Biology Grade 8

7/27/2019 Biology Grade 8

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ARANDIA COLLEGE INC.Valarao St. Airport Village, Paraaque City

SECOND PERIODICAL TESTScience 8 (Charity)

Name: __________________________________________Date: ______________

Teacher: Ms. Sharon M. Hababag Score: ______________

I. Read the statements carefully. Write TRUE on the space provided if the statementis true or FALSE if it is false.

_______1. During the metaphase, the chromosomes become aligned along the equator of the

cell.

_______2. The homologue pair separates and each moves to opposite poles.

_______3. The interphase and mitosis together constitute the cell cycle.

_______4.

The nuclear membrane is formed around the newly-formed sets of daughterchromosomes during the telophase.

_______5. During mitosis, loosely arranged strands of chromosomes become coiled,

shortened and distinct during the metaphase.

_______6. A male can produce sperm with either a Y or X chromosome.

_______7. Mitosis is the process by which chromosomes are duplicated within cells.

_______8. Cytokinesis happens until two daughter cells are formed.

_______9. The Cell Cycle is the sequence of growth, DNA replication, growth and cell division

that all cells go through._______10. Chromatids(or pairs of chromosomes) separate and begin to move to opposite ends

of the cell during metaphase.

II. Choose your answer from the box. Write only the letter on the line before each

number.

_______1. It is the genetic material that is responsible for passing the traits of parents

to children.

_______2. These are normal cells containing complete set of genetic materials or

chromosomes.

_______3. These are cells that contain only half of the genetic material as in sex cells.

_______4. A mass of genetic material composed of DNA and proteins that condense to formchromosomes and appear during interphase.

_______5. The control center of the cell.

_______6. An organized structure of DNA and protein found in cells.

_______7. The structure that connects the two chromatids.

_______8. The period of cell growth and development between mitotic divisions.

_______9. The phase where cytokinesis occurs.

_______10.It is produced when protein fibers radiate from centrioles.

A. Diploid B. Haploids C. DNA

D. Nucleus E. Chromatin F. Chromosome

G. Interphase H. Spindle fibers I. Cytokinesis

J. Centromere K. Metaphase L. Cell cycle


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III. Choose from the given options the best answer to the item. Write the letter of your

choice on the space provided.

____1. This is painful, persistent heartburn.

a. Peptic ulcers b. Crohns Disease c. Celiac Disease d. GERD

____2. What condition involves the flow of contents from the stomach to the esophagus and is

associated with hiatal hernias?a. Peptic ulcers b. Crohns Disease c. Celiac Disease d. GERD

____3. What phase is shown below?

a. prophase b. metaphase c. anaphase d. telophase d. interphase

____4. What phase is shown below?

a. prophase b. metaphase c. anaphase d. telophase d. interphase

____5. The stage in mitosis wherein the chromosomes begin to migrate to each side of the

cell.

a. anaphase b. interphase c. metaphase d. prophase

____6. The stage between two cell divisions.

a.

metaphase b. interphase c. anaphase d. telophase____7 The stage in which the nuclear membrane reappears and the chromosomes begin to

uncoil.

a. prophase b. telophase c. interphase d. anaphase

____8. In which phase are the chromosomes aligned along the cells equator.

a. metaphase b. anaphase c. telophase d.anaphase

____9. If a cell has 14 chromosomes at the start of mitosis, how many chromosomes will each

daughter cell have?

a. 28 b. 14 c. 7 d. 46

____10. What do you call the non-dividing stage of the cell cycle?a. prophase b. interphase c. anaphase d. metaphase

____11. What process gives the gametes their half chromosome number?

a. G1 phase b. mitosis c. S phase d. meiosis

____12. What event takes place before crossing over?

a. separation of homologous chromosomes

b. interkinesis

c. tetrad formation

d. formation of spindle fibers

____13. Which of the following does not occur during meiosis II?

a. The chromosomes increase in size

b. Chromosomes align at the metaphase plate

c. Sister chromatids separate.

____14. The disturbance of the regular or normal functioning of the body.

a. disorder b. disease c. esophagitis


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____15. The inflammation of the esophagus commonly caused by infection.

a. Gastritis b. Esophagitis c. diarrhea d. Constipation

____16. It pertains to the impairment of the normal functioning of the parts of the body

manifested by particular sign and symptoms.

a. disorder b. disease c. obesity d. lactose

____17. It is a long thin, flexible tube with a small fiber optic video camera which has a light

attached at one end and equipped with tiny biopsy forceps that are used to cut orobtain tissue sample.

a. CT Scan b. endoscope c. Gastric manometry

____18. It is a type of disorder of the digestive system that involves the frequent passing of

loose or watery stools.

a. constipation b. gastritis c. diarrhea d. obesity

____19. It is a type of eating disorder characterized by emaciation, a relentless pursuit of

thinness and unwillingness to maintain a normal or healthy weight, a distortion of body.

a. bulimia b. binge c. anorexia d. hyperacidity

____20. Which of the following bacteria that can cause inflammation on the lining of the

stomach that could lead to peptic ulcer?

a. E. coli b. Salmonella c. H. pylori d. Lactobacillus

____21. It is a test that used to measure the strength of the muscle of the anus.

a. Gastrointestinal manometer c. Anorectal manometer

b. c. x-ray test d. body mass index

____22 It is the building blocks of protein.

a. amino acid b. glucose c. peptides d. fatty acid

For item nos. 23-25: Solanum tuberosum or potato has a chromosome number of 2n=24.

____23. How many chromosomes are there at metaphase?

a. 20 b. 24 c. 23 d. 48

____24. How many daughter cells are there by the end of telophase?

a. 3 b. 4 c. 2 d. 6

____25 How many chromatids are there during anaphase?

a. 45 b. 46 c. 48 d. 45

For item nos. 26-30, refer to the diagram below. Note the cells are not arranged in theorder in which the cell cycle occurs.

_____26. Which cell is in metaphase?

_____27. Which cell is in the first phase of M phase (mitosis)?

_____28. In cell A, what structure is labeled X?

a. chromatin b. chromosomes c. centriole d. DNA

_____29. Which cell is in anaphase?

_____30. Which cell is in telophase?


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IV. Draw and describe each of the stages of mitosis.

Prophase Metaphase

Anaphase Telophase

V. Compare mitosis and meiosis.

Basis of Comparison Mitosis Meiosis

1. Number of daughter cells formed

2. Chromosome number of each daughter

cell

3. Type of cell it occurs

4. Number of cell division


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VI. Answer the following:A.1. Explain why protein is needed in the body and list 3 examples of foods in which protein is found.

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2. Proteins can either be referred to as complete or incomplete. Describe the difference

between these terms and discuss complementary proteins in your answer.

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B. 1. Name 2 different functions of fat within the body.

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C. 1. Explain the difference between simple and complex carbohydrates.

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Biology Grade 8

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