Answer: A) dinosaurs
Explanation:
Global shift from a warmer tropical climate to a colder climate may have been the cause of the dinosaur extinction
Answer: Lucy
Explanation:
I’m a physical science major
If the shape of this unknown skull is long and skinny at the cheekbones, then it is most likely an Australopithecus afarensis one
Answer:
The correct answer is 3 They detect light,allowing the spiders to see colors.
Explanation:
Photoreceptors are also called transducin presnt in the rod cells of retina and play an important role in vision.
The phoreceptor is a G protein coupled receptor that contain GDP.When light strikes the eye the GDP is coverted to GTP resulting in the activation of the photo receptors.
The activation of photo receptors result in the closure of Na+ ion channels leading to hyperpolarization caused by lowering the cellular label of cGMP by the activation of phosphodiesterase enzyme.
This ultimately result in the formation of 5"GMP.
Explanation:
When two or more substances are brought together in a fixed proportion by weight ,then the resulting mass is known as mixture .
