Answer:
<h2 /><h2>
Both amphibians and reptiles...</h2>
A. have lungs
B. have gills
C. breath only through their skin
D. have amniotic egg
<h3>
For me, my answer is letter B. have gills....Hope it helps</h3>
Explanation:
<h2>
Please don't delete my answer :(</h2>
<h2>
#Princesses Rule</h2>
"The male parts of the flower are called the stamens and are made up of the anther at the top and the stalk or filament that supports the anther."
Answer:Osmosis is a type of diffusion
Explanation:
Answer:
What can be noticed about the ligands and their receptor is that the configuration of both coincide, as a key would with its lock, which demonstrates the specificity of a receptor by its ligand.
Explanation:
A <u>ligand</u> corresponds to a molecule considered a signal or a messenger, while the <u>receptor</u> is a protein on the cell surface, with the capacity to accept a ligand.
Ligands and receptors constitute pairs that complement each other, so that <u>each receptor can bind to a specific ligand</u>, similar to what happens with a key and a lock.
Once the ligand-receptor complex is formed, changes occur inside the cell, which define a certain effect.
The answer is true do to lithified means to transform into stone
