Answer:Greenhouse gases allow thermal energy to pass through the atmosphere and back out into space
Explanation:
Plant cells have cell walls while animal cells don't
Answer:
15
Explanation:
the atomic number is the number above the symbol. the number below is the atomic mass.
Answer:
The correct answer is D) integral membrane proteins.
Explanation:
257/5000
Ionic channels consist of oligomeric transmembrane integral proteins (formed by the assembly of several subunits). Said proteins act as gate channels that allow the passage of certain ions eg. calcium, sodium, potassium, etc.