When scientists take clues found in rocks, fossils, and the surrounding area to learn about an animal's life, we call this a

fossilization

petrification

projecting

reconstruction

Why can oxygen gas, and carbon dioxide gas, CO2, move through the cell membrane?

Which statement is true? A) Simple sugars are made of polysaccharides. B) Glycerol is made of fatty acids. C) RNA molecules are made of nucleotides. D) Amino acids are made of proteins.

Complete hydrolysis of a glycerophospholipid yields glycerol, two fatty acids (18:2 (δ9,12) and 18:0), phosphoric acid, and choline in the molar ratio 1:1:1:1:1. name this class of glycerophospholipid, and draw the structure of this lipid.

What is meant by the term "antiparallel?"

Jason lives near a state park, and he likes hiking through the grassy trails that lead to a nearby lake. He appreciates nature and the surrounding components making up the ecosystem.

Mr. Helms was admitted to the hospital with chest pains and shortness of breath. His wife was panicked since her 72-year-old husband had a history of heart disease. After examination and an echocardiogram, Dr. Collins spoke with Mrs. Helms.

Which of these groups of fruits are drupes? Pineapples, mulberries, and figs Oranges, lemons, and limes Plums, apricots, and coconuts Strawberries, blackberries, and raspberries Apples, pears, and quinces

Define abiotic factors

Sam, 53, has just had a stroke (or brain attack-where portions of the brain die due to a failure in blood flow) and is now extremely aphasic but can still understand and act appropriately on spoken directions. His neurologist orders a pet scan.

What determines osmosis from one fluid compartment to another? the temperature difference between compartments the relative size of each compartment the relative volume in each compartment the relative concentration of solutes in each compartment