Answer:
The correct answer is - Tim, Sam, Bella, and Joshua.
Explanation:
The human pedigree shows the particular trait in which is inherited in a family across different generations. In such pedigree, there are some signs that are used to express such as blank shapes represents normal individual, half-filled shapes represents a carrier individuals, and complete or fully filled shapes represent the affected individuals.
Lisa and Monica are half-filled circles which means they are carriers for the disease. Sam, Tim, Bella, and Joshua have filled-in shapes in the illustrated pedigree. Which means they are affected by the disease.
Enzymes are protein in nature, (Mostly some RNA and DNA also can act as enzymes) but for generic purposes Enzymes are proteins.
ACh is released into the synaptic cleft in response to an action potential in the motor neuron. Gradient potentials are started when ACh binds to sarcolemma receptors.
<h3>What triggers a muscle contraction when an action potential occurs?</h3>
The ryanodine receptors (RyRs) in the SR also open and release calcium as a result of the action potential's invasion of the T-tubules, which opens the L-type calcium channels and stimulates contraction.\
Sodium ions within a muscle cell start the action potential. When a muscle contracts, calcium ions are released into the muscle cell, strengthening the muscle. This occurs after the cell becomes positive, starting the action potential.
ACh is released into the synaptic cleft in response to a motor neuron action potential.
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<h2>Answer is option "ferns"</h2>
Explanation:
- Ferns were one of the earliest plants to evolve on the planet. They made their debut during the Devonian Era, which was circa 360 million years ago.
- Ferns were among the first plants to reappear after the K-T extinction event which destroyed the dinosaurs.
- Ferns were the first type of vascular plant and are generally considered to be simpler than vascular plants that make seeds.
- Ferns reproduce by producing and releasing spores in the sporophyte generation Ferns can range from very short, unimpressive house plants to larger, full grown trees.
- Hence, the right answer is option "ferns".
