They serve as supportive structural and protective components in the cell walls of bacteria and plants. They can act as ligands and receptors in cellular communication. They are used as covering for nerve fibers and as the basic structural components of all cell membranes. They comprise the most abundant constituents of plants and animals.
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From the given statements which of the following statements is false when it comes to carbohydrates?
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- Which part of the cell membrane (phospholipid bi-layer) is attracted to water (hydrophilic), and whichpart hides from water (hydrophobic)? Identify the traits of molecules that can pass through the membrane, and predict which molecules can andcannot pass through.The sugars associated with glycoproteins and glycolipids of animal cell membranes Maintain membrane fluidity at low temperatues Decrease membrane fluidity at high temperatures Serve as an energy source for the cell Serve as markers that distinguish one cell from anotherWhich of the following are connections between cells that allow for communication in animal and plant cells, respectively? hemidesmosomes, desmosomes gap junctions, plasmodesmata tight junctions, adherens junctions none of the other answers plasmodesmata, gap junctions
- Endosymbiotic theory can be applied to Biomolecules as it invloves the development of nucleic acid and DNA. Protein import is one of the strongest evidence of origin of organelles. EXPLAIN!Which is a common element of protein structure? A legume root nodule with symbiotic nitrogen - fixing bacteria b N- glycosidic bond c 5- po4 and 3 -oH d B sheet E antiparallel double helixWhen the Golgi apparatus glycosylates a protein with the mannose-6-phosphate tag, this carbohydrate tag helps to protect the protein from: cell biology free radical damage in mitochondria digestion in the acid interior of lysosomes phototoxic damage in chloroplasts shearing forces along the cytoskeleton disassembly in the nucleolus
- The most basic and critical function of membranes is toserve as a ____________________.A biochemist grinds up a sample of plant roots, fungal mycorrhizae, and soil-dwelling arthropods. They then extract a mix of several polymeric molecules. Of the polymers found within the sample, which of the following molecules is least likely to be used as a component of a cell wall? Group of answer choices A. Chitin B. Glucan C. Starch D. CelluloseIn what way do the membranes of a eukaryoticcell vary?(A) Phospholipids are found only in certainmembranes.(B) Certain proteins are unique to each membrane.(C) Only certain membranes of the cell areselectively permeable.(D) Only certain membranes are constructed from amphipathicmolecules.
- The Archaeal cell membrane contains ---------------- lipids made up of ------------------- subunits. Select one: a. phytanyl, fatty acids b. phytanyl, isoprene c. phospholipids, fatty acids d. phospholipids, isopreneDistinguish between prokaryotic and eukaryotic cells in terms of presence or absence of a nucleus, presence or absence of membrane-bound organelles, size, and form the DNA takes (i.e., straight or circular).In plants, the cell wall forms as a young plant cell secretes polysaccharides onto the outer surface of its plasma membrane. Being thin and pliable, this primary wall allows the cell to enlarge and change shape. At maturity, cells in some plant tissues deposit material onto the primary wall’s inner surface. Why doesn’t this secondary wall form on the outer surface of the primary wall?