Answer:
An active transport requires energy, a passive transport does not.
That's all! Hope that helps :)
Answer:
Ligand-receptor interaction is the first interaction that triggers cell signalling.
Ligands are the hormones, drugs or neurotransmitters that specifically bind with receptors present in cell surface to initiate cell signalling. Ligand binding to the receptor is reversible. Binding of the ligand to the receptor can activate or inactivate receptor. Activation may lead to cell signalling pathways. Inside cells, there are secondary molecules which on activation starts a cascade of reactions. which in-turn regulate the function of the ligand molecule.
At first, the activated receptor relates with G proteins molecules in the cell.
before the ultimate physiological effect of the ligand on the cell's behavior is produced Therefore, the cellular signaling starts as soon as the first messenger (the ligand) binds to its receptor.
hope this helps
The first one is the 3rd option and the 2nd one is also the 3rd option
The answer would be E because boys inherit the Y chromosome from the dad which in this case would have the color blind trait. Girls don’t get the y from the father to get the color blind trait not be color blind because girls have 2 (X) chromosomes. Hope this helps
I'm not completely sure, but I'm fairly certain that the answer is B.
