Ques: Q: When cardiac muscle contracts, the heart does what? Read this paragraph and choose the correct option from the provided answers: Cardiac muscle is found only in the walls of the heart. It is striated, or striped, because its muscle fibers are arranged in bundles. Contractions of cardiac muscle are involuntary. This means that they are not under conscious control. When cardiac muscle contracts, the heart beats and pumps blood. Choices: - cardiac arrest - irregular heartbeat - heart murmur - pumps blood A:
Ans: pumps blood

Ques: Q: What part of an atom is electrically neutral? Read this paragraph and choose the correct option from the provided answers: An atom's protons and electrons carry electrical charges. Protons, with their positive charge, are designated p+. Electrons, which have a negative charge, are designated e. An atom's neutrons have no charge: they are electrically neutral. Just as a magnet sticks to a steel refrigerator because their opposite charges attract, the positively charged protons attract the negatively charged electrons. This mutual attraction gives the atom some structural stability. The attraction by the positively charged nucleus helps keep electrons from straying far. The number of protons and electrons within a neutral atom are equal, thus, the atom's overall charge is balanced. Choices: - protons - electrons - newtons - neutrons A:
Ans: neutrons

Ques: Q: What process joins two haploid gametes into a diploid zygote? Read this paragraph and choose the correct option from the provided answers: Fertilization joins two haploid gametes into a diploid zygote. Choices: - embryo - fusion - migration - fertilization A:
Ans: fertilization

Ques: Q: In places like the grand canyon, hard rocks that are resistant to weathering form what, while softer rocks that weather more easily form slopes? Read this paragraph and choose the correct option from the provided answers: The rocks in this photo of the Grand Canyon are all sedimentary. Hard rocks that are resistant to weathering form cliffs. Softer rocks that weather more easily form slopes. Choices: - valleys - peaks - crevasses - cliffs A:
Ans:
cliffs