Which of the following is the correct sequence of events for muscle contractions? muscle cell action potential, neurotransmitter release, atp-driven power stroke, calcium ion release from sr, sliding of release, motor neuron action potential, muscle cell action potential, release of calcium ions from sr, atp-driven power strokemotor neuron action potential, neurotransmitter release, muscle cell action potential, release of calcium ions from sr, atp-driven power stroke, sliding of release, muscle cell action potential, motor neuron action potential, release of calcium ions from sr, sliding of myofilaments, atp-driven power strokemotor neuron action potential, neurotransmitter release, muscle cell action potential, release of calcium ions from sr, atp-driven power stroke, sliding of myofilaments

Mouse liver cells were homogenized and the homogenate subjected to equilibrium density-gradient centrifugation with sucrose gradients. fractions obtained from these gradients were assayed for marker molecules (i.e., molecules that are limited to specific organelles). the results of these assays are shown in the figure. the marker molecules have the following functions: cytochrome oxidase is an enzyme involved in the process by which atp is formed in the complete aerobic degradation of glucose or fatty acids; ribosomal rna forms part of the protein-synthesizing ribosomes; catalase catalyzes decomposition of hydrogen peroxide; acid phosphatase hydrolysis monophosphoric esters at acid ph; cytidylyltransferase is involved in phospholipid biosynthesis; and amino acid permease aids in transport of amino acids across membranes. a) name the marker molecule and give the number of the fraction that is most enriched for each of the following cell components: lysosomes; peroxisomes; mitochondria; plasma membrane; rough endoplasmic reticulum; smooth endoplasmic reticulum.

How are fungi more like an animal? they have a cell wall. they are heterotrophs that absorb their food. they produce seeds and have membrane-bound nucleus. they use sunlight for photosynthesis.

Which test would show positive results for orange juice