SCI115 Unit 1 Milestone 1.docx - 20 questions were answered...

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20 questions were answered correctly . 3 questions were answered incorrectly . 1 At what level of protein structure do amino acid chains twist and fold? Quaternary Primary Secondary Tertiary CONCEPT Proteins 2 Where is cytosol found? Between the two layers of the plasma membrane Inside the nucleus In the cytoplasm Surrounding the cell CONCEPT Cytoplasm 3 What is a nucleotide? A nucleic acid that produces protein in cells
An organelle found in eukaryotic cells that houses the DNA and controls activity within the cell A nucleic acid that contains all the genetic information of an organism A component of DNA and RNA made up of sugar, a phosphate group and a nitrogen base CONCEPT Nucleic Acids 4 Which organelle is mainly responsible for synthesizing proteins? Golgi body Ribosomes Smooth ER Nuclear envelope CONCEPT Endoplasmic Reticulum 5 What molecules in the cell membrane help move molecules from a low to a high concentration gradient? Transport proteins Endocytosis Vesicles Diffusion pumps CONCEPT
Facilitated Diffusion 6 A carbohydrate with two sugar units would be a(n) __________. Oligosaccharide Polysaccharide Carbosaccharide Monosaccharide CONCEPT Carbohydrates 7 Which set of statements is true concerning the plasma membrane? It is primarily composed of proteins and nucleic acids, and it controls what enters and leaves the cell. It is primarily composed of lipids and it keeps anything from entering or leaving the cell.

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