Answer the following question given this paragraph: The challenge of techniques used for proteomic analyses is the difficulty in detecting small quantities of proteins. Although mass spectrometry is good for detecting small amounts of proteins, variations in protein expression in diseased states can be difficult to discern. Proteins are naturally unstable molecules, which makes proteomic analysis much more difficult than genomic analysis. Q: The challenge of techniques used for proteomic analyses is the difficulty in detecting small quantities of what? Choices: - bacteria - acids - particles - proteins A:
proteins
Answer the following question given this paragraph: Defecating, urination, and even childbirth involve cooperation between the diaphragm and abdominal muscles (this cooperation is referred to as the "Valsalva maneuver"). You hold your breath by a steady contraction of the diaphragm; this stabilizes the volume and pressure of the peritoneal cavity. When the abdominal muscles contract, the pressure cannot push the diaphragm up, so it increases pressure on the intestinal tract (defecation), urinary tract (urination), or reproductive tract (childbirth). The inferior surface of the pericardial sac and the inferior surfaces of the pleural membranes (parietal pleura) fuse onto the central tendon of the diaphragm. To the sides of the tendon are the skeletal muscle portions of the diaphragm, which insert into the tendon while having a number of origins including the xiphoid process of the sternum anteriorly, the inferior six ribs and their cartilages laterally, and the lumbar vertebrae and 12th ribs posteriorly. The diaphragm also includes three openings for the passage of structures between the thorax and the abdomen. The inferior vena cava passes through the caval opening, and the esophagus and attached nerves pass through the esophageal hiatus. The aorta, thoracic duct, and azygous vein pass through the aortic hiatus of the posterior diaphragm. Q: Defecating, urination, and even childbirth involve cooperation between the diaphragm and these? Choices: - heart muscles - skeletal muscles - lung muscles - abdominal muscles A:
abdominal muscles
Q: Answer the following question given this paragraph: The shore may have a lot of sediment washed from land or eroded from cliffs. The sediment is transported by currents. Q: How is sediment transported? Choices: - storms - landslides - winds - currents A:
A: currents
Question: Answer the following question given this paragraph: Another related process is effusion. Effusion is the process of a confined gas escaping through a tiny hole in its container. Effusion can be observed by the fact that a helium-filled balloon will stop floating and sink to the floor after a day or so. This is because the helium gas effuses through tiny pores in the balloon. Both diffusion and effusion are related to the speed at which various gas molecules move. Gases that have a lower molar mass effuse and diffuse at a faster rate than gases that have a higher molar mass. While they are similar processes, there is a key difference between diffusion and effusion. Diffusion describes the process of a gas spreading out at a constant pressure, such as throughout a room. Effusion, on the other hand, describes the process of a gas spreading out from a high pressure surroundings to lower pressure surroundings. Q: What is the process of a confined gas escaping through a tiny hole in its container called? Choices: - effluent - dissipation - dilution - effusion A:
Answer: effusion
*Question*
Answer the following question given this paragraph: The most important source of electromagnetic waves on Earth is the sun. Electromagnetic waves travel from the sun to Earth across space and provide virtually all the energy that supports life on our planet. Many other sources of electromagnetic waves depend on technology. Radio waves, microwaves, and X rays are examples. We use these electromagnetic waves for communications, cooking, medicine, and many other purposes. Q: What is the most important source of electromagnetic waves on earth? Choices: - cell phones - wireless networks - radios - the sun A:
**Answer**
the sun
(Q).
Answer the following question given this paragraph: Heterotrophic organisms use organic compounds, usually from other organisms, as carbon sources. Q: Heterotrophic organisms use organic compounds, usually from other organisms, as a source of what basic element of life? Choices: - oxygen - monoxide - hydrogen - carbon A:
(A).
carbon