NALFPUZZ c03 CEL 5-6 4th 12/5/03 2:19 PM Page 5
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Name _______________________________________________ Date ________________ Class ______________
SCIENCE PUZZLERS, TWISTERS & TEASERS
Cells: The Basic Units of Life
Endosymbiotic Simulation City
1. Imagine that you are a recognized world expert on cells. Baron
Von Dukenheimer is the leader of a medieval walled city, and he
needs your help. It seems that someone has told him that his city
is about 600 years behind the times. The Baron knows that one of
the most spectacular systems in nature is the cell, and he hopes to
learn something about organization and production from you, the
cell expert. You tell him that the cell is a lot like a city. Help him
understand how the parts of a cell work by writing in the appropriate space something you’d find in a city that performs the same
function in the cell.
Example: endoplasmic reticulum
a. vacuole
→
b. nucleus
→
c. lysosomes
→
d. ribosomes
→
→
postal system
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Word Connections
2. Each of the following sentences includes at least one hidden
word from the chapter. These words can be found by looking at
part of one word and connecting it to the beginning of the next
word. For example, the word dog could be hidden in the words
Judo games. Circle the hidden words below.
a. She speaks to the flock, though neither goose nor gander
understand her.
b. I love the glockenspiel, though I must say that the organ is my
favorite instrument.
c. Once llamas have moved in to your neighborhood, it is very
difficult to get rid of them.
d. Desi’s Uncle Otis sued for damages in a court of law.
SCIENCE PUZZLERS, TWISTERS & TEASERS
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NALFPUZZ c03 CEL 5-6 4th 12/5/03 2:19 PM Page 6
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Name _______________________________________________ Date ________________ Class______________
Cells: The Basic Units of Life, continued
Cell Break
3. Harvey Hoodrini is the town’s most talented escape artist. For the
state fair, Perry Mecium has created a cell that he thinks even
Harvey can’t break out of. Four walls of the cell use a special combination of letters and numbers to release the locks. Once all four
locks are released, they will reveal a message that explains how to
get out of the cell.
Unscramble the chapter terms surrounding Harvey’s cell and
write them in the boxes. Vertical words should be written from top
to bottom. Then use the letters from the numbered squares to
decode the secret message.
h
i
m
o
o
n
8
2
i
d
13
c
a
t
4
m
7
o
y
b
r
1
a
5
o
s
p
c
10
e
s
l
12
9
i
o
t
6
p
i
11
x
e
l
g
o
Phrase: 1 2 3 4 5 6 7 8 9 10 11 12 13
6
s
HOLT SCIENCE AND TECHNOLOGY
l
o
3
m
c
g
Copyright © by Holt, Rinehart and Winston. All rights reserved.
m
r
NALFPUZZ AK 57-61 3rd 12/12/03 2:53 PM Page 57
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Answer Key
Many of the questions in this workbook are open-ended and thus are intended to elicit
thoughtful, creative responses. Therefore, in many cases a variety of correct answers are
possible and any reasonable answer should be accepted. Suggested answers are provided
below for open-ended questions as well as for questions that prompt students for morespecific responses.
Copyright © by Holt, Rinehart and Winston. All rights reserved.
It’s Alive!! Or Is It?, p. 3
1. a. proteins
b. carbohydrates
c. lipids
d. nucleic acids
2. reproduction, heredity, metabolism, cells,
homeostasis, growth
3. a. F b. T c. T d. F e. F f. T g. F h. T
TULO is an earthworm.
Cells: The Basic Units of Life, p. 5
1. Sample Answers:
a. warehouses or water tower
b. Town Hall or library
c. police force or junkyard
d. factories
2. a. nor gander = organ
b. organ is my = organism
c. Once llamas = cell
d. Otis sued = tissue
3. top: mitochondria, left: ribosomes,
right: cytoplasm, bottom: Golgi complex,
phrase: The door is open.
The Cell in Action, p. 7
1. a. diffusion
b. fermentation
2. centromere
3. a. passive transport
b. centromere
c. exocytosis
d. fermentation
e. prokaryotic cells
4. d. Each pair appears in each row and appears
right side up, sideways, and upside down.
5. cell
ANSWER KEY
The World of Life Science, p. 1
1. a. Ask a question.
b. Test the hypothesis.
c. Communicate results.
d. Form a hypothesis.
e. Analyze the results.
f. Draw conclusions.
2. 1 - scanning electron microscope
2 - transmission electron microscope
3 - compound light microscope
4 - X ray, 5 - CT scan, 6 - naked eye
Heredity, p. 9
1. a. male
b. true breeding
c. allele, recessive
2. a. genes
b. mitosis
3. 1/2 1/3 1/6 16.7%
4. Punnett square
5. sex cell
Genes and DNA, p. 11
1. a. Bianca, Bess, and Brooke are carriers.
b. Yes, because her children have green hair.
c. No, she cannot be a child of theirs,
because she does not have green hair.
2. That cat can’t catch a rat.
3. a. lemonade nineteen adenine
b. lengthy; mine thymine
c. brand name DNA
d. hoped I greeted pedigree
4. Watson, Crick, double, Adenine, thymine
DNA is the code of life.
The Evolution of Living Things, p. 13
1. a. Beagle
b. species
c. vestigial
d. trait
SCIENCE PUZZLERS, TWISTERS & TEASERS
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