Membrane proteins that extend into the lipid bilayer are called
A. integral proteins.
B. lipoproteins.
C. peripheral proteins.
D. glycoproteins.
E. extrinsic proteins.
A
You might also like to view...
Which vein directly drains the blood returning from the face and scalp?
A. Internal jugular vein B. External jugular vein C. Internal carotid veins D. External carotid veins
The sodium-potassium ion exchange pump
A) must reestablish ion concentrations after each action potential. B) transports sodium ions into the cell during depolarization. C) transports potassium ions out of the cell during repolarization. D) moves sodium and potassium opposite to the direction of their electrochemical gradients. E) depends on a hydrogen gradient for energy.
What is the early stage of embryonic development during which rapid mitotic cell divisions occur as the zygote travels down the uterine (fallopian) tube?
A) the acrosomal reaction B) cleavage C) fertilization D) implantation
The parietal bones are joined to the occipital bone by the ________ suture.
A. coronal B. squamous C. lambdoid D. sagittal