Biology_Chapter1

1. Some bacteria can move toward or away from chemicals is a process called________ 

• A. chemotaxis

• B. positive response

• C. negative response

• D. stimulus

2. Some bacteria can move toward or away from light is a process called________ 

• A. phototaxis

• B. positive response

• C. negative response

• D. stimulus

3. The ________ is the smallest and most fundamental unit of matter

• A. atom
  

• B. molecule 

• C. DNA

• D. bacteria

4. Organelles are small structures that exist within ________and perform specialized functions. 

• A. cells

• C. tissue 

• C. organs

• D. All of the above  

5. ________ are single-celled organisms that lack organelles surrounded by a membrane and do not have nuclei surrounded by nuclear membranes 

• A. Prokaryotes

• C. flowering plants 

• C. animals

• D. All of the above

6. ________ have membrane-bound organelles and nuclei 

• A. eukaryote

• B. prokaryotes  

• C. bacteria

• D. All of the above 

7. Organs are collections of tissues grouped together based on a ________ 

• A. metabolism

• B. common function 

• C. energy processing

• D. All of the above  

8. The source of this diversity is________, the process of gradual change during which new species arise from older species. 

• A. evolution

• B. bacteria 

• C. fungi

• D. animal 

9. Species that are most similar to each other are put together within a grouping known as a ________ 

• A. genus

• C. domain

• C. phylum

• D. animal

10. A ________is a diagram showing the evolutionary relationships among biological species based on similarities and differences in genetic or physical traits or both. 

• A. cell cycle

• B. phylogenetic tree

• C. biological branches

• D. All of the above