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_____ are surface appendages that allow a bacterium to stick to a surface. |
3. Fimbriae Fimbriae enable bacterial cells to stick to a surface. |
What is the function of a bacterium’s capsule? |
4. protection A bacterium’s capsule has a protective role. |
The DNA-containing region of this bacterial cell is indicated by the letter _____. |
4. D The nucleoid region contains DNA. |
Where is a bacterial cell’s DNA found? |
4. nucleoid region Bacteria lack a nucleus; their DNA is found in the nucleoid region. |
In a bacterium, where are proteins synthesized? |
1. ribosomes Ribosomes are involved in the manufacture of polypeptides (proteins). |
What name is given to the rigid structure, found outside the plasma membrane, that surrounds and supports the bacterial cell? |
3. cell wall The cell wall is a rigid supporting structure. |
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 The plasma membrane is selectively permeable. Bacterial DNA is found in the nucleoid region. |
The structure that regulates the passage of material into and out of this bacterial cell is indicated by the letter _____. |
3. C The plasma membrane is selectively permeable. |
Beginning within the nucleus, the first step leading to the synthesis of a polypeptide is _____. |
5. transferring of information from DNA to messenger RNA Transcription is the first of the two main steps of protein synthesis. |
Mitochondria are found in _____. |
5. plant and animal cells All eukaryotic cells, including plant and animal cells, contain mitochondria. |
Cells I
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