Homework Answers
E. the centrosome.
The main purpose of a centrosome is to organize microtubules and provide structure for the cell, as well as work to pull chromatids apart during cell division.
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What is the major microtubule-organizing center in interphase animal cells? A. The y-tubulin ring complex B....
63. Incorporating the observation that beta-tubulin binds and hydrolyzes GTP, microtubules undergo catastrophe and rescue, describe...
63. Incorporating the observation that beta-tubulin binds and hydrolyzes GTP, microtubules undergo catastrophe and rescue, describe the molecular mechanisms that account for the dynamic instability behavior of microtubules. 000 О В The cartoon to the left depicts the cross-section of a microtubule doublet as observed in the wall of a cilium. How many tubulin protofilaments are present within a primary cilium? 64. # of protofilaments = When the (+) end of microtubules are in the configuration shown to the left,...
Question 1 of 8 2.0 Points Which of the following statements about the cytoskeleton is false?...
Question 1 of 8 2.0 Points Which of the following statements about the cytoskeleton is false? A. The cytoskeleton is made up of three types of protein filaments. B. The cytoskeleton controls the location of organelles in eukaryotic cells. C. Covalent bonds between protein monomers hold together cytoskeletal filaments. D. The cytoskeleton of a cell can change in response to the environment. Reset Selection Question 2 of 8 2.0 Points Which of the following statements about the function of the...
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...
QUESTION 1 A gene that encodes a protein that stimulates progression of the cell cycle is...
QUESTION 1 A gene that encodes a protein that stimulates progression of the cell cycle is known as a proto-oncogene. True False QUESTION 2 Cytokinesis occurs after which stage or phase of the cell cycle? a. G2 b. S c. G0 d. G1 e. M phase QUESTION 3 During cell-cycle checkpoints, protein kinases known as CDKs phosphorylate target proteins only when they associate with a cyclin. True False QUESTION 4 During mitosis, many of the spindle fibers attach to chromosomes...
Half of a duplicated chromosome cells that have half the normal amount of DNA M To...
Half of a duplicated chromosome cells that have half the normal amount of DNA M To divide, plant cells must form a(n) - Reproduction style used by yeasts Process whereby daughter cells separate themselves A Homologous pair B. Parthenogenesis C. Centriole D. Cytokinesis 5. Spindle fibers F. Cell wall G. Budding H. Genome Cell plate J. Regeneration Vegetative reproduction Making more plants from parts of other plants Term referring to the cell division that bacteria do An organism that produces...
Unit 3 Study Resource Meiosis • Process by which diploid cells create haploid cells NOT part...
Unit 3 Study Resource Meiosis • Process by which diploid cells create haploid cells NOT part of the cell cycle > only some cells ever undergo meiosis During meiosis I, homologous chromosomes line up to allow them to be separated into two new cells o They can become "tangled" during this phase, which leads to crossing-over (rearranging the alleles) O Result of meiosis I is two non-identical haploid cells Meiosis Il looks very similar to mitosis, in that sister chromatids...
15. What is a major difference between Th and Tc cells? A. Tc can bind to...
15. What is a major difference between Th and Tc cells? A. Tc can bind to almost any infected cell; Th only bind infected antigen presenting cells B. Tc mostly secrete cytokines; Th secrete histamine C. Effector Ty cells induce apoptosis; effector Tc cells induce humoral immunity D. TH cells produce B7, but Tc cells produce interleukin-2 E. T cells undergo clonal deletion; Tc undergo clonal expansion 19. Humans with the mutation IL<tmlhor> fail to produce interleukin-2. Which of the...
Please answer both questions. sorry try this please Type 3 mne complex i ty best O...
Please answer both questions.
sorry try this please
Type 3 mne complex i ty best O antibidw i ng in complet activation reginefecto o t de dames e deposition of mallrouble mure complewhich have not been removed by photos, ration by the verorleen C) O cellular damage caused by neutrophilic release of lys enres (D) O All of the above O A B, and D Question 6 0.25 pts This primary immunodeficiency is characterized by the impaired production of major...
please help and thank you Materials Needed per class: 1 box of 24 microscope slides of...
please help and thank you
Materials Needed per class: 1 box of 24 microscope slides of meiosis 1 1 box of 24 microscope slides of meiosis 2 red and yellow popbead chromosome kits Objectives To become familiar with the process of meiosis and to be able to identify the principal phases of meiosis To understand how the process of meiosis is similar to mitosis and how it differs from mitosis Introduction The genetic information of a cell is encoded in...
In multicellular organisms, what do groups of cells form? • A. Prokaryotes • B. Homeostasis •...
In multicellular organisms, what do groups of cells form? • A. Prokaryotes • B. Homeostasis • C. Cell walls • D. Tissues and organs Why do we shiver when it is cold? . A. It is the brain stimulating the person to move to a warmer location. • B. It is a side-effect of the pancreas signaling to the brain that it is losing heat. • C. It is an involuntary reaction that does not actually help our body. •...
63. Incorporating the observation that beta-tubulin binds and hydrolyzes GTP, microtubules undergo catastrophe and rescue, describe the molecular mechanisms that account for the dynamic instability behavior of microtubules. 000 О В The cartoon to the left depicts the cross-section of a microtubule doublet as observed in the wall of a cilium. How many tubulin protofilaments are present within a primary cilium? 64. # of protofilaments = When the (+) end of microtubules are in the configuration shown to the left,...
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...
Half of a duplicated chromosome cells that have half the normal amount of DNA M To divide, plant cells must form a(n) - Reproduction style used by yeasts Process whereby daughter cells separate themselves A Homologous pair B. Parthenogenesis C. Centriole D. Cytokinesis 5. Spindle fibers F. Cell wall G. Budding H. Genome Cell plate J. Regeneration Vegetative reproduction Making more plants from parts of other plants Term referring to the cell division that bacteria do An organism that produces...
Unit 3 Study Resource Meiosis • Process by which diploid cells create haploid cells NOT part of the cell cycle > only some cells ever undergo meiosis During meiosis I, homologous chromosomes line up to allow them to be separated into two new cells o They can become "tangled" during this phase, which leads to crossing-over (rearranging the alleles) O Result of meiosis I is two non-identical haploid cells Meiosis Il looks very similar to mitosis, in that sister chromatids...
15. What is a major difference between Th and Tc cells? A. Tc can bind to almost any infected cell; Th only bind infected antigen presenting cells B. Tc mostly secrete cytokines; Th secrete histamine C. Effector Ty cells induce apoptosis; effector Tc cells induce humoral immunity D. TH cells produce B7, but Tc cells produce interleukin-2 E. T cells undergo clonal deletion; Tc undergo clonal expansion 19. Humans with the mutation IL<tmlhor> fail to produce interleukin-2. Which of the...
Please answer both questions.
sorry try this please
Type 3 mne complex i ty best O antibidw i ng in complet activation reginefecto o t de dames e deposition of mallrouble mure complewhich have not been removed by photos, ration by the verorleen C) O cellular damage caused by neutrophilic release of lys enres (D) O All of the above O A B, and D Question 6 0.25 pts This primary immunodeficiency is characterized by the impaired production of major...
please help and thank you
Materials Needed per class: 1 box of 24 microscope slides of meiosis 1 1 box of 24 microscope slides of meiosis 2 red and yellow popbead chromosome kits Objectives To become familiar with the process of meiosis and to be able to identify the principal phases of meiosis To understand how the process of meiosis is similar to mitosis and how it differs from mitosis Introduction The genetic information of a cell is encoded in...
In multicellular organisms, what do groups of cells form? • A. Prokaryotes • B. Homeostasis • C. Cell walls • D. Tissues and organs Why do we shiver when it is cold? . A. It is the brain stimulating the person to move to a warmer location. • B. It is a side-effect of the pancreas signaling to the brain that it is losing heat. • C. It is an involuntary reaction that does not actually help our body. •...
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