Q: Q: Hydrogen chloride contains one atom of hydrogen and one atom of what? Read this paragraph and choose the correct option from the provided answers: Hydrogen chloride contains one atom of hydrogen and one atom of chlorine. Because the. Choices: - magnesium - calcium - nitrogen - chlorine A:
A: chlorine

Q: Q: The brain develops from this early tube structure and gives rise to specific regions of the adult brain. as the neural tube grows and differentiates, it enlarges into three vesicles that correspond to the forebrain, midbrain, and this? Read this paragraph and choose the correct option from the provided answers: into the brain, and the posterior region becomes the spinal cord. Tissues at the edges of the neural groove, when it closes off, are called the neural crest and migrate through the embryo to give rise to PNS structures as well as some non-nervous tissues. The brain develops from this early tube structure and gives rise to specific regions of the adult brain. As the neural tube grows and differentiates, it enlarges into three vesicles that correspond to the forebrain, midbrain, and hindbrain regions of the adult brain. Later in development, two of these three vesicles differentiate further, resulting in five vesicles. Those five vesicles can be aligned with the four major regions of the adult brain. The cerebrum is formed directly from the telencephalon. The diencephalon is the only region that keeps its embryonic name. The mesencephalon, metencephalon, and myelencephalon become the brain stem. The cerebellum also develops from the metencephalon and is a separate region of the adult brain. The spinal cord develops out of the rest of the neural tube and retains the tube structure, with the nervous tissue thickening and the hollow center becoming a very small central canal through the cord. The rest of the hollow center of the neural tube corresponds to open spaces within the brain called the ventricles, where cerebrospinal fluid is found. Choices: - anteriorbrain - rearbrain - astrobrain - hindbrain A:
A: hindbrain

Q: Q: What three primary colors of light can be distinguished by the human eye? Read this paragraph and choose the correct option from the provided answers: The human eye can distinguish only red, green, and blue light. These three colors are the primary colors of light. All other colors of light can be created by combining the primary colors. Secondary colors of lightcyan, yellow, and magentaform when two primary colors combine equally. Choices: - blue, red, orange - yellow, green, blue - red, green, yellow - red, green, blue A:
A: red, green, blue

Q: Q: How does a cell's membrane keep extracellular materials from mixing with it's internal components? Read this paragraph and choose the correct option from the provided answers: CHAPTER REVIEW 3.1 The Cell Membrane The cell membrane provides a barrier around the cell, separating its internal components from the extracellular environment. It is composed of a phospholipid bilayer, with hydrophobic internal lipid "tails" and hydrophilic external phosphate "heads. " Various membrane proteins are scattered throughout the bilayer, both inserted within it and attached to it peripherally. The cell membrane is selectively permeable, allowing only a limited number of materials to diffuse through its lipid bilayer. All materials that cross the membrane do so using passive (non energy-requiring) or active (energy-requiring) transport processes. During passive transport, materials move by simple diffusion or by facilitated diffusion through the membrane, down their concentration gradient. Water passes through the membrane in a diffusion process called osmosis. During active transport, energy is expended to assist material movement across the membrane in a direction against their concentration gradient. Active transport may take place with the help of protein pumps or through the use of vesicles. Choices: - absorbs extracellular materials - repels extracellular materials - destroys extracellular materials - provides a barrier A:
A: provides a barrier