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- If a scientist drops an animal cell into a solution that contains 10 times more salt than is found inside the cell, which of the following will happen? Hint: drawing a picture may help you. A) The cell will burst since the solution is hypertonic B) The cell will shrink since the solution is hypotonic. C) The cell will burst since the solution is hypotonic. D) The cell will shrink since the solution is hypertonic. E) The cell will not change in size since the solution is isotonic.A cell contains 97% water and it is placed in a 5% salt solution. a) Which contains a higher concentration of water? i) cytoplasm of the cell ii) salt solution b) Which contains a higher concentration of solutes? i) cytoplasm of the cell ii) salt solution c) Cell membranes are selectively permeable, so which of the substances will move across it? i) water ii) salt iii) both water and salt iv) none d) What will happen to the volume of the cell? i) increase ii) decrease iii) stay the same i need help on this hw question. i tried it on my own but im not too sure if it's correct. the following are what i think the answers are: a) cytoplasm of the cell b) salt solution c) water d) decrease it would be helpful if you can confirm my answers and explain what i did wrong, thank you!A cell membrane with no proteins will still show which process? a) active transport b) facilitated diffusion c) osmosis d) None of these
- Which term best describes the following scenario: Calcium ions travel through the cell membrane into the cell, using an integral protein. There is a higher concentration of calcium in the cell. A) Diffusion/Passive transport B) Facilitated diffusion C) Active transport D) Fluid mosaic model E) All terms in this list are correctA) Describe in as much detail as you can, the fluid mosaic model of a cellular membrane. B) What is special about the phospholipid in the cell membrane? C) Name four components of the fluid mosaic model and their function in the membrane.If magnesium ions are in higher concentration outside the cell, they would move into the cell by the process of: a) facilitated diffusion through a carrier protein b) osmosis c) secondary active transport d) facilitated diffusion through a channel protein e) exocytosis f) simple diffusion g) primary active transport
- The hydrophobic interior of the cell membrane is created by O O a) peripheral proteins b) phospholipids heads c) integral proteins d) glycoproteins e) phospholipids tailsWhen a Prokaryote or Eukaryotic cell is placed in an aqueous (water) solution containing K+ and Na+ ions, one would expect that a) the membrane protein pump would transport water b) the cell would swim away c) H2O would dissolve the membrane d) lipids would diffuse in and out of the cell through special membrane proteins e) K+ would be moved into the cell and Na+ would be moved outside of the cell membrane by special active transport proteins.1) All of the following are functions of proteins within a membrane except __________. A)Maintaining the fluidity of membranes B)transport ions and other polar substances C)receptors to bond molecules outside of the cell D)helping the body to recognize its own cells 2) Which of the following organelles is not part of the endomembrane system A)mitochondria B)golgi apparatus C)lysosomes D)rough endoplasmic reticulum 3) Which cytoskeletal element is composed of actin and is involved with muscle contraction and provided strength to cells during stretching and compression? A)Microfilimants B)Intermediate filaments C)Microtubules D)Flagella
- Which of the following is not a function of cytoskeleton in a cell ? A) Maintenance of cell shape and structure B) Intracellular transport C) Cell motility D) Support of the organelleEndocytosis results in the production of a) a vesicle with a single membrane b) an organelle with enzymes. c) a vesicle with a double membrane . 15 d) lipids for the plasma membrane. e) fibers for transporing organellesChoose the correct answer from the following 1- The cell membrane is considered semipermeable because: a) It allows the passage of all substances b) It allows the passage of only water c) It allows the passage of some substances while restricting others d) It does not allow the passage of any substances 2- The lipid layer of the cell membrane is mainly composed of: a) Proteins b) Carbohydrates c) Phospholipids d) Cholesterol 3- Integral proteins in the cell membrane: a) Are loosely bound and easily dissociate from the membrane b) pass through the entire thickness of the cell membrane c) Are responsible for the attachment of cells to their neighbors d) Serve as receptor sites for hormones and neurotransmitters 4- The fluid mosaic model of the cell membrane suggests that: a) The membrane is a solid structure with layers of proteins b) The membrane is a fluid with proteins floating within it c) The membrane is composed entirely of lipids