Answer:
A cell cycle is a series of events that takes place in a cell as it grows and divides
Explanation:
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Answer:
Part 1:D) Fertilization
Part 2: C) The process combines genes from two individuals into a distinct organism.
Explanation:
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Answer:
NeanderthalsThese artistic innovators were probably Neanderthals. Dated to 65,000 years ago, the cave paintings and shell beads are the first works of art dated to the time of Neanderthals, and they include the oldest cave art ever found
Explanation:
Which hominids created art? The first human artist on Earth is believed to have drew on a cave wall with red ochre over 65,000 years ago, as a Neanderthal reached out and drew on it. There is no evidence that the modern human is the only species to express itself through art, as is widely believed.
Answer:
Mutation.
Explanation:
All adaptations begin as a genetic mutation because these adaptations passed from one generation to another generation through genes of that organisms. Organisms that are adapted to their environments and survive more better, it will produce more offspring in which that genetic characteristics are transmitted from the parents so we can say that genetic mutation is responsible for adaptations.
Answer:
b) opening calcium pores in the membrane
Explanation:
The opening of calcium ions channels facilitates the migration of vesicles containing neurotransmitters in the pre-synaptic neurons to the tip of the post-synaptic membrane. at the <u>neuromuscular junction </u>These neurotransmitters can either be <u>cholinergic or non-chorlinergic.</u> <u>At the tip of the pre-synaptic membranes the vesicles empty their neurotransmitter contents into the synapse.</u>
The neurotransmitters, diffuse through the neuromuscular junction to bind with the receptors on the <u>post-synaptic membrane on the post-synaptic neuron.</u> This stimulates opening of<u> ligand gated sodium ions,</u> and sodium ions diffuse into the post-synaptic neuronal membrane, to cause <u>depolarization</u>. if the stimulus is up to the threshold levels it generate action potential.
Therefore , more calcium ions channels opening produces; more diffusion of neurotransmitters;leading to opening of more sodium channels for depolarization; and IPSP or EPSP generation.
