Ques: Q: What disease is given as an example of a sex-linked trait? Read this paragraph and choose the correct option from the provided answers: Hemophilia is a sex-linked trait. Carrier mothers can pass along the affected allele to 50% of their sons. Females with hemophilia would have to receive an affected allele from each parent, making females with hemophilia rare. Choices: - arthritis - hypertension - emphysema - hemophilia A:
Ans: hemophilia

Ques: Q: An object undergoing circular motion experiences centripetal what? Read this paragraph and choose the correct option from the provided answers: Linear or tangential acceleration refers to changes in the magnitude of velocity but not its direction. We know from Uniform Circular Motion and Gravitation that in circular motion centripetal acceleration, a c , refers to changes in the direction of the velocity but not its magnitude. An object undergoing circular motion experiences centripetal acceleration, as seen in Figure 10.5. Thus, a t and a c are perpendicular and independent of one another. Tangential acceleration a t is directly related to the angular acceleration. Choices: - velocity - vibration - transmission - acceleration A:
Ans: acceleration

Ques: Q: Transport of water and solutes in plants water potential is a measure of the difference in potential energy between a water sample and this? Read this paragraph and choose the correct option from the provided answers: 30.5 Transport of Water and Solutes in Plants Water potential () is a measure of the difference in potential energy between a water sample and pure water. The water potential in plant solutions is influenced by solute concentration, pressure, gravity, and matric potential. Water potential and transpiration influence how water is transported through the xylem in plants. These processes are regulated by stomatal opening and closing. Photosynthates (mainly sucrose) move from sources to sinks through the plant's phloem. Sucrose is actively loaded into the sieve-tube elements of the phloem. The increased solute concentration causes water to move by osmosis from the xylem into the phloem. The positive pressure that is produced pushes water and solutes down the pressure gradient. The sucrose is unloaded into the sink, and the water returns to the xylem vessels. Choices: - green water - dirty water - salty water - pure water A:
Ans: pure water

Ques: Q: In this type of reaction, an element replaces another element in a compound, and the element is in any state of matter but is not an ion? Read this paragraph and choose the correct option from the provided answers: A single-replacement reaction is one in which an element replaces another element in a compound. An element is in either the solid, liquid, or gas state and is not an ion. The example below shows the reaction of solid magnesium metal with aqueous silver nitrate to form aqueous magnesium nitrate and silver metal. Choices: - double-replacement reaction - replication reaction - polar reaction - single-replacement reaction A:
Ans:
single-replacement reaction