7. Which of the following does not have DNA A) Nucleurs C) Chloroplasts D) Bacte
ID: 219947 • Letter: 7
Question
7. Which of the following does not have DNA A) Nucleurs C) Chloroplasts D) Bacteria E) Lysosomes 8. Which of the following is one of the ways that the membranes of winter wheat are able to remain fuid 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 membrane C) by increasing the percentage of unsaturated phospholipids in the membrane D) by decreasing the number of hydrophobic proteins in the E) by increasing the percentage of saturated phospholipids in the membrane 9. Which of the following molecules is most likely to cross biological membrane by simpie difusion A) Glucose CsHi2O B) Oxygen gas O 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 CO C) Facilitated diffusion of amino acid D) Osmosis E) Facilitated diffusion of K 1. Which one of the following biological polymers is mismatched with its monomer? A) DNA nucleotide B) enzyme - amino acicd C) chitin monosaccharide D) protein - amino acid E) cellulose- amino acid nature of cellular structure is accurately illustrated in which of the following lists of substances (from smallest to largest)? 8) cellulose, glucose, cell wall, cell C) nucleotides, D) nucleotides, DNA, chromosome, E) protein, membrane, amino acids, chloroplast, cell nucleus, DNA, chromosome, cellExplanation / Answer
Answer 7 E) lysosomes.
Answer 8 C) by increasing the percentage of unsaturated phospholipids in the membrane.
Answer 9 B) Oxygen, gas O2.
Oxygen is a small molecule and it's nonpolar, so it easily passes through a cell membrane.
Answer 10 A) Active transport of Na+
Active transport is usually associated with accumulating high concentrations of molecules that the cell needs, such as ions, glucose and amino acids.
Answer 11 C) chitin - monosaccharide
Chemically, it is a nitrogenous polysaccharide.
Answer 12 D) nucleotides, DNA, chromosomes, nucleus, cell.
Hierarchical Nature of Cellular Structure
Level 1: small organic molecules
Level 2: macromolecules
Level 3: supramolecular structures
Level 4: organelles & sub-cellular structures
Level 5: the cell
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