The cell membrane only lets some molecules in and out because it is living. semi-permeable. flexible. non-permeable.

An atomic that gains or loses an electron has a net electric charge and is called a/n A) electron B) neutron C) proton D) ion

A weak bond in which electrons are transferred.

The spleen is a unique lymphoid organ that filters blood, rather than lymph. Following splenectomy (surgical removal of the spleen) in an adult, which of the following splenic functions would be performed by the bone marrow or liver?

Which of the following structures would aid a cell in allowing more nutrients to be absorbed by the cell?

Would passive or active immunity protect you from a bacterial infection you have head before?

Of which domain are the prokaryotes members?

What is the most likely reason that doctors do not use the same vaccine each year?

Which primary symptom does the nurse identify as a potentially fatal complication of epidural or intrathecal anesthesia?

Which of these is directly involved in transporting nutrients from the sugar solution into the yeast?

Why do we get a crunchy granular feeling when we chew pear fruit