question*
Answer the following question given this paragraph: Fertilization of an egg cell by a sperm cell. In sexual reproduction, haploid gametes fuse to produce a diploid zygote. Q: What is produced when haploid gametes fuse in sexual reproduction? Choices: - deformity - cell cluster - isolated zygote - diploid zygote A:
**Answer**
diploid zygote
Answer the following question given this paragraph: An ionic bond is the force of attraction that holds together oppositely charged ions. Ionic bonds form crystals instead of molecules. Table salt contains ionic bonds. Q: What term means the force of attraction that holds together oppositely charged ions? Choices: - electron bond - magnetic bond - solvent bond - ionic bond A:
ionic bond