The rapid depolarization phase of the action potentials of myocardial contractile cells is due to Na⁺ ion.
The depolarization is caused when Na⁺ ions rapidly enters into neuron through open sodium channels. Sodium ions plays important role in various physiological process such as regulating blood volume, ph regulation, maintaining blood pressure, energy metabolism,osmotic equilibrium, excitation-contraction coupling, maintenance of cellular homeostasis, development and growth.
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A magnifying glass is an example of a optical microscope. It is also called a light microscope. This microscope is one of the oldest microscope. It uses light and a structure of lenses to help enlarge small representatives.
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Answer:
d. Estrogen will bind to a receptor protein that enters the nucleus and activates specific genes.
Explanation:
Estrogens are small lipophilic molecules synthesized from cholesterol. This steroid hormone (estrogen) is able to directly enter into the cell nucleus to bind with their corresponding receptors. Subsequently, estrogen-receptor binding stimulates these receptors to form dimeric structures that bind to DNA and thus activate gene expression. Estrogen receptors interact with DNA and activate gene expression through zinc finger domains composed of four (4) cysteine residues surrounding a zinc atom.
You can use punnet squares to see possible percentages of genes of the offspring
The rules that govern phonology describe the sound sequences that can occur in a language. Phonology is the science of speech sounds that constitute the fundamental components of a language. It is also the study of sound relationships within a language or between languages in the world.
