Answer:
Beaches would shrink until they were no longer there because the sediment is pulled away from the shores by the tide and there would be no new rock sediment to replace the old rock sediment.
Answer:
The correct answer is option D) "The enzyme will use any tRNA species but is highly specific for a given amino acid".
Explanation:
Aminoacyl-tRNA synthetases, also known az tRNA-ligase, are the enzymes that catalyze the attachment of the appropriate amino acid onto its tRNA. It is false to affirm that these enzymes will use any tRNA species but is highly specific for a given amino acid. In fact, aminoacyl-tRNA synthetases are highly specific for both, tRNA species and amino acids. Kinetic studies show that aminoacyl-tRNA synthetases reject wrong tRNAs during catalysis.
Any no live no part of the environment, such as sunlight, heat, precipitation, humidity, wind or water currents, soil type, and so on.
Given question is incomplete. Complete question has been attached.
Answer:
C. Excessive potassium has diffused out causing hyperpolarization.
Explanation:
The nerve action potential can be divided into following stages:
- Stimulus is detected by the cell in resting stage.
- Sodium channels in the membrane open from where influx of sodium ions occur which is called depolarization
- After a while, sodium channels close and potassium channels open from where efflux of potassium ions occur which is called repolarization.
- The membrane potential further lowers due to continous efflux of potassium ions which is called hyperpolarization.
- After a while potassium channels close and membrane returns to its resting stage.
In the given figure, stage 4 depicts hyperpolarization because the membrane potential has dropped to the lowest point below -70mV. Hence, option C is correct.
<span>
<span>
Electron Transport Chain or ETC is a series of compounds which transfer electrons to electron transfer from electron donors thru a redox reaction which in turn, couples this electron transfer with the proton transfer (H+ ions) through the membrane.
The negatively charge particles that chlorophyll loses to the transport chain or ETC are replinished by the molecules of water. Water is divided and electrons from it are used to replace the electron found in the chrlorophyll pigment.
</span></span>