Homework Answers
Cell membranes perform all the following functions except providing shape and structure to a cell.
Cytoskeleton which is present in the cytoplasm give the cells their shape and it also plays a major role in transporting materials in and out of the cell.
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Cell membranes do all of the following EXCEPT: provide attachments between cells. provide shape and structure...
12. All of the following statements concerning voltaic cells are true EXCEPT a) a salt bridge...
12. All of the following statements concerning voltaic cells are true EXCEPT a) a salt bridge allows cations and anions to move between the half-cells. b) electrons flow from the anode to the cathode in the external circuit. c) oxidation occurs at the cathode. d) a voltaic cell can be used as a source of energy, e) a voltaic cell consists of two-half cells. Answer:
4. Development of organelles Aa Aa 3 Modern eukaryotic cells are very complex and have many...
4. Development of organelles Aa Aa 3 Modern eukaryotic cells are very complex and have many features that allow them to function efficiently. These complexities took a very, very long time to evolve and likely progressed as a series of small improvements that were naturally selected. For example, modern eukaryotic cells have internal membranes surrounding their organelles and the nucleus. This arrangement likely arose when the cellular membranes of some ancient bacterial cells accidentally folded to become internal membranes. Which...
All of the following statements concerning voltaic cells are true EXCEPT O a voltaic cell consists...
All of the following statements concerning voltaic cells are true EXCEPT O a voltaic cell consists of two-half cells. electrons flow from the anode to the cathode. reduction occurs at the cathode. a salt bridge allows only cations to move between the half-cells. in the Zn2+/Zn-Cu/Cu2+ voltaic cell, Zn metal is the anode.
QUESTION 5 are part of the cytoskeleton. They reinforce cell shape and anchor some cell organelles....
QUESTION 5 are part of the cytoskeleton. They reinforce cell shape and anchor some cell organelles. a. Microfilaments 1 point b. Microtubules c. Intermediate Filaments QUESTION 6 Which of the following would NOT be found in a prokaryotic cell? Oa. Nucleus 1 points b. Ribosome c. Capsule Od. Cell Wall QUESTION 7 1 points Sav are found in plants. They are channels between cells that are next to each other, and allow movement of water and sap between the cells....
1. The first line of defense include all of the following except (a) mucous membranes and...
1. The first line of defense include all of the following except (a) mucous membranes and skin (b) Inflammation and fever (c) physical and chemical barriers (d) coughing and sneezing 2. When B cells or T cells recognize an antigen they will eventually make many copies of themselves. Which of the following is the correct order of events? (a) Clonal selection, clonal expansion, clonal deletion (b) clonal expansion, clonal selection, clonal deletion (c) clonal deletion, clonal selection, clonal expansion (d)...
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion...
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion of _________________ hydrocarbon tails, enabling them to stay fluid.For example, cold-adapted organisms such as winter wheat increase the percentage of _________________ phospholipids in their membranes in the autumn to prevent the membranes from solidifying during winter.There are two major populations of membrane proteins: ___________ and _____________.Integral proteins penetrate the hydrophobic interior of the lipid bilayer, usually completely spanning the membrane as ________________ proteins.________________ proteins...
please answer ASAP 1) Which of the following is not a common bacterial shape? A) spirochote...
please answer ASAP
1) Which of the following is not a common bacterial shape? A) spirochote B.COCCIES Cdise Dj bacillas 2) The shape of a bacterial cell is determined and maintained by the A) cell membrane B) cell wall C) capsule D) slime laver 3) Which bacterial genus normally lacks a cell wall? A) Mycobacterium B) Streptococcus C) Mycoplasma D) Bacillus 4) Cell membranes are composed primarily of A) phospholipids and sugars B) teicoic acid and proteins C) phospholipids and...
Question 2 (1 point) All of the following are primary roles of plant epidermal cells EXCEPT:...
Question 2 (1 point) All of the following are primary roles of plant epidermal cells EXCEPT: changing the shaps of cells in response to osmosis capturing Co, and doing photosynthesis regulating the movement of substances in and out of the leaf secreting a waxy cuticle Question 3 (1 point) Assuming the stomata are open to the same degree, the rate of transpiration should on a humid day compared with a dry day because the H2O vapor concentration difference from the...
Question 13 7 pts Which of the following statements accurately describes why an animal cell would...
Question 13 7 pts Which of the following statements accurately describes why an animal cell would be surrounded by an extra cellular matrix instead of a cell wall? Hint: • Extracellular components a video • Textbook chapter 4 under section 4.6 A cell wall would completely isolate the neighboring cells that are found within multicellular organisms, and because of this, it would prevent the ability of those cells to communicate with each other. The polysaccharide cellulose that is found in...
1,Match the descriptions to the type of transport. - A. ...
1,Match the descriptions to the type of transport. - A. B. C. Water enters a cell because it is hypertonic compared to the extracellular environment, increasing its turgor pressure - A. B. C. Water enters guard cells because the guard cells are hypertonic compared to the surrounding cells - A. B. C. Potassium...
12. All of the following statements concerning voltaic cells are true EXCEPT a) a salt bridge allows cations and anions to move between the half-cells. b) electrons flow from the anode to the cathode in the external circuit. c) oxidation occurs at the cathode. d) a voltaic cell can be used as a source of energy, e) a voltaic cell consists of two-half cells. Answer:
4. Development of organelles Aa Aa 3 Modern eukaryotic cells are very complex and have many features that allow them to function efficiently. These complexities took a very, very long time to evolve and likely progressed as a series of small improvements that were naturally selected. For example, modern eukaryotic cells have internal membranes surrounding their organelles and the nucleus. This arrangement likely arose when the cellular membranes of some ancient bacterial cells accidentally folded to become internal membranes. Which...
All of the following statements concerning voltaic cells are true EXCEPT O a voltaic cell consists of two-half cells. electrons flow from the anode to the cathode. reduction occurs at the cathode. a salt bridge allows only cations to move between the half-cells. in the Zn2+/Zn-Cu/Cu2+ voltaic cell, Zn metal is the anode.
QUESTION 5 are part of the cytoskeleton. They reinforce cell shape and anchor some cell organelles. a. Microfilaments 1 point b. Microtubules c. Intermediate Filaments QUESTION 6 Which of the following would NOT be found in a prokaryotic cell? Oa. Nucleus 1 points b. Ribosome c. Capsule Od. Cell Wall QUESTION 7 1 points Sav are found in plants. They are channels between cells that are next to each other, and allow movement of water and sap between the cells....
please answer ASAP
1) Which of the following is not a common bacterial shape? A) spirochote B.COCCIES Cdise Dj bacillas 2) The shape of a bacterial cell is determined and maintained by the A) cell membrane B) cell wall C) capsule D) slime laver 3) Which bacterial genus normally lacks a cell wall? A) Mycobacterium B) Streptococcus C) Mycoplasma D) Bacillus 4) Cell membranes are composed primarily of A) phospholipids and sugars B) teicoic acid and proteins C) phospholipids and...
Question 2 (1 point) All of the following are primary roles of plant epidermal cells EXCEPT: changing the shaps of cells in response to osmosis capturing Co, and doing photosynthesis regulating the movement of substances in and out of the leaf secreting a waxy cuticle Question 3 (1 point) Assuming the stomata are open to the same degree, the rate of transpiration should on a humid day compared with a dry day because the H2O vapor concentration difference from the...
Question 13 7 pts Which of the following statements accurately describes why an animal cell would be surrounded by an extra cellular matrix instead of a cell wall? Hint: • Extracellular components a video • Textbook chapter 4 under section 4.6 A cell wall would completely isolate the neighboring cells that are found within multicellular organisms, and because of this, it would prevent the ability of those cells to communicate with each other. The polysaccharide cellulose that is found in...
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