Which of the following defines a master regulator? A condensed, inactivated X chromosome in the body cell of a female mammal A technique of introducing a mutation that disables expression of a gene in an organism A gene whose expression triggers a gene expression cascade that ultimately changes cells in a lineage to more differentiated types A regulatory proteln that influences transcription by binding directly to DNA

Q: Which statement is TRUE regarding the Na+ voltage-gated channel in neurons? A) Similar to the…

A: Channels are integral membrane protein that have a pore in the middle through which ions/solutes can…

Q: In a non-biological system, given the equation CO2 + H2O ⇌ H2CO3 ⇌ HCO3- + H+ , what would happen to…

A: In this reaction, CO2 + H2O ⇌ H2CO3 ⇌ HCO3- + H+, CO2 reacts with the water to produce carbonic…

Q: So named beacause it acts under conscious control?

A: Conscious control means which is under the will or the control of the individual.

Q: Explain what the oxygen is needed for in the cells?

A: The cells are considered as the basic unit of life and large numbers of them accumulate together to…

Q: Claude Bernard, a nineteenth-century French physiologist often considered the father of modern…

A: Physiology is the medical science deals with the study of  whole body, organs and it functioning.…

Q: In many organisms, the central nervous system relies on specialized cells called neurons to…

A: Membrane transport is a mechanism in which molecules/ substances are transported across the membrane…

Q: A mutation in the alpha globin gene that introduced one additional basic amino acid residue in the…

A: 2,3-Bisphosphoglycerate or BPG shifts T-R equilibrium to the left as it only binds to…

Q: Which of the following statements (s) about the ESA is not true

A: Answer is option a

Q: ach

A: B. ACH or Acetylcholine is the only neurotransmitter that is present in the somatic muscular…

Q: cetylcholine binds to a GPCR on heart muscle, making the heart beat more slowly. The activated…

A: Acetylcholine slows the heart rate by activating the M2 muscarinic receptor. It opens the…

Q: Which of the following is the most important contributor to the difference between the resting…

A: The action potential is a sequence of variations in the voltage across the membrane. This action…

Q: What component serves as the receptor? What component serves as the control center? What component…

A: Homeostasis is body's ability to adjust it's internal environment for the maintainence of optimal…

Q: Compute the free energy change in Joules that occurs at 303 K as the cell is tranitions from resting…

A: For free energy calculation, we can use the Nernst free energy equationi.e ΔG = -nF.ΔEWhere, ΔG =…

Q: Short term control mechanisms are implemented by the ........system, while long term mechanisms are…

A: Blood is a body fluid that transports necessary substances, nutrients, hormones, and oxygen to the…

Q: What stores CA+ in the muscle cells and what stores CA+ as a reservoir in the human body?

A: Numerous ion channel proteins pumps are located within the SR membrane and it helps to pump calcium…

Q: MYK-461 is also hypothesized to a) stabilize a head-head interaction in two-headed cardiac myosin.…

A: MYK-461 is a small molecule that helps to decrease the ATPase rate of cardiac myosin by reducing the…

Q: You are a world-famous muscle physiologist studying the control of smooth muscle in arterioles found…

A: An arteriole is a small branch of an artery that leads into the capillaries. It helps in the…

Q: What is the emf of a cell consisting of a Pb2+/Pb half-cell and a Pt/ H / H₂ half-cell if…

A: Step 1: Standard reduction potential of Pb2+/Pb = - 0.13 V. Standard reduction potential of Pt/H+/H2…

Q: What is myoglobin?

A: Proteins are the polymers of amino acids which link together by peptide bonds and form a compact…

Q: State differences between SER & RER?

A: The cells are the basic building blocks of the living system. It consists of many internal…

Q: What is meant by the term "Critical concentration" with respect to actin filaments?

A: The microfilament or actin filament is made up of monomeric globular actin protein or G-actin. Actin…

Q: 13) Draw a graph representing the changes in membrane potential across the axonal membrane before,…

A: The electric signals that flow down the dendrites to form a nerve impulse or an action potential are…

Q: What key ATPase is important for maintaining this positive (outside) and negative (inside)…

A: Transmembrane potential, also known as membrane potential, refers to the electrical potential…

Q: which of the following would be false? a) summation of B and C would not change membrane  b)…

A: An excitatory postsynaptic potential (EPSP) is the adjustment in film voltage of a postsynaptic cell…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.