Answer:
D. Stem cells are often extracted from human embryos.
Explanation:
This is a major point of ethical concern and is also a root for many abortion conspiracy theories. The reason it is an ethical concern is because harvesting stem cells often times kills the embryo.
<h2>Answer</h2>
In photosynthesis, plants assimilate carbon in the form of <u>Carbon</u><u> dioxide</u> to make sugar and other organic molecules.
<h3>#CarryOnLearning</h3>
Hello the answer to the question you asked may not be what you are looking for But I'll do the best I can to answer your question.
If you are wanting to know "how does debris form in a mudslide"
then, it forms by debris getting picked up by the mudflow and being carried away by the mudflow itself.
Now if you mean "how does a mudflow form?"
I forms by a excessive amount of rain in that area/place that doesn't happen often or at all. Which causes the ground to not be used to that excessive amount of water so it causes a flooding of water. Now the mudflow happens when that area's soil is very lose so it gets picked up way to easily causing soil (mud) to color the water that dirt's color and be more thick because of the high consistency of mud in it.
Signed, Frequent Answerer Sargedog
Answer:
A Muscle Contraction Is Triggered When an Action Potential Travels Along the Nerves to the Muscles.Muscle contraction begins when the nervous system generates a signal. The signal, an impulse called an action potential, travels through a type of nerve cell called a motor neuron. The neuromuscular junction is the name of the place where the motor neuron reaches a muscle cell. Skeletal muscle tissue is composed of cells called muscle fibers. When the nervous system signal reaches the neuromuscular junction a chemical message is released by the motor neuron. The chemical message, a neurotransmitter called acetylcholine, binds to receptors on the outside of the muscle fiber. That starts a chemical reaction within the muscle.Acetylcholine Is Released and Binds to Receptors on the Muscle Membrane.
A multistep molecular process within the muscle fiber begins when acetylcholine binds to receptors on the muscle fiber membrane. The proteins inside muscle fibers are organized into long chains that can interact with each other, reorganizing to shorten and relax. When acetylcholine reaches receptors on the membranes of muscle fibers, membrane channels open and the process that contracts a relaxed muscle fibers begins:
Open channels allow an influx of sodium ions into the cytoplasm of the muscle fiber.
The sodium influx also sends a message within the muscle fiber to trigger the release of stored calcium ions.
The calcium ions diffuse into the muscle fiber.
The relationship between the chains of proteins within the muscle cells changes, leading to the contraction.
Explanation:
Sry I don’t know how to explain It’s a lot.
Answer:
DNA replication and transmission to daughter organelles produces cytoplasmic inheritance of characters associated with primary events in photosynthesis and respiration. The prokaryotic ancestors of chloroplasts and mitochondria were endosymbionts whose genes became copied to the genomes of their cellular hosts.
