FREE BIOLOGY AND STUDY GAMES ABOUT ECBMODULE7

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FREE BIOLOGY AND STUDY GAMES ABOUT ECBMODULE7

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -38 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: 15. What is the difference between a polar body and an egg?

Answer:

A polar body is a non-functional female gamete, because it is far too small to function properly. an egg is the one female gamete produced by meiosis that is large enough to function properly.

Question 2: 3. Why do proteins have to coat the DNA in chromosomes?

Answer:

Without the proteins in a chromosome, the chromosome would unravel.

Question 3: 1t. Vaccine

Answer:

A weakened or inactive version of a virus that stimulates the body's production of antibodies which can destroy the virus Question 4: 10. Which is closer to mitosis: meiosis I or meiosis II?

Answer:

Meiosis II: It is essentially mitosis acting on two haploid cells.

Question 5: 6. The diploid number of a cell is 16. What is its haploid number?

Answer:

Diploid number is the total number of chromosomes in the cell. Haploid number is the number of homologous pairs. If there are a total of 16 chromosomes, then there must be 8 pairs. The haploid number is 8.

Question 6: 1e. Gene

Answer:

A section of DNA that codes for the production of a protein or a portion of protein, thereby causing a trait

Question 7: 1m. Haploid cells

Answer:

cells that have only one of each chromosome Question 8: 14. How many useful gametes are produced in meiosis of animal males? What about animal females?

Answer:

Animal males produce 4 useful gametes with each meiosis, while animal females produce only 1.

Question 9: 8. What is the difference between a gamete and a normal cell?

Answer:

A gamete is haploid while a normal cell is diploid. This means that a gamete has only one chromosome from each homologous pair. A normal cell always has both members of each homologous pair.

Question 10: 9. List in order all the stages of meiosis.

Answer:

prophase I, metaphase I, anaphase I, telophase I, prophase II, metaphase II, anaphase II, telophase II.

Question 11: 1p. Meiosis

Answer:

The process by which a diploid (2n) cell forms four gametes (n)

Question 12: 1r. Virus

Answer:

A non-cellular infectious agent that has two characteristics:

1) It has genetic material inside a protective protein coat.2) It cannot reproduce itself.

Question 13: 11. A single cell with 7 pairs of homologous chromosomes goes through meiosis I.How many cells result at the end of meiosisI? How many (total) chromosomes exist in each cell? Are the chromosomes in each cell duplicated or not?

Answer:

In meiosis I, a single diploid cell splits into two haploid cells with duplicated chromosomes. Thus, there are 2 cell. Since they are haploid, they have one chromosome form each pair. Since there are 7 pairs, each cell has 7 chromosomes. Not duplicated.

Question 14: 1n. Diploid chromosome number (2n)

Answer:

The total number of chromosomes in diploid cell

Question 15: 1o. Haploid chromosome number (n)

Answer:

The number of homologous pairs in a diploid cell

Question 16: 1j. Mother cell

Answer:

A cell ready to begin reproduction, containing duplicate DNA and centriole

Question 17: 1a. Genetics

Answer:

The science that studies how characteristics get passed from parent to offspring

Question 18: 17.What is the purpose of the lytic pathway?

Answer:

The lytic pathway is the way in which viruses reproduce, killing the cells of its host.

Question 19: 1l. Diploid cell

Answer:

A cell whose chromosomes come in homologous pairs

Question 20: 1s. Antibodies

Answer:

Specialized proteins that aid in destroying infectious agents

Question 21: 1f. Chromosome

Answer:

A strand of DNA coiled around and supported by proteins, found in the nucleus of the cell

Question 22: 1q. Gametes

Answer:

Haploid cells (n) produced by diploid cells (2n) for the purpose of reproduction

Question 23: 1h. Interphase

Answer:

The time internal between cellular reproduction

Question 24: 1g. Mitosis

Answer:

The duplication of a cell's chromosomes to allow daughter cells to receive the exact genetic makeup of the parent cell

Question 25: 1k. Karyotype

Answer:

The figure produced when the chromosomes of a species during metaphase are arranged according to size

Question 26: 1d. Spiritual factors

Answer:

The quality of a person's relationship with God Question 27: 18. If a virus uses DNA as its genetic material, is it alive? Why or Why not?

Answer:

No virus is alive, because a virus cannot reproduce on its own. A virus also has no means of taking in nutrients and converting them into energy.Question 28: 13. What are gametes produced in animal males called? What are gametes produced in animal females called?

Answer:

Male gametes are called sperm. Female gametes are called eggs.