Compare a gap junction to a channel protein, how are they alike and how are the different?
What will be an ideal response
Both allow ions and small molecules to pass through by diffusion. However, gap junctions are embedded within in the plasma membranes of two neighboring cells. The alignment and connection of the gap junctions between the neighboring cells allows the passage of ions and small molecules directly from one cell into another.
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________ carry excess cholesterol from peripheral tissues to the liver
A) Very-low-density lipoproteins (VLDLs) B) Low-density lipoproteins (LDLs) C) Intermediate-density lipoproteins (IDLs) D) High-density lipoproteins (HDLs) E) Very-high-density lipoproteins (VHDLs)
Identify the general events of fetal development during the second and third trimesters
What will be an ideal response?
The pancreatic hormone that causes blood sugar levels to fall is
A) cortisol. B) somatotropin. C) insulin. D) glucagon. E) aldosterone.
The first meiotic division of a primary oocyte occurs within a mature follicle just prior to ovulation
Indicate whether the statement is true or false