Q: In which process do signaling molecules from embryonic cells cause transcriptional changes in nearby target cells? Read this paragraph and choose the correct option from the provided answers: Choices: - replication - maturation - orientation - induction A:
induction

Q: Where is chemical energy stored? Read this paragraph and choose the correct option from the provided answers: 2. Chemical energy is energy that is stored in the bonds between the atoms of compounds. If the bonds are broken, the energy is released and can be converted to other forms of energy. Choices: - ribosomes - cell wall - nucleus - atom bonds A:
atom bonds

Q: Q: Although it is not vital to humans, calcitonin is important for calcium homeostasis in adults of some species in what group characterized by backbones? Read this paragraph and choose the correct option from the provided answers: Choices: - mammals - reptiles - invertebrates - vertebrates A:
A: vertebrates

Question: Q: What term describes how closely packed the particles of matter are? Read this paragraph and choose the correct option from the provided answers: Density is an important physical property of matter. It reflects how closely packed the particles of matter are. When particles are packed together more tightly, matter has greater density. Differences in density of matter explain many phenomena, not just why helium balloons rise. For example, differences in density of cool and warm ocean water explain why currents such as the Gulf Stream flow through the oceans. You can see a colorful demonstration of substances with different densities at this URL:. Choices: - range - mass - space - density A:
Answer: density

*Question*
Q: Cellular respiration and photosynthesis are important parts of which cycle? Read this paragraph and choose the correct option from the provided answers: Cellular respiration and photosynthesis are important parts of the carbon cycle. The carbon cycle is the pathways through which carbon is recycled in the biosphere. While cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere. The exchange of carbon dioxide and oxygen during photosynthesis ( Figure below ) and cellular respiration worldwide helps to keep atmospheric oxygen and carbon dioxide at stable levels. Choices: - vapor cycle - greenhouse effect - water cycle - carbon cycle A:
**Answer**
carbon cycle

(Question)
Q: What keeps earth in orbit around the sun? Read this paragraph and choose the correct option from the provided answers: Why do satellites stay in orbit? Why don't they crash into Earth due to the planet's gravity? Newton's law of universal gravitation describes what happens. Every object in the universe is attracted to every other object. Gravity makes an apple fall to the ground. Gravity also keeps you from floating away into the sky. Gravity holds the Moon in orbit around Earth. It keeps Earth in orbit around the Sun. Choices: - energy - motion - momentum - gravity A:
(Answer)
gravity