My Classroom Material 45 - BIOLOGY JUNCTION

Biomes of the World

%CODE1% Biomes of the World

Find each term and then number and define it on the back of this sheet.

ABIOTIC	BIOME	BIOTIC
CARNIVORE	CONSUMER	DECIDUOUS
DESERT	FRESHWATER	GRASSLAND
HERBIVORE	INTERTIDAL	MARINE
OMNIVORE	PRODUCER	RAINFOREST
SAVANNA	TAIGA	TUNDRA

Worms Puzzle

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Flatworms, Roundworms, & Rotifers

Fill in the blanks with the correct letters. The words in the list on the right provide a clue to the answer.

1) _at_he _ m _ _ th_s		phylum of flatworms
2) _ hre_		number of body layers in worms
3) b _ l _ te_al		symmetry f flatworms
4) d _ rs _ l		upper body surface of worms
5) _ en _ ral		lower body surface of worms
6) _cto _ erm		outermost cell layer of worms
7) _es _ d _ rm		middle cell layer of worms
8) _ nd_der _		innermost cell layer of worms
9) _c _ e _ om_te		solid body in flatworms
10) _oe _ o _		body cavity
11) _ast_ov _ sc _ l _ r		gut with a single opening in flatworms
12) a _ sor_ti _ n		how flatworms exchanges gases with their environment
13) _nte _ io _		head or front end of a flatworm
14) c _ ph _ li _ ati_n		anterior end with sensory structures concentrated there
15) p _ r _ si_e		worms that live on or inside the body of their host
16) _ur_ell _ r _ _		class of flatworms containing the frehwater planarian
17) p _ ar _ n_		extendable feeding tube on the underside of planarians
18) _ ucu_		secreted by planarians to glide across
19) f _ a_e		excretory cells in worms that filter wastes
20) a _ _ lia		clusters of nerve cells in worms
21) _erm _ _ hr _ di_es		worms that make both eggs & sperm
22) _re _ a _ oda		class of flatworms containg flukes
23) _ucke _ s		found on the ends of flukes to attach to hosts
24) _e _ u _ ent		tough outer covering on flukes
25) _ e _ to_a _		class containing tapeworms
26) s _ ol _ x		anterior end of a tapeworm with hooks & suckers
27) _r_gl _ t_id _		reproductive sections of a tapeworm’s body
28) _e _ _ to_a		phylum for roundworms
29) _a _ er		shape of both ends of a roundworms body
30) _ ut _ cle		protective noncellular layer of roundworms
31) a _ ca _ is		roundworm found in pig & horse intestines
32) _ oo _ w_r_s		intestinal parasitic roundworm with cutting plates in it’s mouth
33) _ri_h _ n _ _ is		disease that result from eating infected undercooked pork
34) _i _ wo_m _		most common parasitic roundworm of children in the U.S.
35) _ot _ f _ ra		phylum of worms with a crown of cilia surrounding the mouth
36) _as _ _ x		muscular organ of rotifers to break down food
37) _se _ do_oel _ mat _ _		rotifers & nematodes are examples

Solution

Quiz Cell Reproduction

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Name:

Cell Reproduction

True/False Indicate whether the sentence or statement is true or false.
	1.	The information needed by a cell to direct its activities and to determine its characteristics is contained in molecules of deoxyribonucleic acid (DNA).
	2.	Gametes are diploid so that when fertilization occurs, the resulting zygote will have the characteristic number of chromosomes for that species.
	3.	A karyotype is a type of gene.
	4.	Cell division in bacteria and eukaryotes takes place in precisely the same manner.
	5.	Cells spend most of their lifetime in interphase.
	6.	After the replication of a cell’s chromatids, there are twice as many centromeres as there are chromosomes.
	7.	Asexual reproduction occurs by mitosis.
	8.	During telophase, a nuclear envelope surrounds each new set of chromosomes.
	9.	Chromatids separate from each other during telophase.
	10.	After mitosis and cytokinesis, each new cell has a complete set of the original cell’s chromosomes.
Completion Complete each sentence or statement.
	11.	Following replication of its DNA, each chromosome contains two ____________________, which are attached to each other by a centromere.
	12.	Chromosomes that are not involved in sex determination are called ____________________.
	13.	A picture of a cell’s chromosomes is called a ____________________.
	14.	The sequence of events that occurs in a cell from one mitotic division to the next is called the ____________________.
	15.	“Cables” made of microtubules that extend from the poles of a cell to the centromeres during cell division are called ____________________.
	16.	In mitosis, anaphase follows ____________________.
	17.	The stage of meiosis during which homologues line up along the equator of the cell is called ____________________.
	18.	The process called ____________________ guarantees that the number of chromosomes in gametes is half the number of chromosomes in body cells.
	19.	A reciprocal exchange of corresponding segments of DNA is called ____________________.
	20.	As a result of spermatogenesis, ____________________ cells are produced that can all develop into sperm cells. As a result of oogenesis, only ____________________ cell(s) develop(s) into (an) egg cell(s).

Quiz Cells

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Name:

Cells

True/False Indicate whether the sentence or statement is true or false.
	1.	Robert Hooke observed cork cells under a microscope.
	2.	Anton van Leeuwenhoek concluded that all plants are composed of cells.
	3.	All living things are composed of many cells.
	4.	A cell is the smallest unit that can carry on all the processes of life.
	5.	Inside smaller cells, materials and information can be transported more quickly.
	6.	Membranes are selectively permeable if they allow only certain substances to diffuse across them.
	7.	Lysosomes carry on cellular respiration.
	8.	Microtubules and microfilaments form the cytoskeleton of cells.
	9.	Colonial organisms differ from single-celled organisms in that each cell cannot support its own existence.
Completion Complete each sentence or statement.
	10.	The statement that “cells are produced only from existing cells” is part of the ____________________.
	11.	The ratio of surface area to volume puts limitations on a cell’s ____________________.
	12.	Eukaryotic cells are much larger and have more specialized functions than prokaryotic cells because they contain ____________________ which take up space and carry out specialized activities.
	13.	A cell with a well-defined nucleus surrounded by a nuclear membrane is called a(n) ____________________ cell.
	14.	A cell membrane is said to be ____________________ permeable because it allows the passage of some solutes and not others.
	15.	____________________ molecules have “heads” and “tails” and are found in the cell membrane.
	16.	Scientists have discovered that cells contain smaller specialized structures known as ____________________.
	17.	The spherical organelles that are the site of protein synthesis in a cell are the ____________________.
	18.	The meshlike network of protein fibers that supports the shape of the cell is called the ____________________.
	19.	The fluid portion of the cytoplasm is called the ____________________.
	20.	Photosynthesis takes place in the ____________________ of plant cells.

Quiz DNA

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Name:

Quiz DNA

True/False Indicate whether the sentence or statement is true or false.
	1.	Despite years of research, the actual structure of the DNA molecule is still unknown.
	2.	Franklin’s X-ray diffraction images suggested that the DNA molecule resembled a tightly coiled spring, a shape called a helix.
	3.	In all living things, DNA replication must occur after cell division.
	4.	Multiple DNA polymerases may become attached to more than one portion of a DNA molecule at once, speeding up the rate of replication.
	5.	Before a DNA molecule can replicate itself, it must make itself more compact. This is accomplished by the double helix coiling up on itself.
Completion Complete each sentence or statement.
	6.	A DNA subunit composed of a phosphate group, a five-carbon sugar, and a nitrogen-containing base is called a(n) ____________________.
	7.	The name of the five-carbon sugar that makes up a part of the backbone of molecules of DNA is ____________________.
	8.	Watson and Crick determined that DNA molecules have the shape of a(n) ____________________.
	9.	Due to the strict pairing of nitrogen base pairs in DNA molecules, the two strands are said to be ____________________ to each other.
	10.	According to base-pairing rules, adenine pairs with ____________________ and guanine pairs with ____________________.
	11.	The enzyme that is responsible for replicating molecules of DNA by attaching complementary bases in the correct sequence is ____________________.
	12.	Enzymes called ____________________ are responsible for unwinding the DNA double helix by breaking the hydrogen bonds that hold the complementary strands together.
	13.	The process by which DNA copies itself is called ____________________.
	14.	Molecules of ____________________ carry instructions for protein synthesis from the nucleus to the cytoplasm.
	15.	The nitrogen-containing base that is found only in RNA is ____________________.
	16.	The enzyme responsible for making RNA is called ____________________.
	17.	The form of ribonucleic acid that carries genetic information from the DNA to the ribosomes is ____________________.