membranes of winter wheat are able to remain Which of the following is one of th
ID: 3164408 • Letter: M
Question
membranes of winter wheat are able to remain Which of the following is one of the ways that the when it is extremely cold? A) by increasing the average length of the fatty acid tails in membrane B) by decreasing the percentage of cholesterol molecules in the membra C) by increasing the percentage of unsaturated phospholipids in the me D) by decreasing the number of hydrophobic proteins in the membrane E) by increasing the percentage 8 ne mbrane of saturated phospholipids in the membrane Which of the ollowing molecules is most likely to cross biological membrane by simple diffusi A) Glucose Ceth12O B) Oxygen gas O2 C) Starch D) Sodium lon Na E) Lipid droplet 10. Which type of membrane transport consumes ATP? A) Active transport of Na B) Simple diffusion of CO2 C) Facilitated diffusion of amino acid D) Osmosis E) Facilitated diffusion of K 11. Which one of the following biological polymers is mismatched with its monomer? A) DNA-nucleotide B) enzyme amino acid C) chitin - monosaccharide protein - amino acid E) cellulose - amino acicd The hierarchical nature of cellular structure is accurately illustrated in which of the following lists of substances (from smallest to largest)? A) nucleotides, chromosome, DNA, nucleus, cell B) cellulose, glucose, cell wall, cell C) nucleotides, nucleus, DNA, chromosome, cell D) nucleotides, DNA, chromosome, nucleus protein, membrane, amino acids, chloroplast, CellExplanation / Answer
8. Option b - By increasing the percentage of unsaturated phospholipids.
Unsaturated phospholipids are essential for maintaining the fluid mosaic model of plasma membrane under extreme conditions.
9. Option b - Oxygen gas O2
The best example we can give is the exchange of gases in our body. This takes place due to the simple diffusion of O2 between RBC and cells.
10. Option a - Active transport of sodium. This is carried out in a P-type ATPase transporter which uses ATP as an energy source for the active transport of sodium.
11. Option E - cellulose - amino acid. Cellulose is a polysaccharide. The monomer is a monosaccharide. Hence it is a mismatch.
12. Option D - Nucleotides, DNA, Chromosomes, Nucleus, Cell
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