What skeletal muscle fiber type has slow myosin ATPase activity? ___ - bridges form when myosin head binds to active sites on G actin molecules. Fill in the blank. A myosin cross-bridge attaches to actin in order to ___. Which structure...
Which protein covers the myosin-binding site on actin when a muscle cell is relaxed? a) tropomyosin. b) actin. c) myosin head. d) troponin. e) none of these. Which of the following molecules directly blocks the binding site between actin and myosin? a) calcium ions b) troponin c...
What happens when a cell performs phagocytosis? a. A portion of the plasma membrane wraps around a large particle or protozoan, forms a vesicle around it, and ingests it. b. Asexual reproduction is occurring. c. A cell is transformin...
Each contains a nucleus at its center, within which its chromosomes are contained. The cell is full of a liquid called cytosol, which is water and dissolved salts. Structures called organelles float in the cytosol, along with organic molecules, such as proteins and lipids. Organelles are ...
because these processes synthesize small molecules into larger and more complex compounds that the body requires. On the large scale, you can see the results of anabolism in a growing child, a healing wound, or a swelling muscle. On the microscopic scale, anabolic processes in cells include ami...
The presence of Aβ and mutations in genes encoding innate immune molecules make microglia more susceptible to stimulation and/or promote their activation, leading to the continuous production of inflammatory cytokines and chemokines, ultimately resulting in neurodegenerative changes and neuronal loss [51]...
Under normal conditions, alpha-Gal A is responsible for breaking down fatty molecules such as Gb3 inside a cellular compartment called the lysosome, where cell recycling processes take place.The mutations, however, result in an alpha-galactosidase A deficiency that causes Gb3 to toxically ...
Third, specific sets of cell adhesion molecules provide guidance cues for axon path finding and synapse formation, leading to the assembly of region- and cell type-specific local and global circuit networks. Fourth, patterned neural activities spontaneously emerged from the circuits and/or influenced ...
How does the structure of a cell suggest its function? What would 3 examples be of this What is the name given to the cells that are capable of developing into most, but not all, of the body's cell types? Describe two examples of antimicrobial molecules made by a phagocytic cell. ...
The class of organic molecules characterized by their insolubility in water is the: a. Carbohydrate. b. lipids. c. proteins. d. ions. e. nucleic acids. The monomers of carbohydrates are called what? To which class of organic compound do enzymes belong?