QUESTION 12 Large, hydrophilic solutes move across membranes against their concentration gradients by: diffusion through ion channels active transport and diffusion through ion channels facilitated diffusion active transport passive diffusion through the lipid bilayer

QUESTION 73 Because of the phospholipid cell membrane, water cannot diffuse into or out of the cell. O True O False

Question 32 In both triacylglycerol and phosphoglyceride, there is one glycerol, but triacylglycerol has and phosphoglyceride has fatty acid molecules. Question 33

QUESTION 14 Which of the following is mismatched? Symport carrier - transmembrane protein Leak K* channel - peripheral protein Primary active transporter - transmembrane protein Gs protein - peripheral protein

Question 29 Sponges (Porifera) All of the above pump water through their sponge material with the movement of collar cells Have larvae that swim using cilia Extract oxygen from the sea water Are assemblies of cells that work together cooperatively as one organism

QUESTION 4 Disulfide bonds form in_environments, which are generally oxidizing; intracellular oxidizing; extracellular reducing; intracellular reducing; extracellular

Question 32 Gluconeogenesis O creates glucose from FAT and protein O creates new leukocytes from cells other than the bone marrow O boosts your immunity lowers blood glucose similar to insulin

Question 5 An a-helix has the sequence: NH3-Ser-Glu-Gly-Asp-Trp-Gln-Leu-His-Val-Phe-Ala-Lys-Val-Glu- COO-. The carbonyl oxygen (in the peptide bond) of the W5 residue is hydrogen bonded to the amide nitrogen of H8 E2 O V9 O S1

Question 6 When light hits the special light-reactive molecular units inside rod cells, how do these units respond? They break in half and float into the eye's vitreous humor One bond shifts positions from cis to trans orientation they form a dehydration synthesis reaction with neighboring units, forming cross bridges O they open Na+ channels which rush into the cell Question 7 Which of the following about eyes is NOT RIGHT? O Spiders have image forming eyes O Sea Stars have eye spots O some compound eyes in arthropods have tiny lenses O cephalopods evolved eyes from early vertebrates

Question 24 The glucose transporter in erythrocytes is named GLUT1. The transport system is an example of A symporters ion channels OB. active transport OC. facilitated diffusion