Biology Junction Team - BIOLOGY JUNCTION

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).

Periodic Table of the Elements

Legend
Metals	A solid substance that is a good conductor of heat and electricity. Can be formed into many shapes.
Metalloid	“Middle elements” – conduct heat and electricity better than nonmetals, but not as well as metals. Easier to shape than nonmetals, but not as easy as metals. Solid at room temperature.
Nonmetals	A poor conductor of heat and electricity. Not easily formed into shapes.

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Quiz Genetics

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Name:

Genetics

True/False

Indicate whether the sentence or statement is true or false.

Genetics is the branch of biology that involves the study of how different traits are transmitted from one generation to the next.

Mendel discovered predictable patterns in the inheritance of traits.

The scientific study of heredity is called genetics.

In Mendel’s experiments with the flower color of pea plants, only the parental generation produced white flowers.

Mendel concluded that the patterns of inheritance are determined entirely by the environment.

The law of independent assortment was proposed by Mendel to explain his observations of inheritance patterns.

Genes on chromosomes are the units of inheritance.

The allele for a recessive trait is usually represented by a capital letter.

Heterozygous individuals have two of the same alleles for a particular gene.

10.

A probability of 1/4 is equal to a probability of 75 percent.

11.

The dominant allele for tallness in pea plants is represented by the letter t.

12.

In codominance, two alleles are expressed at the same time.

13.

All genes have only two alleles.

14.

A dihybrid cross involves two pairs of contrasting traits.

15.

Crosses involving a study of one gene are called monohybrid crosses.

Completion

Complete each sentence or statement.

16.

A reproductive process in which fertilization occurs within a single plant is ____________________.

17.

Mendel produced strains of pea plants through the process of ____________________.

18.

____________________ refers to the transmission of traits from parent to offspring in sexually reproducing organisms.

19.

In heterozygous individuals, only the ____________________ allele achieves expression.

20.

A trait that is not expressed in the F1 generation resulting from the crossbreeding of two genetically different, true-breeding organisms is called ____________________.

21.

The principle that states that one factor may mask the effect of another factor is the principle of ____________________.

22.

In Mendel’s experiments, a trait that disappeared in the F1 generation but reappeared in the F2 generation was always a ____________________.

23.

The cellular process that results in the segregation of Mendel’s factors is ____________________.

24.

Mendel formulated two principles known as the laws of ____________________.

25.

An organism that has two identical alleles for a trait is called ____________________.

26.

An organism’s ____________________ refers to the set of alleles it has inherited.

27.

The likelihood that a specific event will occur is called ____________________.

In pea plants, tallness (T) is dominant to shortness (t). Crosses between plants with these traits can be analyzed using a Punnett square similar to the one shown below.

	T	t
T	1	2
t	3	4

28.

Refer to the illustration above. The parents shown in the Punnett square could have offspring with a genotype ratio of ____________________.

29.

Refer to the illustration above. The phenotype of the plant that would be represented in box “4” of the Punnett square would be ____________________.

30.

A cross involving two pairs of contrasting traits is a(n) ____________________ cross.

Safety quiz

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Safety Quiz

Check your knowledge of lab safety!

1. When you find an unlabeled bottle of chemical in the lab, you should:

Smell it to see what it is
Ask your teacher
Waft the chemical
Pour it down the drain

2. If you break a beaker in the lab, the first thing you should do is:

Tell your teacher
Clean up the glass
Put the broken glass in a separate container labeled broken glass
Carefully use your hands to pick up the largest pieces

3. When you complete your lab work, which of the following should you not do:

Clean & return materials to the lab cart
Try your own experiment
Turn in all lab work to your teacher
Return to your own seat

4. Which of the following procedures is not correct:

Add acid to water
Pipette by mouth
Keep flammables away from open flames
Never used chipped glass

5. What is the most important thing to do before starting a lab:

Put on goggles
Put on your lab apron
Pick up your materials from the lab cart
Read the entire lab

6. When heating liquids in test tubes:

Always tightly cork the test tube
hold the test tube pointing upward
Hold test tubes at a slant pointed away from everyone
None of the above

7. Which of the following is true about heating glass:

Only use glassware marked Kimex
Only use glassware marked Pyrex
Both A & B are correct
Always ask the teacher if the container can be heated

8. Which of the following is correct lab procedure:

Place heated glassware on countertops away from the edge
Hold dissecting specimens tightly with your hand when cutting with a scalpel
Wear gloves when dissecting & dispensing irritating chemicals
Pour excess chemical back into its original container

9. Which of the following statements is correct:

Never use cracked glassware
Wash hands before & after dissecting
Treat all chemicals as poisonous
All of the above

10. When inserting glass tubing into stoppers:

Use glycerin & a twisting motion
Hold the stopper tightly as you push the glass tubing into it
Insert the tubing into the stopper under water
Always ask your teacher to insert the glass tubing for you

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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

Name	Number	Weight

Melts		Boils