Answer the following question given this paragraph: Q: What is the term for when a species no longer exists? Choices: - reproduction - endangered - survival - extinction A:
extinction
(Question)
Answer the following question given this paragraph: The cytoskeleton is a cellular "scaffolding" or "skeleton" that crisscrosses the cytoplasm. All eukaryotic cells have a cytoskeleton, and recent research has shown that prokaryotic cells also have a cytoskeleton. The eukaryotic cytoskeleton is made up of a network of long, thin protein fibers and has many functions. It helps to maintain cell shape. It holds organelles in place, and for some cells, it enables cell movement. The cytoskeleton also plays important roles in both the intracellular movement of substances and in cell division. Certain proteins act like a path that vesicles and organelles move along within the cell. The threadlike proteins that make up the cytoskeleton continually rebuild to adapt to the cell's constantly changing needs. Three main kinds of cytoskeleton fibers are microtubules, intermediate filaments, and microfilaments. Q: What is the term for a cellular "scaffolding" that crisscrosses the cytoplasm? Choices: - protoskeleton - cellulose - collagen - cytoskeleton A:
(Answer)
cytoskeleton
Ques: Answer the following question given this paragraph: Outcomes of Glycolysis Glycolysis starts with glucose and ends with two pyruvate molecules, a total of four ATP molecules and two molecules of NADH. Two ATP molecules were used in the first half of the pathway to prepare the six-carbon ring for cleavage, so the cell has a net gain of two ATP molecules and 2 NADH molecules for its use. If the cell cannot catabolize the pyruvate molecules further, it will harvest only two ATP molecules from one molecule of glucose. Mature mammalian red blood cells are not capable of aerobic respirationthe process in which organisms convert energy in the presence of oxygenand glycolysis is their sole source of ATP. If glycolysis is interrupted, these cells lose their ability to maintain their sodium-potassium pumps, and eventually, they die. The last step in glycolysis will not occur if pyruvate kinase, the enzyme that catalyzes the formation of pyruvate, is not available in sufficient quantities. In this situation, the entire glycolysis pathway will proceed, but only two ATP molecules will be made in the second half. Thus, pyruvate kinase is a rate-limiting enzyme for glycolysis. Q: What process starts with glucose and ends with two pyruvate molecules, a total of four atp molecules and two molecules of nadh? Choices: - secretion - absorption - photosynthesis - glycolysis A:
Ans: glycolysis
(Q).
Answer the following question given this paragraph: Unlike oxygen, carbon dioxide is more concentrated in the blood in the capillaries surrounding the alveoli than it is in the air inside the alveoli. Therefore, carbon dioxide diffuses in the opposite direction. It moves out of the blood and into the air. Q: Which gas moves from the blood in the capillaries into the air? Choices: - nitrogen - carbon monoxide - oxygen - carbon dioxide A:
(A).
carbon dioxide
Ques:Answer the following question given this paragraph: Fish hatch into larvae that are different from the adult form of the species. Q: Fish hatch into larvae that are different from the adult form of? Choices: - sex - parasites - color - species A:

Ans:species
Answer the following question given this paragraph: Most of the stars pictured in this view of the night sky are hundreds of light years from Earth. A light year is the distance that light can travel in a year, or about 6 trillion (6,000,000,000,000) miles. As this example shows, quantities in science may be very large. Many other quantities in science are very small. Both very large and very small numbers have many zeroes, so they are hard to read and write without making mistakes. That's where scientific notation comes in. Q: The distance that light can travel in a year is known as what? Choices: - earth year - beam year - solar year - light year A:
light year