Homework Answers
1. In multicellular organisms, group of cells form Tissue and Organs. So the right option is D.
2. At cold times we shiver because of the involuntary rapid twitching of muscles that tends to generate heat. Hence the right option is D.
3. Receptors are needed for Direct contact or juxtacrine signalling. Hence the right option is A.
4. The primary function of Nucleic Acid is to store and express genetic information. Hence the right option is C.
5. A typical plant cell would have nucleus, mitochondria, cell wall, chloroplast and vacuole. As option D lacks nucleus, the right option is C.
6. Ribosome is the protein making organelle in a cell. Hence the right option is B.
7. The correct option is D.
8. Mitochondria performs cellular respiration to produce energy. Correct option is D.
9. Correct option is C.
10. Active transport move particles against concentration gradient. Hence the right option is B.
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In multicellular organisms, what do groups of cells form? • A. Prokaryotes • B. Homeostasis •...
Question 1 of 10 10 Points Which of the following secretes hormones? • O A. Hypothalamus...
Question 1 of 10 10 Points Which of the following secretes hormones? • O A. Hypothalamus • B. Thyroid • O C. Liver • D. Appendix Reset Selection Signals from the brain and spinal cord going to muscles and glands go through • • • A. Motor neurons B. Sensory neurons C. Hypothalamus • OD. Receptors A junction between neurons through which electrical signals pass through are known as . A. Synapses B. Axons • O C. Neurotransmitter D. Myelin...
37. In the lab cellular processes the dialysis tubing represented what? A. Cell wall B. Capsule...
37. In the lab cellular processes the dialysis tubing represented what? A. Cell wall B. Capsule C. Nucleus D. Plasma membrane E. Ribosome 38. A scientist is studying an unknown cell under the microscope. She observes that the cell has a nucleus, a cell wall, and a large central vacuole. Based on these observations she can conclude that the cell is most likely A. An archaea B. A bacteria cell C. An animal cell D. A plant cell E. A...
2. The endoneurium wraps around groups of fasicles to form a never. True or False? 3....
2. The endoneurium wraps around groups of fasicles to form a never. True or False? 3. The fundamental physiological properties that enable nerve cells are a. the ability to respond to enviromental changes b. the ability to produce electrical signals that are quickly conducted to other cells at distant locations c. the ability to secrete a chemical that will stimulate the next cell when an electrical signal reaches the end of an axon. d. all of these choices are correct...
1. In paracrine signaling, the signaling molecules affects only: Target cells close to the cell from...
1. In paracrine signaling, the signaling molecules affects only: Target cells close to the cell from which it was secreted a. b. Target cells distant from its site of synthesis in cells of an endocrine organ Both a. and b. с. d. None of these 2. Below are listed the events that occur in cell to cell communication. Signal transduction occurs 1. 2. Plasma membrane receptor binds with a ligand A cellular response is effected 3. 4. Ligand is released...
113) Adenosine triphosphate is generated during a) glycolysis b) the krebs cycle c) the electron transport chain re...
113) Adenosine triphosphate is generated during a) glycolysis b) the krebs cycle c) the electron transport chain reaction d) all of the above c) band only 114) During which of the following processes is the greatest amount of ATP produced: Osmosis peptidoglycan synthesis glycolysis electron transport chain reactions lipidolysis 115) The site of the bacterial cell where ATP is produced is the cell wall cell membrane mitochondria nuclear region bande 116) ATP syhtnase: c) is the enzyme the breaks down...
Chapter 4: A Tour of the Cell 5. Smooth endoplasmic reticulum (SER) lacks _, which gives...
Chapter 4: A Tour of the Cell 5. Smooth endoplasmic reticulum (SER) lacks _, which gives it a "smooth" appearance. 6. True or false: If false, make it a correct statement. The smooth endoplasmic reticulum con- tains many enzymes that allow it perform functions like detoxify circulating drugs. 7. Use Figures 4.14 (page 65 of your textbook) and 4.17 (page 67 of your textbook) to answer the following question. Place the following steps in the order in which they occur...
1. which is not a factor affecting membrane transport of a molecule? a. molecular size b....
1. which is not a factor affecting membrane transport of a molecule? a. molecular size b. lipid solubility c. its role in homeostasis d. concentration of the molecule 2. True or false: In allosteric enzyme inhibition, the active site is blocked by another molecule 3. Thyroxine (t4) is synthesized from the amino acid called tyrosine, therefore it belongs to the category of hormones called_____. however, since t4 is a ______ hormone, it utilizes an itracellular receptor mechanism. a. steroids; lipid-soluble...
Q13 Cyanide is a deadly poison that attaches to cytochrome c oxidase, the last protein in...
Q13 Cyanide is a deadly poison that attaches to cytochrome c oxidase, the last protein in the electron transport chain before the terminal electron acceptor. Based on your knowledge of the electron transport chain, which statement below best describes the action of cyanide on the body? A. Cyanide does not allow the Krebs cycle to be completed by blocking acetyl CoA from entering this cycle. This action shuts down the entire process of cellular metabolism. B. Cyanide does not allow...
in cardiac 5. Cell-cell communication junctions in plants are called and muscle cells (animal). A. plasmodesmata,...
in cardiac 5. Cell-cell communication junctions in plants are called and muscle cells (animal). A. plasmodesmata, anchoring junction B. plasmodesmata gap junction C. stomata; anchoring junction D. stomata; conjunction junction Estomata; gap junction 6. Actin is found in A. cellulose B. intermediate filament C.microfilament D. microtubule E. cristae 7. Based on the endosymbiont theory which was once a free living prokaryote? A. nucleus B. Golgi C. Mitochondria D. rough endoplasmic reticulum E. B and D 8. Active transport A. occurs...
9. Analyze the diagram below of a nuclear response for gene expression: Which of the following...
9. Analyze the diagram below of a nuclear response for gene
expression:
Which of the following is this cell using to control all of the
other events to regulate gene expression?
a. phosphate bonded to a transcription factor
b. phosphorylation cascade with multiple steps
c. specific hormone that initiates a response
d. transcription housed outside of the nucleus
10. Below is a model of a signal transduction pathway that results
in the transcribing of mRNA:
Referencing the model, what...
Question 1 of 10 10 Points Which of the following secretes hormones? • O A. Hypothalamus • B. Thyroid • O C. Liver • D. Appendix Reset Selection Signals from the brain and spinal cord going to muscles and glands go through • • • A. Motor neurons B. Sensory neurons C. Hypothalamus • OD. Receptors A junction between neurons through which electrical signals pass through are known as . A. Synapses B. Axons • O C. Neurotransmitter D. Myelin...
37. In the lab cellular processes the dialysis tubing represented what? A. Cell wall B. Capsule C. Nucleus D. Plasma membrane E. Ribosome 38. A scientist is studying an unknown cell under the microscope. She observes that the cell has a nucleus, a cell wall, and a large central vacuole. Based on these observations she can conclude that the cell is most likely A. An archaea B. A bacteria cell C. An animal cell D. A plant cell E. A...
1. In paracrine signaling, the signaling molecules affects only: Target cells close to the cell from which it was secreted a. b. Target cells distant from its site of synthesis in cells of an endocrine organ Both a. and b. с. d. None of these 2. Below are listed the events that occur in cell to cell communication. Signal transduction occurs 1. 2. Plasma membrane receptor binds with a ligand A cellular response is effected 3. 4. Ligand is released...
113) Adenosine triphosphate is generated during a) glycolysis b) the krebs cycle c) the electron transport chain reaction d) all of the above c) band only 114) During which of the following processes is the greatest amount of ATP produced: Osmosis peptidoglycan synthesis glycolysis electron transport chain reactions lipidolysis 115) The site of the bacterial cell where ATP is produced is the cell wall cell membrane mitochondria nuclear region bande 116) ATP syhtnase: c) is the enzyme the breaks down...
Chapter 4: A Tour of the Cell 5. Smooth endoplasmic reticulum (SER) lacks _, which gives it a "smooth" appearance. 6. True or false: If false, make it a correct statement. The smooth endoplasmic reticulum con- tains many enzymes that allow it perform functions like detoxify circulating drugs. 7. Use Figures 4.14 (page 65 of your textbook) and 4.17 (page 67 of your textbook) to answer the following question. Place the following steps in the order in which they occur...
in cardiac 5. Cell-cell communication junctions in plants are called and muscle cells (animal). A. plasmodesmata, anchoring junction B. plasmodesmata gap junction C. stomata; anchoring junction D. stomata; conjunction junction Estomata; gap junction 6. Actin is found in A. cellulose B. intermediate filament C.microfilament D. microtubule E. cristae 7. Based on the endosymbiont theory which was once a free living prokaryote? A. nucleus B. Golgi C. Mitochondria D. rough endoplasmic reticulum E. B and D 8. Active transport A. occurs...
9. Analyze the diagram below of a nuclear response for gene
expression:
Which of the following is this cell using to control all of the
other events to regulate gene expression?
a. phosphate bonded to a transcription factor
b. phosphorylation cascade with multiple steps
c. specific hormone that initiates a response
d. transcription housed outside of the nucleus
10. Below is a model of a signal transduction pathway that results
in the transcribing of mRNA:
Referencing the model, what...
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