24, 7.1, U-LOS whicherthe following is a-mi membrane more thait lower empei b. u

Question

24, 7.1, U-LOS whicherthe following is a-mi membrane more thait lower empei b. unannted fatty acids had a d. the double bonds block 25, 11,ULos Choose moves Kress the m concentratin with help ofra prepr glucose a. simple anion c. facilitated diffi d, active tmprt 26, 7.1, U-LOS Which ofthe following types of a. proteins and cellulose phospholipids and cellos e. ucleic acids and proteas d. phospholipids and preleins glycoproteins and cholesterol 27, 73, AN-LOS Apatent hashad a serious acaantand ks a lot at'NasL ham ra replenish body Alds, disilaa w- -ofSusae am directly into one ofhis wen wha wilbe - a. ne unfavorable effect askmg aswar b. red blood cells will shrivel be áchd- ah e red blood cells will swell and burst beaise aciled wmrs d. red blood cells will shanel baIN d EDab e. red blood cells will swell and burst becaa aalad 28, 1.1, UL06 For most ecosystems, returns tothe ecosystem is a. sunlighc; heat b. heat; light c. planes; animals d, plants, heat c. producers, a surers

Explanation / Answer

1)Oils, mostly from plant sources, have some double bonds between some of the carbons in the hydrocarbon tail, causing bends or “kinks” in the shape of the molecules.Because of the kinks in the hydrocarbon tails, unsaturated fats can't pack as closely together, making them liquid at room temperature.

2) Facilitated Diffusion - Facilitated diffusion is a passive transport mechanism in which carrier proteins shuttle molecules across the cell membrane without using the cell’s energy supplies. Instead, the energy is provide by the concentration gradient, which means that molecules are transported from higher to lower concentrations, into or out of the cell. The carrier proteins bind to glucose, which causes them to change shape and translocate the glucose from one side of the membrane to the other. Red blood cells use facilitated diffusion to absorb glucose.

3) The cell membrane (also known as the plasma membrane or cytoplasmic membrane) is a biological membrane that separates the interior of all cells from the outside environment.It consists of the lipid bilayer with embedded proteins.Major structural molecules are Phospolipids and proteins.

4) Question not clearly visible.

5) Sunlight and Heat - The ultimate source of energy (for most ecosystems) is the sun. The ultimate fate of energy in ecosystems is for it to be lost as heat.

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