How do low-density lipoproteins (LDLs) move into cells?
A. LDLs are transported through a pump that is also an ATPase.
B. LDLs diffuse through the phospholipid bilayer.
C. LDLs diffuse through channels in the membrane.
D. LDLs are engulfed through receptor-mediated endocytosis.
Answer: D
You might also like to view...
In a negative feedback mechanism, ________
A) the output increases in response to the stimulus B) the output opposes or counteracts the stimulus C) the output multiplies the stimulus D) the output increases exponentially in response to the stimulus
Venae cavae are the largest of what type of vessel?
A) artery B) arteriole C) capillary D) venule E) vein
The perineum consists of an anterior
A. ischial tuberosity and a posterior anal ellipse. B. urethral orifice and a posterior pubic crest. C. false pelvis and a posterior true pelvis. D. urogenital triangle and a posterior anal triangle. E. pubic quadralateral and a posterior anal rhombus.
The average person has approximately ________ nephrons per kidney.
A. 3.6 million B. 2.4 million C. 5.6 million D. 4.8 million E. 1.2 million