Explain the membrane dynamics of the glucose transporter, GLUT1, and how the structure dictates its function as a transporter. In your discussion, explain: (a) How the primary structure and resulting secondary structure of GLUT 1 is stable as an integral membrane protein.
(b) How the secondary and tertiary structure accommodates the transport of the polar molecule, glucose, across the hydrophobic lipid bilayer.
(c) Draw a diagram depicting the conformational changes that GLUT1 is purported to execute in order to function as a glucose transporter.

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

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i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

the answer to you question is   jet streams

they both go up but then go back down. they both end lower than they started. lastly, they both are competitive/the second on.

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