Expound the functions of the following differentiated cells in the experience human body activity. Ex. Blood Cells-- By eating the right kind of food, blood cells can transport essential nutrients toballnparts of the body. The red blood cells help in the production of hemoglobin in the bloodstream which gives oxygen all throughout the body. Muscle Cells Nerve Cells Skin Cells

Expound the functions of the following differentiated cells in the experience human body activity. Ex. Blood Cells-- By eating the right kind of food, blood cells can transport essential nutrients toballnparts of the body. The red blood cells help in the production of hemoglobin in the bloodstream which gives oxygen all throughout the body. Muscle Cells Nerve Cells Skin Cells

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter33: The Animal Body: Basic Form And Function

Section: Chapter Questions

Problem 2VCQ: Figure 33.21 State whether each of the following processes are regulated by a positive feedback loop...

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A white blood cell travels through blood vessels along with red blood cells. A signal from the inside the tissue results in the white blood cell stopping, attaching to the vessel surface, and moving in between adjacent cells that line the blood vessel wall to enter the underlying tissue. Which structure is required for the cell to stop moving? cellulose O integrins O keratin O kinesin
Through the tunnel – like needle of a syringe, you fall suddenly and uncontrollablyenter in a blood vessel in the arm of a volunteer. You continuously float together withlarge, bouncy, and elastic red blood cells until you notice that the liquid turns toyellow in color. You know that you have reached already the blood plasma, so youswitch on your headlamp and observe the cells of the epithelial tissues that line thewall of the blood vessel. Their cell membranes seem to be made of millions of smallballoons. These are the hydrophilic heads of the (1) __________ molecules that makeup most of the membrane surface. Through the transparent surface, you can seetheir flexible, (2)__________ tails projecting inward toward the interior of the cellmembrane, and beyond them an inner layer of (3)__________ molecules with theirtails pointing toward you. Here, there are (4)__________ proteins embedded on the cellmembrane; some rest lightly on the surface, but most project all the way into theinterior…
Figure 33.11 Which of the following statements about types of epithelial cells is false? Simple columnar epithelial cells line the tissue of the lung. Simple cuboidal epithelial cells are involved in the filtering of blood in the kidney. Pseudostratisfied columnar epithilia occur in a single layer, but the arrangement of nuclei makes it appear that more than one layer is present. Transitional epithelia change in thickness depending on how full the bladder is.
Active transport must function continuously because_______. a. plasma membranes wear out b. cells must be in constant motion c. facilitated transport opposes active transport d. diffusion is constantly moving the solutes in the other direction
Figure 33.21 State whether each of the following processes are regulated by a positive feedback loop or a negative feedback loop. A person feels satiated after eating a large meal. The blood has plenty of red blood cells. As a result, erythropoietin, a hormone that stimulates the production of new red blood cells, is no longer released from the kidney.
Calcium ions (Ca?+) are a typical cell at rest. a. more concentrated in the cytosol of b. equally distributed across the membrane of c. more concentrated in the extracellular fluid of
What might you expect to see if the epithelial cells of the lung lacked basal bodies? they would be unable to undergo cell division mucus could not be efficiently cleared from the lung leading to increased risk of bacterial infection the cells would break apart when the lungs expand the endoplasmic reticulum and Golgi would not be properly organized within the cells they would detach from the basal lamina
The extracellular matrix is NOT composed of? OActin O Collagens Fibronectin O Proteoglycans O None of these
he epithelial cells shown in the image, have an apical specialisation which is indicative of what particularly marked cellular activity? 100 um nswers A -E A Resorption of molecules B Transmission of electrical impulses along the cell membrane C Transport along the epithelial surface D Very high phospholipid synthesis E Very high protein synthesis
The lungs deliver a regular supply of oxygen to the blood, which is in turn circulated to most of the cells of the body. At the same, time oxygen is consumed during aerobic cellular respiration within these cells. This implies that oxygen requires active transport to enter most cells the rate of oxygen diffusion is independent of concentration oxygen will passively diffuse into the cells the concentration of oxygen is higher inside of the cell relative to outside of the cell
X Extermal environments of cells can be hypotonic hypertonic or isotonic to intemal environments of the body Y: Internal environments of the cel can be hypolonic. fiypertonic, or isotonic lo external environments of the body led one Buth statements.are FALSE Both statements are TRUE Only the second statement is TRUE. Only the first statement is TRUE
Xena eventually catches Callisto (remember, she is 25 years old). Salmoneus, who is 60 years old, agrees to deliver Callisto to face charges for war crimes. On the way, their cart crashes down a ravine. Salmoneus dies. When a cell dies its plasma membrane becomes “leaky”; i.e., it becomes permeable to ions that were unable to freely cross the membrane during life. Thus, after death, calcium ions leak across the sarcolemma of muscle fibers. This calcium leak causes rigor mortis, a temporary stiffness of the muscles after death. Apply your understanding of the mechanism of skeletal muscle contraction (specifically regarding events within muscle fibre) and explain the molecular basis of the phenomenon known as rigor mortis.