Answer the following question given this paragraph: Of the three basic types of emissions, gamma radiation has the highest penetrating power. Thick, high density materials (such as lead) are required to stop gamma emissions. The thickness of the shielding will determine the effectiveness of the protection offered by the lead. Q: Of the three basic types of emissions, which has the highest penetrating power? Choices: - ultraviolet radiation - fluid radiation - chemical radiation - gamma radiation A:
gamma radiation
(Question)
Answer the following question given this paragraph: Endothermic reactions absorb energy from the surroundings as the reaction occurs. When 1 mol of calcium carbonate decomposes into 1 mol of calcium oxide and 1 mol of carbon dioxide, 177.8 kJ of heat is absorbed. The process is shown visually in Figure above (B). The thermochemical reaction is shown below. Q: What kind of reactions absorb energy from their surroundings as they occur? Choices: - exothermic - hydrostatic - autotrophic - endothermic A:
(Answer)
endothermic
Ques: Answer the following question given this paragraph: Molar mass is equal to density multiplied by molar volume. Q: Molar mass is equal to density multiplied by what? Choices: - molar energy - molar weight - molar gravity - molar volume A:
Ans: molar volume
(Q).
Answer the following question given this paragraph: Nucleic acids consist of chains of small molecules called nucleotides, which are held together by covalent bonds. Q: What holds together the small molecules called nucleotides which make up nucleic acids? Choices: - permanent bonds - dissonance bonds - curvature bonds - covalent bonds A:
(A).
covalent bonds
Ques:Answer the following question given this paragraph: Plant Parasites and Pathogens The production of sufficient good-quality crops is essential to human existence. Plant diseases have ruined crops, bringing widespread famine. Many plant pathogens are fungi that cause tissue decay and eventual death of the host (Figure 24.25). In addition to destroying plant tissue directly, some plant pathogens spoil crops by producing potent toxins. Fungi are also responsible for food spoilage and the rotting of stored crops. For example, the fungus Claviceps purpurea causes ergot, a disease of cereal crops (especially of rye). Although the fungus reduces the yield of cereals, the effects of the ergot's alkaloid toxins on humans and animals are of much greater significance. In animals, the disease is referred to as ergotism. The most common signs and symptoms are convulsions, hallucination, gangrene, and loss of milk in cattle. The active ingredient of ergot is lysergic acid, which is a precursor of the drug LSD. Smuts, rusts, and powdery or downy mildew are other examples of common fungal pathogens that affect crops. Q: Which is the active ingredient of cereal crop disease, ergot? Choices: - byblis acid - amino acid - pixelation acid - lysergic acid A:

Ans:lysergic acid
Question: Answer the following question given this paragraph: Insects can have specialized mouthparts, such as a proboscis, to siphon the nectar from a flower. Q: Insects can have specialized mouthparts, such as a proboscis, to siphon the nectar from what? Choices: - stems - shrubs - fruits - flowers A:
Answer:
flowers