Homework Answers
Answer: The following statements are true for Aschelminthes.
- There is a fixed number of somatic cells at maturity.
- Cell constancy is at the organ and organismal level.
- Further adult growth is by cell enlargement.
Explanation: Phylum Aschelminthes has pseudocoelom as the body cavity. Generally the body cavity is triploblastic,bilaterally symmetrical and unsegmented. Body size is generally small.
Eutely is the phenomenon exhibited by many species of Aschelminthes. Eutely means invariant and genetically fixed number of cells. In these organisms, mitosis stops(adult growth is not by mitosis) after embryonic development and growth is observed only through increase in the size of the cell(cell enlargement)
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Question 1 (1 point) Which of the following are true concerning eutely in the aschelminthes? (select...
Question 4 9 pts Select all of the following statements that are true concerning the daughter...
Question 4 9 pts Select all of the following statements that are true concerning the daughter cells of meiosis: Hint: • Overview of Meiosis e video Compare Mitosis and Meiosis e video • Textbook chapter 11 section 11.1 The daughter cells are genetically identical to each other, but genetically different from the original parent cell. The daughter cells contain replicated chromosomes. Each daughter cell has half as many chromosomes as the original parent cell Each daughter cell only contains one...
Question 4 1 pt Which of the following is true of B cells (select ALL that...
Question 4 1 pt Which of the following is true of B cells (select ALL that apply): born in the bone marrow O can differentiate into plasma cells some types can directly kill a target cell mature in the bone marrow born in the thymus mature in the thymus make antibodies can differentiate into memory cells are considered "antigen-presenting" cells Question 5 1 pts B cell activation requires (select ALL that apply): antiren binding to antibody on B cell surface
? Select that apply. which of the following statements are true concerning cystic fibrosis way and...
? Select that apply. which of the following statements are true concerning cystic fibrosis way and d ate gas is a chronic condition afecting the endocrine andis A focus of respiratory management is maintaining a patent The C a ve an inadequate and inchective CFT is performed three to four times per day. Increased secrecions sene as an excellent media for bacterial growth The leading cause of hospitalization related to is respiratory infection which of the following statements are true...
Question 1 Which of the following statements is true? Promoter bashing can lead to increased DNA...
Question 1 Which of the following statements is true? Promoter bashing can lead to increased DNA methylation. Methyl groups are removed from the DNA by DNA methyltransferase. ODNA methylation is directly passed on during meisos to all daughter cells. Monoallelic gene expression occurs when a mutation results in dominant gene expression. Patterns of DNA methylation are preserved in somatic cells following mitosis.
Which of the following statements is/are true about meiosis? Select all that apply. Meiosis produces growth...
Which of the following statements is/are true about meiosis? Select all that apply. Meiosis produces growth in humans. Meiosis produces gametes Meiosis produces four haploid cells Meiosis produces two diploid cells. Melosis produces nonidentical cells. The daughter cells of meiosis have half as many chromosomes as the parent cell
Which of the following is the result of meiosis? (Select all that apply) A The production...
Which of the following is the result of meiosis? (Select all that apply) A The production of four genetically identical daughter cells B. The production of four genetically different daughter cels C. No change in chromosome number from the parent cel D. A doubling of the chromosome number E. A reduction in the chromosome number by haif 13. Mitosis and cytokinesis function in which of the following? (Select all that apply) A. Asexual reproduction in unicellular eukaryotic organisms B. Gamete...
Quession 14 Which statement about mitosis is true? Select one a. DNA replication is completed in...
Quession 14 Which statement about mitosis is true? Select one a. DNA replication is completed in prophase. b. The chromosome number in the resulting cells is halved c. Two genetically identical daughter cells are formed. d Crossing over occurs during prophase e. It consists of two nuclear divisions. Quession 15 How does a nucleus in G2 difler from a nucleus in G17 Select one a. DNA synthesis occurs only in G1 phase. b Inactive cells are arrested only in G2...
Question 7 (2 points) Which of the following is true concerning cancer cells?! They stop dividing...
Question 7 (2 points) Which of the following is true concerning cancer cells?! They stop dividing in culture when growth factors are depleted. They evade the normal controls that trigger programmed cell death. They exhibit density-dependent inhibition when growing in culture. They must be attached to a substrate to divide in culture. Question 8 (2 points) Taxol is an anticancer drug extracted from the Pacific yew tree that binds to microtubules and prevents their depolymerization. Actively dividing cells treated x...
the other chambers? (2 points) 7) Select all of the following that are functions of the...
the other chambers? (2 points) 7) Select all of the following that are functions of the accessory glands of the male reproductive system. (2 points) A) Spermatocyte creation B) Supplying nutrients for gamete motility C) Moving fluids along the reproductive tract D) Buffer production E) Hormone secretion for fertility regulation 8) Which of the following could be issues caused by dysfunctional interstitial cells of the testes in an adult male? Select all that apply. (2 points) A) Low sperm cell...
QUESTION 1 A cell divides by mitosis. The result is: A. diploid gametes. B. two identical...
QUESTION 1 A cell divides by mitosis. The result is: A. diploid gametes. B. two identical daughter cells. C. haploid gametes. D.four identical daughter cells. E. somatic cells with a unique collection of alleles. QUESTION 2 line of the DNA it did during prophase I. During metaphase Il in meiosis, a cell contains i A. twice as much B. 1/2 OC. 1/4 D.four times as much E. the same amount QUESTION 3 A cell spends the majority of its time...
Question 4 9 pts Select all of the following statements that are true concerning the daughter cells of meiosis: Hint: • Overview of Meiosis e video Compare Mitosis and Meiosis e video • Textbook chapter 11 section 11.1 The daughter cells are genetically identical to each other, but genetically different from the original parent cell. The daughter cells contain replicated chromosomes. Each daughter cell has half as many chromosomes as the original parent cell Each daughter cell only contains one...
Question 4 1 pt Which of the following is true of B cells (select ALL that apply): born in the bone marrow O can differentiate into plasma cells some types can directly kill a target cell mature in the bone marrow born in the thymus mature in the thymus make antibodies can differentiate into memory cells are considered "antigen-presenting" cells Question 5 1 pts B cell activation requires (select ALL that apply): antiren binding to antibody on B cell surface
? Select that apply. which of the following statements are true concerning cystic fibrosis way and d ate gas is a chronic condition afecting the endocrine andis A focus of respiratory management is maintaining a patent The C a ve an inadequate and inchective CFT is performed three to four times per day. Increased secrecions sene as an excellent media for bacterial growth The leading cause of hospitalization related to is respiratory infection which of the following statements are true...
Question 1 Which of the following statements is true? Promoter bashing can lead to increased DNA methylation. Methyl groups are removed from the DNA by DNA methyltransferase. ODNA methylation is directly passed on during meisos to all daughter cells. Monoallelic gene expression occurs when a mutation results in dominant gene expression. Patterns of DNA methylation are preserved in somatic cells following mitosis.
Which of the following statements is/are true about meiosis? Select all that apply. Meiosis produces growth in humans. Meiosis produces gametes Meiosis produces four haploid cells Meiosis produces two diploid cells. Melosis produces nonidentical cells. The daughter cells of meiosis have half as many chromosomes as the parent cell
Which of the following is the result of meiosis? (Select all that apply) A The production of four genetically identical daughter cells B. The production of four genetically different daughter cels C. No change in chromosome number from the parent cel D. A doubling of the chromosome number E. A reduction in the chromosome number by haif 13. Mitosis and cytokinesis function in which of the following? (Select all that apply) A. Asexual reproduction in unicellular eukaryotic organisms B. Gamete...
Quession 14 Which statement about mitosis is true? Select one a. DNA replication is completed in prophase. b. The chromosome number in the resulting cells is halved c. Two genetically identical daughter cells are formed. d Crossing over occurs during prophase e. It consists of two nuclear divisions. Quession 15 How does a nucleus in G2 difler from a nucleus in G17 Select one a. DNA synthesis occurs only in G1 phase. b Inactive cells are arrested only in G2...
Question 7 (2 points) Which of the following is true concerning cancer cells?! They stop dividing in culture when growth factors are depleted. They evade the normal controls that trigger programmed cell death. They exhibit density-dependent inhibition when growing in culture. They must be attached to a substrate to divide in culture. Question 8 (2 points) Taxol is an anticancer drug extracted from the Pacific yew tree that binds to microtubules and prevents their depolymerization. Actively dividing cells treated x...
the other chambers? (2 points) 7) Select all of the following that are functions of the accessory glands of the male reproductive system. (2 points) A) Spermatocyte creation B) Supplying nutrients for gamete motility C) Moving fluids along the reproductive tract D) Buffer production E) Hormone secretion for fertility regulation 8) Which of the following could be issues caused by dysfunctional interstitial cells of the testes in an adult male? Select all that apply. (2 points) A) Low sperm cell...
QUESTION 1 A cell divides by mitosis. The result is: A. diploid gametes. B. two identical daughter cells. C. haploid gametes. D.four identical daughter cells. E. somatic cells with a unique collection of alleles. QUESTION 2 line of the DNA it did during prophase I. During metaphase Il in meiosis, a cell contains i A. twice as much B. 1/2 OC. 1/4 D.four times as much E. the same amount QUESTION 3 A cell spends the majority of its time...
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