Answer the following question given this paragraph: Atoms of different elements can combine in simple whole number ratios to form chemical compounds. Q: Atoms of different elements can combine in simple whole number ratios to form what? Choices: - mixtures - carbon compounds - combinations - chemical compounds A:
chemical compounds
Answer the following question given this paragraph: The cornea is the transparent outer covering of the eye. It protects the eye and also acts as a convex lens, helping to focus light that enters the eye. Q: What is the transparent outer covering of the eye? Choices: - pupil - iris - retina - cornea A:
cornea
Q: Answer the following question given this paragraph: The anion is the methanoate ion, which is commonly called the formate ion. One reaction to consider is that of a carboxylic acid and an alcohol. When combined under the proper conditions, a water molecule will be removed, and the remaining pieces will combine to form a new functional groupthe ester functional group:. Q: The anion is the methanoate ion, which is commonly called the what? Choices: - isomer - metabolized ion - glutathione ion - formate ion A:
A: formate ion
Question: Answer the following question given this paragraph: Development of the Vertebral Column and Thoracic cage Development of the vertebrae begins with the accumulation of mesenchyme cells from each sclerotome around the notochord. These cells differentiate into a hyaline cartilage model for each vertebra, which then grow and eventually ossify into bone through the process of endochondral ossification. As the developing vertebrae grow, the notochord largely disappears. However, small areas of notochord tissue persist between the adjacent vertebrae and this contributes to the formation of each intervertebral disc. The ribs and sternum also develop from mesenchyme. The ribs initially develop as part of the cartilage model for each vertebra, but in the thorax region, the rib portion separates from the vertebra by the eighth week. The cartilage model of the rib then ossifies, except for the anterior portion, which remains as the costal cartilage. The sternum initially forms as paired hyaline cartilage models on either side of the anterior midline, beginning during the fifth week of development. The cartilage models of the ribs become attached to the lateral sides of the developing sternum. Eventually, the two halves of the cartilaginous sternum fuse together along the midline and then ossify into bone. The manubrium and body of the sternum are converted into bone first, with the xiphoid process remaining as cartilage until late in life. Q: The accumulation of what cells begin the development of the vertebral column and thoracic cage? Choices: - semiosis cells - hindbrain cells - False cells - mesenchyme cells A:
Answer: mesenchyme cells
*Question*
Answer the following question given this paragraph: Q: Because action potentials are so brief, a neuron can produce hundreds per what? Choices: - day - minute - lifetime - second A:
**Answer**
second
(Question)
Answer the following question given this paragraph: No, not all birds can fly. And not all birds have wings. This penguin is a good example. Their wings have evolved into flippers, adapted for swimming instead of flying. The kiwi of New Zealand is another bird without wings. Q: What is caused by atoms or ions when they share or transfer valance electrons? Choices: - loss of charge - gain of charge - force of repulsion - force of attraction A:
(Answer)
force of attraction