BIO 201L

​1. Compare and contrast diffusion and osmosis.​” With Diffusion both the solvent and solute particles can cross the membrane, with osmosis only the solvent crosses the membrane. Both are passive transports. ”​2. What is the water potential of an open beaker containing pure water?​ ” The water potential is 0 ”​3. Why don’t red blood cells swell or shrink in blood?

1. How do banding patterns change when a muscle contracts?” Muscle contraction causes actin and myosin myofilaments to decrease length and come together. Both the H and I zones become narrow and the A band has no change. ”2. What is the difference between a muscle organ, a muscle fiber, myofibril and a myofilament? ” Muscle organs are tissue composed of cells and fibers producing movement throughout the body that result in contractions. Muscle fibers are composed of myofibrils that c...

1. What is the primary function of the nervous system?” The primary function of the nervous system is to gather and process sensory signals from external environments and internal input from our body. ”2. Why does the cerebral cortex contain so many folds? ” It helps increase the surface area. ”3. What is a nerve impulse? ” A nerve impulse is a signal sent from the axon terminal down nerve fibers. It consists of a wave of electrical depolarization that reverses potential differe...

What is the function of the endocrine system .1 .Its function is to secrete hormones throughout the body .Research two types of hormones and describe the mode of action for each .2 adrenaline - once secreted from the brain it puts the body into a fight or flight mode. Its (1 mode of action is the alpha adrenergic receptors. 2) melatonin - this hormones has day and .night cycles and its mode of action is in the MT 1 and MT 2 receptors ?Which gland is both endocrine and exocrine .3 The panc...

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BIO 201L Chapter 22 (Physiology, Anatomy, cells, B., c., Histamine) 1. The lymphatic system is involved in A. fat absorption from the digestive tract. B. transporting lymph fro m the intestines to the liver. C. maintenance of pH in the tissues. D. production of erythrocytes. E. protein metabolism. A. fat absorption from the digestive tract. 2. The lymphatic system plays a role in maintaining fluid balance within the body by A. adding lymph to GI tract secretions. B. returning interstitial fluid ...

BIO 201L Lab 9 : The endocrine system A+ Graded/BIO 201L Lab 9 : The endocrine system A+ Graded/BIO 201L Lab 9 : The endocrine system A+ Graded

BIO 201L Lab6 : THE SKELETAL SYSTEM/BIO 201L Lab6 : THE SKELETAL SYSTEM/BIO 201L Lab6 : THE SKELETAL SYSTEM

BIO 201L LAB 4 DIFFUSSION AND OSMOSIS/BIO 201L LAB 4 DIFFUSSION AND OSMOSIS/BIO 201L LAB 4 DIFFUSSION AND OSMOSIS