1. This organelle is involved in production of cellular energy and is characteri

Question

1. This organelle is involved in production of cellular energy and is characterized by folded membrane called cristae. A) Golgi apparatus B) lysosome C) rough endoplasmic reticulum D) mitochondria E) Peroxisome 4. Active transport moves polar, hydophobic and large molecules across plasma membrane A) Against its concentration gradient B) Down its concentration gradient C) Requires energy and a carrier protein D) Both A and B E) Both A and c 2. This membranous organelle is the site of protein synthesis for proteins that are secreted by the cell. A) Golgi apparatus B) lysosome C) rough endoplasmic reticulum D) mitochondria E) Peroxisome 5. Phospholipids of the plasma membrane are arranged A) around a central layer of cholesterol. B) in a single layer with polar heads facing outwards. C) as a bilayer with their nonpolar tails sandwiched between the polar heads. D) as a bilayer with their polar heads sandwiched between the nonpolar tails. face of the Golgi apparatus is 6. In chromatin, the DNA molecule wraps around proteins to 3. The receive spherical vesicles from the rough endoplasmic reticulum. called A) cis; convex B) trans; concave C) cis; flattened D) trans; convex E) All of the above A) nucleotides. B) codons. C) integral protein. D) histones. E) None of the above

Explanation / Answer

1. D . Mitochondria

2. C. Rough endoplasmic reticulum

3. C. Cis and flattened

4. E. Against its concentration gradient and require energy and carrier protien.

5. C. As a bilayer with their non polar tails sandwiched between the polar ends.

6. D. Histones

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