Answer the following question given this paragraph: How metalloids behave in chemical interactions with other elements depends mainly on the number of electrons in the outer energy level of their atoms. Metalloids have from three to six electrons in their outer energy level. Boron, pictured in the Figure below , is the only metalloid with just three electrons in its outer energy level. It tends to act like metals by giving up its electrons in chemical reactions. Metalloids with more than four electrons in their outer energy level (arsenic, antimony, and tellurium) tend to act like nonmetals by gaining electrons in chemical reactions. Those with exactly four electrons in their outer energy level (silicon and germanium) may act like either metals or nonmetals, depending on the other elements in the reaction. Q: How metalloids behave in chemical interactions with other elements depends mainly on the number of what, in the outer energy level of their atoms? Choices: - protons - positrons - neutrons - electrons A:
electrons
Answer the following question given this paragraph: Systemic circulation is the part of the cardiovascular system that carries oxygen-rich blood away from the heart, to the body, and returns oxygen-poor blood back to the heart. Oxygen-rich blood leaves the left ventricle through the aorta. Then it travels to the body's organs and tissues. The tissues and organs absorb the oxygen through the capillaries. Oxygen-poor blood is collected from the tissues and organs by tiny veins, which then flow into bigger veins, and, eventually, into the inferior vena cava and superior vena cava. This completes systemic circulation. The blood releases carbon dioxide and gets more oxygen in pulmonary circulation before returning to systemic circulation. The inferior vena cava returns blood from the body. The superior vena cava returns blood from the head. Q: What is the part of the cardiovascular system that carries oxygen-rich blood away from the heart, to the body, and returns oxygen-poor blood back to the heart? Choices: - peripheral nervous system - somatic system - molecular circulation - systemic circulation A:
systemic circulation
Q: Answer the following question given this paragraph: Radioactive elements and isotopes have unstable nuclei. To become more stable, the nuclei undergo radioactive decay. In radioactive decay, the nuclei give off, or emit, radiation in the form of energy and often particles as well. There are several types of radioactive decay, including alpha, beta, and gamma decay. Energy is emitted in all three types of decay, but only alpha and beta decay also emit particles. Q: Radioactive decay can give off energy and what else? Choices: - light - ions - atoms - particles A:
A: particles
Question: Answer the following question given this paragraph: Q: What would cause warm receptors to signal the hypothalamic thermostat? Choices: - hypothermia - lower temperature - hyperventilation - increased temperature A:
Answer: increased temperature
*Question*
Answer the following question given this paragraph: Many human traits are controlled by more than one gene. These traits are called polygenic traits (or characteristics). The alleles of each gene have a minor additive effect on the phenotype. There are many possible combinations of alleles, especially if each gene has multiple alleles. Therefore, a whole continuum of phenotypes is possible. Q: What human traits are controlled by more than one gene? Choices: - mutant traits - autolysis traits - maladaptive traits - polygenic traits A:
**Answer**
polygenic traits
(Q).
Answer the following question given this paragraph: Q: Most of the gray matter is on the surface of the brain, surrounding what other type of matter? Choices: - blue - dark matter - corrugated - white A:
(A).
white