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an air conditioning system is used to maintain a house at a constant temperature of 22 when outside is 40 the house is gaining heat from outdoors at a rate of 30000 j and the hat generated in the housefrom the people,lights and ampliance s amoonts to6000 kj/h.For a COP […]

Q1. Where in a body do sperm and urine share the similar passage? What male structures serve only for excretion, which only for reproduction, which for both? Q2. Throughout the development from zygote to maturity, a bean plant forms the structures: stem secondary roots, vascular cambium, embryo sac, cotyledons. Describe […]

Consider a simple model cell that consists of cytoplasm surrounded by a cell membrane. The cell’s initial volume is 3 nL and contains 0.3 M protein and 0.2M Ca++. The cell is placed into a 500mL tank of 0.1 M calcium chloride. Neither Ca++ nor Cl- can cross the membrane. […]

Assignment: Scientists, Disciplines, and Discoveries Details: Photosynthetic protists are a diverse group of eukaryotic organisms that range from unicellular algae to large multicellular seaweeds. They form the base of the food chain in aquatic ecosystems and produce much of the atmospheric oxygen. They do not cause diseases but they can […]