The diagram below describes: A) How the pumping of sodium ions out of the cell can power the transport of glucose into the cell. B) Two types of active transport C) A symporter D) a and b only E) a, b, and c

What integral membrane protein family made of two membrane-spanning chains (α and β) is involved in attaching cells to their extracellular microenvironment? a)     lamininsb)     fibronectinsc)     integrinsd)     myosinse)     lysins

15- Which organelle is known as the "powerhouse" of the cell due to its role in producing energy? a) Nucleus b) Lysosome c) Vacuole d) Mitochondria 16- What is the function of ribosomes in a cell? a) Storage of genetic information b) Synthesis of proteins c) Breakdown of waste materials. d) Synthesis of lipids 17- Which of the following is NOT a function of the nucleus in a cell? a) Storage of genetic information b) Control of cell activities c) Synthesis of proteins d) Reproduction of the cell 18- Which organelle is responsible for packaging and sorting proteins for transport within the cell or secretion outside the cell? a) Endoplasmic reticulum b) Nucleus c) Golgi apparatus d) Vacuole 19- What is the function of the cytoskeleton in a cell? a) Cellular respiration b) Cellular communication c) Cell division. d) Structural support and cell movement

The following table depicts the rate of transport of a molecule into a cell as the external concentrations are changed. Based on what you know about the characteristics of membrane transport, the molecule is most likely transported by: a) passive transport b) simple diffusion across the membrane c) facilitated diffusion d) active transport

Filaments connected to the dense plaque underlying the membrane in a desmosome course outward into the cytoplasm. These filaments are composed of the protein _____ and are otherwise known as ______. a)     actin, microfilamentsb)     keratin, microfilamentsc)     actin, intermediate filamentsd)     keratin, intermediate filamentse)     tubulin, intermediate filaments

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) Give the two main membrane proteins.b) State a function each of the mentioned protins. c) Explain why change in pH can affect the function of the proteins.

Q48

The Amoeba, the paramecium, and the euglena ( These are unicellular Protozoans) produce electrical impulses that travel along their cell membrane. This is possible because they are specialized to use properties exhibited by all cells. These properties include ... A) Separation of the fluid environments inside and outside the cell B) Active transport of Na+ out of and K+ into the cell. C) Portal proteins that allow diffusion of Na+ and K+ back in to the cell D) Maintaining unequal Na+ and K+ concentrations on the two sides of the membrane. E) All of these are true Explain why

The role of the integral protein is to a) Create a barrier b) allow ions into the cell c) maintain fluidity at low tempe d) recognize cell is safe