The answer is A: least explosive
Answer: The correct answer is- E) structural framework.
Fibrous proteins are water insoluble, elongated filamentous like structures that that provide structural framework ( they have special types of helices in their structures) to the cells or tissues of organisms.
They contain repetitive amino acid sequences in their structure that provides strength to the structure.
They are very less sensitive to any change in pH, temperature, as well as enzymatic digestion.
They are usually involved in the formation of connective tissue.
Example of fibrous protein- Actin, myosin, elastin, keratin.
Answer:
C) human actions altering ecosystems with serious consequences
Explanation:
The increase in the manatee´s death during 2011-2012 might be directly related to human actions.
The increase in the number of people during the last 50 years to more than 500,000 individuals, and probably the lack of policies and regulation, lead to an enhance in water pollution by sewage tank leaks.
Pollution probably caused a gradual decrease in the manatee´s principal source of food, which also caused an increase in the toxic algae population.
Algae caused the death of manatees as a consequence of human action that altered the natural ecosystem by polluting water.
Cyclin dependent kinase protein that combines with cyclins to exert local control of the cell cycle.
Cyclin dependent kinase is a protein that combines with cyclin to play an important role in the cell division and helps to transform transcription.
It provides a region for the enzymatic activity of the cell to occur in cell cycle.
Cyclins alone are not active and hence remain in inactive state but when they combine with cyclin dependent kinase they gets activated, making up an functional enzyme and thereby targeting different proteins in the cell.
Cyclins are only the regulatory proteins with zero enzymatic function. However, cyclin dependent kinase are proteins that are catalytic in nature which have enzymatic property to carry out functioning in the cell itself.
Cyclin dependent kinase play a key role acting as a cell regulator during the mitotis or cell division.
Learn more about Mitosis here, brainly.com/question/26678449
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An INHIBITORY Signal is sent between neurons when (A)Na+ rushes into the neuron.
Explanation:
- When one spot of membrane supports an action potential, lots of \text {Na}^+Na+start text, N, a, end text, start superscript, plus, end superscript ions hurry into the cell by that spot.
- These ions radiated out sideways into the cell and can depolarize a nearby spot of membrane, stimulating the hole of voltage-gated sodium channels and causing the nearby spot to support its action potential.
- The action potential can only move in one direction – from the cell body towards the axon terminal – because a spot of membrane that has just experienced one action potential is in a “refractory period” and cannot withstand another.
