Answer the following question given this paragraph: Our lives are filled with light. Through vision, the most valued of our senses, light can evoke spiritual emotions, such as when we view a magnificent sunset or glimpse a rainbow breaking through the clouds. Light can also simply amuse us in a theater, or warn us to stop at an intersection. It has innumerable uses beyond vision. Light can carry telephone signals through glass fibers or cook a meal in a solar oven. Life itself could not exist without light's energy. From photosynthesis in plants to the sun warming a cold-blooded animal, its supply of energy is vital. Q: Life itself could not exist without what energy, which plays a vital role in photosynthesis? Choices: - time energy - spin energy - magnetic energy - light energy A:
light energy
(Question)
Answer the following question given this paragraph: Roots grow in length and width from primary and secondary meristem. Q: Roots grow in length and width from the primary and secondary what? Choices: - pistil - frill - leaf - meristem A:
(Answer)
meristem
Ques: Answer the following question given this paragraph: Elements are represented by an atomic symbol. Q: An atomic symbol is used to represent what? Choices: - electron shell - mole - weight - element A:
Ans: element
(Q).
Answer the following question given this paragraph: Under the right pressure conditions, lowering the temperature of a substance in the liquid state causes the substance to solidify. The opposite effect occurs if the temperature is increased. Q: What happens to a substance in a liquid state when the temperate is lowed? Choices: - it melts - it evaporates - it dissipates - it solidifies A:
(A).
it solidifies
Ques:Answer the following question given this paragraph: 10.7 Cardiac Muscle Tissue Cardiac muscle is striated muscle that is present only in the heart. Cardiac muscle fibers have a single nucleus, are branched, and joined to one another by intercalated discs that contain gap junctions for depolarization between cells and desmosomes to hold the fibers together when the heart contracts. Contraction in each cardiac muscle fiber is triggered by Ca++ ions in a similar manner as skeletal muscle, but here the Ca++ ions come from SR and through voltage-gated calcium channels in the sarcolemma. Pacemaker cells stimulate the spontaneous contraction of cardiac muscle as a functional unit, called a syncytium. Q: Pacemaker cells stimulate the spontaneous contraction of cardiac muscle as a functional unit, called a what? Choices: - coenocyte - tapetum - adipocytes - syncytium A:

Ans:syncytium
Ques: Answer the following question given this paragraph: Sodium and chloride ions have equal but opposite charges. Opposites attract, so sodium and chloride ions attract each other. They cling together in a strong ionic bond. You can see this in row 2 of Figure above . Brackets separate the ions in the diagram to show that the ions in the compound do not share electrons. You can see animations of sodium chloride forming at these URLs:. Q: Why do sodium and chloride ions attract each other? Choices: - sulfides attract - magnetism - like attracts like - opposites attract A:
Ans:
opposites attract