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Transcript
Name
Date
Class
Homework (231-235)
LESSON 7-1
What are bacteria?
Directions: On each line, write the term from the word bank that correctly completes
each sentence. Each term is used only once.
archaea
bacteria
conjugation
cytoplasm
endospore
fission
flagella
food
plasmid
reproduction
shapes
identical
1. Prokaryotes that live in almost every habitat on Earth
are
.
2. Prokaryotes that live in extreme environments are
3. A typical bacterium has
membrane and a cell wall.
4. A(n)
.
and DNA surrounded by a cell
is a small circular piece of DNA.
5. Bacteria generally have one of three basic
determines how they are named.
, which
6. Different bacteria have different methods for movement and for
obtaining
.
7. Many bacteria move by using long whiplike structures called ____________
8. Bacteria reproduce asexually by
genetically
, which produces two
cells.
9. During
, two bacteria of the same species attach to each
other and combine their genetic material.
10. Conjugation increases genetic diversity, but it is not considered to
be
.
11. A(n)
forms when a bacterium builds a thick internal
wall around its chromosome.
.