Cells I

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_____ are surface appendages that allow a bacterium to stick to a surface. 1. Ribosomes 2. Mitochondria 3. Fimbriae 4. Flagella 5. Cell walls

What is the function of a bacterium's capsule? 1. protein synthesis 2. DNA storage 3. propulsion 4. protection 5. adhesion

The DNA-containing region of this bacterial cell is indicated by the letter _____. http://session.masteringbiology.com/problemAsset/1100503/4/2701q.jpg 1. A 2. B 3. C 4. D 5. E

Where is a bacterial cell's DNA found? 1. ribosomes 2. nucleus 3. peroxisome 4. nucleoid region 5. capsule

In a bacterium, where are proteins synthesized? 1. ribosomes 2. nucleus 3. peroxisome 4. nucleoid region 5. capsule

What name is given to the rigid structure, found outside the plasma membrane, that surrounds and supports the bacterial cell? 1. capsule 2. pili 3. cell wall 4. flagella 5. nucleoid region

The _____ is the bacterial structure that acts as a selective barrier, allowing nutrients to enter the cell and wastes to leave the cell. 1. plasma membrane 2. nucleoid region 3. ribosome 4. pili 5. cell wall

The structure that regulates the passage of material into and out of this bacterial cell is indicated by the letter _____. http://session.masteringbiology.com/problemAsset/1100503/4/2708q.jpg 1. A 2. B 3. C 4. D 5. E

Beginning within the nucleus, the first step leading to the synthesis of a polypeptide is _____. 1. translation of an RNA nucleotide sequence into a sequence of amino acids 2. linking of nucleotides to form a polypeptide 3. removal of introns from RNA and the stitching together of exons 4. translation of a DNA nucleotide sequence into a sequence of amino acids 5. transferring of information from DNA to messenger RNA

Mitochondria are found in _____. 1. animal cells only 2. plant cells only 3. all cells 4. animal cells and prokaryotic cells, but not plant cells 5. plant and animal cells