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After dopamine binding, the dopamine receptor changes his shape and binds the inactive G protein.The G protein expels its GDP molecule replacing it by GTP. and falls into two pieces. The Galpha subunit binds to and activates the enzyme adenylyl cyclase, which produces then cyclic AMP spreading a signal through the cell.

Dna structure on science background. 3d illustration

Photomicrograph of filamentous blue-green algae, Oscillatoria species. Each band along the stand is one cell. This filament is very short probably having recently parted from a longer one. Filaments are typically many times longer. This algae is mobile, it moves and twists through the water. San Francisco Bay, California, USA. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination. Note - motion blur of live specimen, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.

Microalgae under microscopic view, green algae, cyanobacteria, phytoplankton, diatom, algae mix collage background

A ribbons model of an antibody broadly antagonistic to HIV. A challenge in AIDS and HIV research is producing a vaccine which elicits antibodies effective against the many variations of HIV proteins.

Nucleosome structure. Structure of an oligonucleosome, showing the packaging of DNA in chromosomes. 3D illustration.

nanotechnology and abstract graphene structures

$The Raf/MEK/ERK (MAPK) propagates growth signals in the cell. Misregulation can lead to cancer.\nThe red dots on the active EGFR are phosphorylated tyrosines. PDB entries: 1egf, 1nql, 1m17, 2jwa, 3njp, 2gs6, 1gri, 1xd2, 3ksy, 5p21, 6xi7, 6q0j, 2y4i,$

Endosomes - 3d rendered image of Endosomes are membrane-bound organelles. They are parts of endocytic membrane transport pathway. Endomembrane system in cells. Bilayer Lipid Membrane. Abstract medical illustration. Microscopic view. Microbiologic research concept.

DNA close-up, DNA Molecule Model, DNA Strands, DNA animation

$The three-dimensional structure of proteins is represented in a variety of conformations. This image is based on the ribbon structure of a protein. It is suitable for biology notebooks and book covers.\nThis image has not been created by AI.$

3D illustration of nanoparticles on colorful background

3d Rendering Molecular Structure,Ozone,Hydrogen and oxygen

A GTP-bound G-alpha protein (blue) binds to and activates the enzyme adenylyl cyclase, which produces then cyclic AMP spreading a signal through the cell.

Molecular structure formula. Concept. 3D Render

Folic acid, folate molecule. It is known as vitamin B9. Molecular model. 3D rendering. Illustration

Photomicrograph of rotifer, probably Rotaria rotatoria. Rapidly rotating cilia at top of head, internal organs visible. Green circles are algae. Live specimen. Original image at 40X, wet mount, transmitted brightfield illumination. Indistinct image due to motion blur of live specimen and very shallow depth of field of brightfield illumination.

3d rendering of benzene molecules conjugated gold (Au) nanoparticles (NPs) on the black background

A conceptual image of an abstract network of multi-coloured organic strands arranged in a non regular pattern all connected together in a complex manner. The network is made from smaller multi-coloured squares and polyhedra, in vivid colours against a pastel toned background. Shows background and foreground elements to the structure.

Nourish hair of shampoo or serum. Repair damaged hair concept, 3d rendering.

Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet), ampicillin (red).

antibodies to cell movement of the virus

Abstract Genetics Disease - 3d rendered image.

$CRISPR-Cas9\nproteins recognize and cut foreign pathogenic DNA$

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Cycle of CO2 ﬁxation in CAM photosynthesis.svg

Substrate-level phosphorylation generating ATP.svg

2009 ATP tournaments distribution map.svg

2010 ATP tournaments distribution map.svg

Intensywnosc fotosyntezy w zaleznosci od swiatla.svg

Esquema de la reacción química de la fotosíntesis en vectores.svg

Biotin dependent carboxylases and citric acid cycle-de.svg