Q: What kind of family is haumea part of? Read this paragraph and choose the correct option from the provided answers: Haumea is part of a collisional family. This is a group of astronomical objects that formed from an impact. This family has Haumea, its two moons, and five more objects. All of these objects are thought to have formed from a collision very early in the formation of the solar system. Choices: - eoan family - a moclobemide family - orbital family - a collisional family A:
a collisional family

Q: What is water vapor density known as? Read this paragraph and choose the correct option from the provided answers: saturation vapor density given in the table. Strategy To solve this problem, we need to break it down into a two steps. The partial pressure follows the ideal gas law,. Choices: - density - thickness - ambiance - humidity A:
humidity

Q: Q: Tropomyosin is a type of what, that winds around the chains of the actin filament and covers the myosin-binding sites to prevent actin from binding to myosin? Read this paragraph and choose the correct option from the provided answers: Tropomyosin is a protein that winds around the chains of the actin filament and covers the myosin-binding sites to prevent actin from binding to myosin. Tropomyosin binds to troponin to form a troponin-tropomyosin complex. The troponintropomyosin complex prevents the myosin "heads" from binding to the active sites on the actin microfilaments. Troponin also has a binding site for Ca++ ions. To initiate muscle contraction, tropomyosin has to expose the myosin-binding site on an actin filament to allow cross-bridge formation between the actin and myosin microfilaments. The first step in the process of contraction is for Ca++ to bind to troponin so that tropomyosin can slide away from the binding sites on the actin strands. This allows the myosin heads to bind to these exposed binding sites and form cross-bridges. The thin filaments are then pulled by the myosin heads to slide past the thick filaments toward the center of the sarcomere. But each head can only pull a very short distance before it has reached its limit and must be "re-cocked" before it can pull again, a step that requires ATP. Choices: - enzyme - bacteria - amine - protein A:
A: protein

Question: Q: A major diversification of what animal group occurred about 50 million years ago, possibly spurred by worldwide climate change? Read this paragraph and choose the correct option from the provided answers: The supertree also shows that another major diversification of mammals occurred about 50 million years ago. Again, worldwide climate change may have been one reason. This time Earth's temperature rose. The warmer temperature led to a greater diversity of plants. This would have meant more food for mammals or their prey. Choices: - reptiles - amphibians - insects - mammals A:
Answer: mammals

*Question*
Q: What is the amount of energy required to begin a chemical reaction known as? Read this paragraph and choose the correct option from the provided answers: All chemical reactions need energy to get started. Even reactions that release energy need a boost of energy in order to begin. The energy needed to start a chemical reaction is called activation energy . Activation energy is like the push a child needs to start going down a playground slide. The push gives the child enough energy to start moving, but once she starts, she keeps moving without being pushed again. Activation energy is illustrated in Figure below . Choices: - decomposition energy - reaction energy - positive energy - activation energy A:
**Answer**
activation energy

Q: Q: What occurs as a result of the discharge of static electricity? Read this paragraph and choose the correct option from the provided answers: Zachary Wilson. Lightning is the result of the discharge of static electricity . CC BY-NC 3.0. Choices: - thunder - clouds - drought - lightning A:
A: lightning