
Questions C and 3. C.)If phospholipids must occupy at least 25% of the membrane surface, which...
2. Consider four spherical cells with the diameters given in the table below. Based on estimates from the scientific literature, the cytoplasm in cells can require 100,000 molecules of glucose per per second. These cells use a protein on the cell surface called the glucose transporter (Glu) to transport glucose from the outside of the cell into the cytoplasm. Scientific measurements indicate that under normal conditions each Glutr has a transport rate capacity of around 400 molecules per second. Each...
_____membranes proteins are associated with the bilayer through interactions with other membrane component on the surface of the membrane. Net movement of particles from a region where they are more concentrated to a region where they are law concentrated is called Diffusion of water through a selectively permeable membrane down its own concentration gradient It called A solution with an equivalent concentration of water and hence the tame osmotic pressure as the fluid inside the cell is said to be...
LIPID AND MEMBRANE QUESTIONS 1. If an unsaturated fatty acid has 18 carbons, a double bond at position would be in notation - 2. The functional groups which hold fatty acid molecules and glycerol molecules together in triacylglecerol molecules are called: 3. If a triacylglycerol is heated in aqueous sodium hydroxide (lye) solution glycerol and the sodium salts of fatty acids are produced. This mixture of sodium salts of fatty acids is called in common terminology 4. Name the four...
LABORATORY REPORT QUESTIONS EXERCISE 3 Name Date Laboratory Section Score/Grade PART 1 - Multiple Choice - 1. The portion of the cell that forms part of the mitotic spindle during division is the (a) endoplasmic reticulum (b) Golgi complex (c) cytoplasm (d) pericentriolar area of the centrosome 2. Movement of molecules or ions from a region of higher concentration to a region of lower concentration via a process that does not require cellular energy is called (a) phagocytosis (b) diffusion...
please explain steps and show work
no pictures were provided. table 3.13 is given above.
3.46 The cell membrane is covered with protein complexes called Na-K+ pumps. Each pump moves 3 Nations from the intracellular space to the extracellular milieu for every 2 K ions it moves into the cell. During normal function, the pumps work constantly. Under normal conditions, there is a gradient of Nat and K ions between the cell and the extracellular space; the concentrations of these...
B. The plasma memibrane buds off exosomes from the surface C. They come from the nucleus theough the D. Specialized vesicles from E. Late endosomes fuse from the surface mitochondria bud off and are secreted with the plasma membrane and release their content is a minus end directed motor on microtubules A. Dynein B. Myosin C. Kinesin D. Motorin .E. All of the above 19. M ovement of molecules from one side of an epithelial Iayer so the oher is...
The smallest chemical units of matter are atoms b) molecules c) protons d) neutrons e) electrons . Which of the following would have the largest size? a) an atom b) a molecule c) a proton d) a neutron e) an electron 3. Isotopes of an element differ in the number of a) protons in the nucleus b) electrons in the nucleus © neutrons in the nucleus d) electron clouds e) energy levels they contain 4. VO The atomic number represents...
9 ) When viewed with an electron microscope, what gives the rough Endoplasmic Reticulum its rough appearance? A) The nucleus B) Mitochondria C) Nucleosomes D) Ribosomes E)sugars 10 ) Which statement below describes the function of smooth endoplasmic reticulum? A) Packing and sorting of newly synthesized macromolecules B) Protein Synthesis C) Cellular Respiration D) Detoxification and hydrolysis of polysaccharide E) Photosynthesis 11 ) If a cell is in a hypotonic environment that means…….. Protein synthesis The solute concentration inside...
Microbiology study guide questions. Please Help!
s. which of the following statements about water activity is not true? a) many fungi can tolerate aw levels of 07-0.8 b) many microorganisms grow well at an aw of 0.98 e sear water has an aw of 0.98 e-xerephiles thrive in dry conditions DNA typically becomes disordered below an a of o.90 Which of the following descriptions about ribosome structure is not true? a) 80s is the size of the intact functional ribosome...
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 00 OA Figure 2.1 Using Figure 2.1, match the following: 1) Tertiary (protein) structure, 2) Monosaccharide 3) Nucleotide 4) Lipid 5) Functional protein 6) Polymer 7) Polysaccharide TRUE FALSE. Write T if the statement is true and F if the statement is false, 8) Final preparation for cell division is made during the cell life cycle subphase called G2. SHORT ANSWER. Write the word...