The dimensions of two different cells are measured under a microscope. Their surface areas and volumes are shown in the table below. Over time, Cell B increases in size, while Cell A stays the same. Which of the following correctly explains which cell will be able to obtain nutrients faster by diffusion?
Ans: Cell A, since it now has a greater surface area-to-volume ratio than Cell B
(Cell A is 6:1 and Cell B is 24:8 = 3:1)
You might also like to view...
How do muscles store their energy?
A. In their mitochondria B. As glycogen C. In their terminal cisternae D. Bound to myoglobin E. Bound to troponin
Multiunit smooth muscle cells
A. generally have individual innervation of each cell. B. can only be excited, and not inhibited. C. respond to stretch by relaxing. D. have many gap junctions between cells. E. have abundant T-tubules.
The left renal vein, right renal vein, right suprarenal vein, and right gonadal vein merge directly into the
A. superior vena cava. B. great saphenous vein. C. inferior vena cava. D. common iliac vein. E. obturator vein.
Rh antigen is also called
A) the D agglutinogen. B) anti-A. C) the A agglutinin. D) the R factor. E) the B agglutinin.