Which of the following organelles utilizes signal peptides to target newly synth

Question

Which of the following organelles utilizes signal peptides to target newly synthesized proteins? ?.) Lysosome b.) Cytosol c) Chloroplast d.) Endoplasmic Reticulum e.) Golgi Apparatus Approximately what percentage of the human genome codes for proteins? a.) 2% b.) 25% c) 50% d) 99% e.) 100% Which of the following explains why enzymes facilitate chemical reactions? a. b. c. d. They raise the temperature of the reaction and make products appear quickly They change the Keq of the reaction and make products appear quickly They donate energy to the reaction They lower the activation energy Which of the following pieces of equipment is best suited to examine the internal structure of cells at a level of resolution that reveals the smallest organelles? a. Compound light microscope b. Transmission electron microscope c. Scanning electron microscope d. Centrifuge e. Phase contrast microscope Which of the following does not have DNA? a. Nucleus b. Mitochondria c. Chloroplasts d. Bacteria e. Lysosomes which of the following molecules is most likely to cross biological membrane by simple diffusion? a. Glucose b. Oxygen c. Starch d. Sodium ion e. Lipid droplet

Explanation / Answer

1) Cytosol utilises signal peptides to target newly synthesized proteins.

2)Approximately 2% of human genome codes for proteins

3)The enzymes facilitate chemical reaction by lowering the activation energyenergy. Hence answer for this question is d.

4)The transmission electron microscope is suited to examine the internal structure of cell at the level of revolution that reveals smallest organelles.

5). The lysosomes does not have DNA.

6) Oxygen is most likely to cross biological membrane by simple diffusion.

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