this question on cell biology 4th edition chapter 20
1 describe cell polarity?
2 describe the role of: tight junction, adherent junctions, desmosomes, gap junctions?
3 describe stem cell?
4 describe pluripotent cells?
5 what are iPS cells- how are they formed?
Ans 1. Spatial differences of shape, structure and function within a cell .
Ans 2 . Tight junction hold cells together. Gap junction connects cytoplasm of two cell so that small molecules can be transporter.
Ans 3. Cells that differentiate into other types of cells and can divide in self renewal to produce same type of cells.
Ans 4.embryonic stem cells are calles pluripotent cell that can give rise to all cells that can make the body
this question on cell biology 4th edition chapter 20 1 describe cell polarity? 2 describe the...
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Question 47 2 pts Neural crest cells are now known to be able to differentiate in to cells. None of the options shown. ectoderm All of the options shown mesoderm endoderm Question 42 2 pts Induced pluripotent stem (iPS) cells can be created by the expression of a set of key genes in most somatic cell types, including cells derived from adult tissues. O require a supply of donor egg cells, as is the case for embryonic...
What are Animals? 1. List and briefly describe the defining features of animals. Be sure you understand these terms: eukaryote, heterotrophic, multicellular 2. Clearly show how the set of features listed in your answer to question 1 distinguishes animals from bacteria, fungi, plants and protists. 3. Describe the characteristics of true multicellularity in animals. Your answer should include: collagen (what is it, what does it do, etc.), gap junctions vs tight junctions, cell differentiation, totipotency and more. 4. To what...
HW - Chapter 4: Biology of the Cell Question 2 (of 35) 2. value 2.85 points Select all that are true of the resting membrane potential. It occurs when electrical charges across a membrane neutralize each other, so there is no charge difference. It involves sodium and potassium No energy expenditure is necessary to maintain a resting membrane potential The sodium-potassium pump is required. References
Elementary Principles of Chemical Processes, 4th edition, Chapter 4, question 89 an unknown paraffinic hydrocarbon is defineed by the chemical formula CxH2x+2. the paraffin is burned with air and there is no CO in the combustion products. A) use a degree of freedom analysis to determine how many variable must be specified to determine the flowrates of all components enetering and leaving the combustion unit. express the fraction excess air as Y and write element balances in terms of X,...
1) The approximate cell yield of a T25 flask (for adherent cells) is 2.8 x 106 cells. The cell yield is the total amount of adherent cells at confluence. How many adherent cells would you expect to be in this flask at 80% confluence? 2) For adherent cells, the seeding density is usually between what range of % confluencies? 3) How many total cells would you place in a T75 flask with a cell yield of 8.4 x 106 cells...
Questions: 1.) Describe the cell cycle for plant cells. 2.) Describe the cell cycle for animal cells. 3.) Describe the mitotic process 4.) Calculate the mitotic index for onion root tip cells. s spend in mitosis. 5.) Calculate the time that onion root tips cell
Biology 108 Laboratory Manual: Fourth Edition.
Follow-Up Questions for Chapter 5 (pg. 87-88)
1. Are sister chromatids identical anymore after crossing over? Explain. 2. Could a karyotype determine if a person will have brown hair?! 3. Why is it so problematic if nondisjunction occurs during meiosis? Think of what would result. 4. You isolate a cell from the liver of a lab animal. After running a diagnostic test, you dis- cover there are 18 chromosomes in the cell. How many...
Textbook: Modern Management concepts and skills (14th edition) Chapter 5 Question 5-3 Describe the relationship between planning and the other general functions of management (organizing, controlling, and influencing). In your opinion, which of the four functions is most important? and why? Help me this question in detail.
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Reflection-6a:Chapter 25 & 26 Name: Chapter 25: Overview of Physiology: 1. Match the following definitions to the terms they describe (Physiology organ/tissue organ system Anafy) An organized collection of one cell type working to carry out a specific function A structure made up of various tissue types working together to carry out a common function A set of cooperating organs that work together to perform a specific function The study of the way a living...
Question 5 Speaking of mitochondria. Get your cell biology textbook and review how mitochondria generate ATP. Then consider - some researchers though they had found a wonder diet drug when they discovered molecules that increased the basal metabolic rate by allowing protons to leak across the inner mitochondrial membrane. A) Describe how these drugs would cause an increase in the basal metabolic rate (that is, the cells are burning more ‘food’ but the organism isn’t doing more ‘work’). B) What...