Using the figure below, identify the location where each process occurs.
1 Pockets pinch off, forming endosomes known as coated vesicles.
2 Coated vesicles fuse with primary lysosomes to form secondary lysosomes.
3 Target molecules (ligands bind to receptors in plasmalemma.
4 The endosome fuses with the plasmalemma, and the receptors are again available for ligand binding.
5 The lysosomal and endosomal membranes separate.
6 Areas coated with ligands form deep pockets in plasmalemma surface.
7 Ligands are removed and absorbed into the cytoplasm.
1 C
2 D
3 A
4 G
5 F
6 B
7 E
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Which stimulus was at or above threshold?
A) strong B) weak C) moderate D) the moderate and strong stimuli
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Indicate whether the statement is true or false