Homework Answers
6. X-ray that are most useful for enhancing differential absorption in breast tissue and for maximizing radiographic constrast are in the range of 19keV - 21kev.
7. For cells that undergo mitosis, the period of the cell cycle between mitotic events is termed Interphase.
Interphase is the longest part of the cell cycle. This is when the cell grows and copies its DNA before moving into mitosis. During mitosis, chromosomes will align, separate, and move into new daughter cells. The prefix 'inter' means between, so interphase takes place between one mitotic phase and the next.
8. G2-phase and mitosis (M-phase) cells.
the most sensitive cells are those that are undifferentiated, well nourished, dividing quickly and highly active metabolically. Amongst the body cells, the most sensitive are spermatogonia and erythroblasts, epidermal stem cells, gastrointestinal stem cells.
9. S phase.
10. M phase
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5. The molecular composition of the human body is 80% which explains why formation of hydroxyl...
• In the cell, DNA is duplicated in the G1 phase S phase G2 phase Division...
• In the cell, DNA is duplicated in the G1 phase S phase G2 phase Division stage Which of the following statements is true? Chromatin is more compacted in prophase than during the G2 phase The key even of Sphase is the segregation of sister chromatids • • The mitotic spindle first appears during anaphase The cell increases in size during metaphase Which of the following correctly represents the order of the phases in the cell cycle? Mitosis, S phase,...
1. The molecular composition of the human body is 80% _______ which explains why formation of...
1. The molecular composition of the human body is 80% _______ which explains why formation of hydroxyl radicals are so important to producing radiation effects in the body. 2. Name the four “generations” of technology that computed tomographic (CT) imaging systems have undergone. Using your imagination, what do you think the next or “fifth” generation of CT imaging systems will be like? and indicate briefly what distinguished each generation from the others. 3. Give two examples of poor image quality...
Please Help Question 1: Part A: Chromosomal DNA is duplicated during the phase of the cell...
Please Help
Question 1: Part A: Chromosomal DNA is duplicated during the phase of the cell cycle. a) G1 b) G2 c) Mitotic d) S Part B: Sister chromatids separate from one another during mitosis in.. a) Anaphase b) Metaphase c) Prophase d) Telophase Part C: Cells move automatically through the G1, S, G), and M phases of the cell cycle. However, movement through the cycle is also controlled at various _by internal and external factors that can either push...
In animal cells, a characteristic feature during cytokinesis is the formation of something called the (26),...
In animal cells, a characteristic feature during cytokinesis is the formation of something called the (26), while in plants a characteristic feature that forms is the Prokaryotes do not have a nucleus, and so they do not perform their chromosome and divide with a process known as (28), and simply duplicate Different cells divide at different rates because they vary with respect to regulation of their (30) . This "internal clock" has specific 031) that essentially signal the cell to...
Part C: Mitosis the body nceds more cells (for growth or repair), the way to produce...
Part C: Mitosis the body nceds more cells (for growth or repair), the way to produce new ones is for existing cells to divide. The series of events that leads to cell division is called the cell cycle. The cell cycle has distinct phases-most of the time, a cell is in itself is divided into three phases: Gl, in which a cell is engaged in the normal activity of thar cell making protcin, gencrating ATT, etc.l; S, the phase when...
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 1: Part A: Match the name of each stage in parent ce - - Stage...
Question 1: Part A: Match the name of each stage in parent ce - - Stage 1 Stage 2 Stage 3 A. Cytokinesis 8 G C. G2 Moss - Stage 5 Part b Name the cell cycle stage in which each event takes place. Each answer choice is used once and only once - Each chromosome is duplicated. - The cell divides into two daughter cells. A. Cytokinesis CA Cell contents, except for chromosomes, are duplicated. B. G1 Chromatids are...
Cells in the most adult bodis are in the restin state known as G0 phase. When...
Cells in the most adult bodis are in the restin state known as G0 phase. When can G0 phase be induced? Points: 1 Any time in the cell cycle. During G2 phase. During the mitotic phase. During the G1 phase. During S phase. The Gap 1, DNA synthesis, and Gap 2 phases of the cell cycle are collectively called Points: 1 prophase. interphase. prephase. mitosis. anaphase. Which of the following can produce an XYY individual after fertilization? Points: 1 Nondisjunction...
Question 16 (5 points) Which of the following molecular structures contain codons? Question 16 options: a...
Question 16 (5 points) Which of the following molecular structures contain codons? Question 16 options: a protein tRNA rRNA mRNA Question 17 (5 points) Once researchers identified DNA as the molecule responsible for transmitting heritable traits, they asked how information was transferred from the DNA in the nucleus to the site of protein synthesis in the cytoplasm. Which of the following statements correctly describes the mechanism of information transfer in eukaryotes that accomplishes this task? Question 17 options: DNA from...
QUESTION 13 Which of the following would occur if a mutation caused Kinase 1 to be...
QUESTION 13
Which of the following would occur if a mutation caused Kinase 1
to be unable to be phosphorylated? (Select all)
RTK would bind VEGF
RTK would phosphorylate itself
RAS would become active
The phosphorylation cascade would occur
The endothelial cell would divide
0.2 points
QUESTION 14
Imagine that an endothelial cell has a mutation in several of
the enzymes that perform mismatch repair. The endothelial cell
replicates its DNA and then divides into two cells. The resulting...
• In the cell, DNA is duplicated in the G1 phase S phase G2 phase Division stage Which of the following statements is true? Chromatin is more compacted in prophase than during the G2 phase The key even of Sphase is the segregation of sister chromatids • • The mitotic spindle first appears during anaphase The cell increases in size during metaphase Which of the following correctly represents the order of the phases in the cell cycle? Mitosis, S phase,...
Please Help
Question 1: Part A: Chromosomal DNA is duplicated during the phase of the cell cycle. a) G1 b) G2 c) Mitotic d) S Part B: Sister chromatids separate from one another during mitosis in.. a) Anaphase b) Metaphase c) Prophase d) Telophase Part C: Cells move automatically through the G1, S, G), and M phases of the cell cycle. However, movement through the cycle is also controlled at various _by internal and external factors that can either push...
In animal cells, a characteristic feature during cytokinesis is the formation of something called the (26), while in plants a characteristic feature that forms is the Prokaryotes do not have a nucleus, and so they do not perform their chromosome and divide with a process known as (28), and simply duplicate Different cells divide at different rates because they vary with respect to regulation of their (30) . This "internal clock" has specific 031) that essentially signal the cell to...
Part C: Mitosis the body nceds more cells (for growth or repair), the way to produce new ones is for existing cells to divide. The series of events that leads to cell division is called the cell cycle. The cell cycle has distinct phases-most of the time, a cell is in itself is divided into three phases: Gl, in which a cell is engaged in the normal activity of thar cell making protcin, gencrating ATT, etc.l; S, the phase when...
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 1: Part A: Match the name of each stage in parent ce - - Stage 1 Stage 2 Stage 3 A. Cytokinesis 8 G C. G2 Moss - Stage 5 Part b Name the cell cycle stage in which each event takes place. Each answer choice is used once and only once - Each chromosome is duplicated. - The cell divides into two daughter cells. A. Cytokinesis CA Cell contents, except for chromosomes, are duplicated. B. G1 Chromatids are...
Question 16 (5 points) Which of the following molecular structures contain codons? Question 16 options: a protein tRNA rRNA mRNA Question 17 (5 points) Once researchers identified DNA as the molecule responsible for transmitting heritable traits, they asked how information was transferred from the DNA in the nucleus to the site of protein synthesis in the cytoplasm. Which of the following statements correctly describes the mechanism of information transfer in eukaryotes that accomplishes this task? Question 17 options: DNA from...
QUESTION 13
Which of the following would occur if a mutation caused Kinase 1
to be unable to be phosphorylated? (Select all)
RTK would bind VEGF
RTK would phosphorylate itself
RAS would become active
The phosphorylation cascade would occur
The endothelial cell would divide
0.2 points
QUESTION 14
Imagine that an endothelial cell has a mutation in several of
the enzymes that perform mismatch repair. The endothelial cell
replicates its DNA and then divides into two cells. The resulting...
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