Q: Q: What substance causes oxidation by accepting electrons? Read this paragraph and choose the correct option from the provided answers: In the reaction above, the zinc is being oxidized by losing electrons. However, there must be another substance present that gains those electrons and in this case that is the sulfur. In other words, the sulfur is causing the zinc to be oxidized. Sulfur is called the oxidizing agent. The zinc causes the sulfur to gain electrons and become reduced and so the zinc is called the reducing agent. The oxidizing agent is a substance that causes oxidation by accepting electrons. The reducing agent is a substance that causes reduction by losing electrons. The simplest way to think of this is that the oxidizing agent is the substance that is reduced, while the reducing agent is the substance that is oxidized. The sample problem below shows how to analyze a redox reaction. Choices: - solvents - enzymes - thermal agent - oxidizing agent A:
A: oxidizing agent

Q: Q: Light waves differ based on their frequency and what else? Read this paragraph and choose the correct option from the provided answers: 36.5 Vision Vision is the only photo responsive sense. Visible light travels in waves and is a very small slice of the electromagnetic radiation spectrum. Light waves differ based on their frequency (wavelength = hue) and amplitude (intensity = brightness). In the vertebrate retina, there are two types of light receptors (photoreceptors): cones and rods. Cones, which are the source of color vision, exist in three formsL, M, and Sand they are differentially sensitive to different wavelengths. Cones are located in the retina, along with the dim-light, achromatic receptors (rods). Cones are found in the fovea, the central region of the retina, whereas rods are found in the peripheral regions of the retina. Visual signals travel from the eye over the axons of retinal ganglion cells, which make up the optic nerves. Ganglion cells come in several versions. Some ganglion cell axons carry information on form, movement, depth, and brightness, while other axons carry information on color and fine detail. Visual information is sent to the superior colliculi in the midbrain, where coordination of eye movements and integration of auditory information takes place. Visual information is also sent to the suprachiasmatic nucleus (SCN) of the hypothalamus, which plays a role in the circadian cycle. Choices: - density - weight - voltage - amplitude A:
A: amplitude

Q: Q: What is the opening formed between adjacent vertebrae for the exit of a spinal nerve called? Read this paragraph and choose the correct option from the provided answers: Figure 7.24 Intervertebral Disc The bodies of adjacent vertebrae are separated and united by an intervertebral disc, which provides padding and allows for movements between adjacent vertebrae. The disc consists of a fibrous outer layer called the anulus fibrosus and a gel-like center called the nucleus pulposus. The intervertebral foramen is the opening formed between adjacent vertebrae for the exit of a spinal nerve. Choices: - inferior vertebral notch - sympathetic ganglion - spinous process - intervertebral foramen A:
A: intervertebral foramen

Q: Q: What is the process by which undigested food leaves the body? Read this paragraph and choose the correct option from the provided answers: Choices: - glycolysis - digestion - peristalsis - egestion A:
A: egestion