To get a rough estimate of your heart rate during any form of activity, begin by calculating your maximum heart rate. This rate changes on a year-by-year basis and is possible to determine by subtracting your age from 220. So, if you're a 50-year-old woman, your maximum heart rate is 170 beats per minute.arch to Your Own Beat. Walking, regardless of the distance you travel, is a moderate-tempo activity, according to the Centers for Disease Control and Prevention. Provided you keep your pace during your one-mile walk no greater than 3 mph, your heart should beat at a moderate rate.
View Full Document. Lysosomes are vesicles that contain digestive enzymes. These can fuse with vesicles containing extracelluar material or old organelles, causing the contents to be degraded. Peroxisomes are a subclass of microbodies that carry out oxidative metabolism that generates peroxides. The isolation of these enzymes in vesicles protects the rest of the cell from the very reactive chemistry occurring inside. Vacuoles are membrane-bounded structures that have a variety of roles ranging from storage to cell growth in plants.
About 40 different digestive enzymes reside inside a lysosome. These enzymes are made by organelles called ribosomes that are attached to the endoplasmic reticulum and put into packages by the Golgi bodies. The inside or matrix of a lysosome has an acidic pH of about 4.8, which is the optimal environment for the enzymes.