Answer: The stratum granulosum
Explanation: It is called the grainy layer because it contains keratin-filled granules
The 'grainy cells' layer of the epidermis is the stratum granulosum. This layer gets its grainy look from the keyword proteins keratin and keratohyalin produced by the keratinocytes as they move from the stratum spinosum. These proteins create granules within the cells, giving the layer its appearance.
The layer of the epidermis known as the 'grainy cells' is the stratum granulosum. This layer gains its grainy appearance due to changes in the keratinocytes as they move from the stratum spinosum. These cells, which are three to five layers deep, become flatter and their cell membranes thicken. Additionally, they generate a large amount of the proteins keratin and keratohyalin. These proteins accumulate within the cells, creating the appearance of granules, hence the 'grainy' description. As the cells die, they leave behind keratin, keratohyalin and their cell membranes to form the subsequent layers of the epidermis: the stratum lucidum, the stratum corneum, and other structures such as hair and nails.
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Prokaryotes are unicellular microorganisms that do not have cell nuclei or membrane-bound organelles.
In conclusion, prokaryotes are unicellular microorganisms that do not have cell nuclei or membrane-bound organelles.
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b.stormy
c.hot
d.tranquil
Option (D) Tranquil best describes the eye of the hurricane.
In the heart of tropical cyclones, there is typically calm weather.
They are between 20 and 50 kilometers in diameter and are located at the center. The hurricane's eye is its focal point, the point around which the remainder of the storm revolves, and where its lowest surface pressures are located.
Above the eye, skies are frequently clear, and winds are generally mild.
The eye is so tranquil because it is never reached by the now powerful surface winds that are converging towards the center. The coriolis effect causes the wind to revolve around the hurricane's core (the eye wall), slightly deflecting it away from the exact center (the eye), which remains calm.
Therefore, option (D) best describes it.
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egg
B.
pupa
C.
larva
D.
adult
B. Second messengers are short-lived because cytoplasmic enzymes convert them to their inactive forms.
C. When G proteins hydrolyze GTP to GDP, they become inactive and halt production of second messengers
D. Phosphatases terminate phosphorylation cascades by adding phosphate groups to proteins in the phosphorylation cascade.
The statement- "Phosphatases terminate phosphorylation cascades by adding phosphate groups to proteins in the phosphorylation cascade." is false. option D is correct.
In a phosphorylation cascade, protein kinases, the phosphorylate proteins and protein phosphatases dephosphorylate them.
For a phosphorylation cascade, the source of phosphate is ATP (adenosine triphosphate). In a phosphorylation cascade, a phosphate group is transferred from ATP to a protein, which activates or deactivates the protein, depending on the specific cascade.
This process in which phosphate group is transferred from ATP to protein is carried out by enzymes which are known as protein kinases.
Thus, option D is correct.
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Answer:Phosphates terminate phosphorylation cascades by adding phosphate groups to proteins in the phosphorylation cascade.
Explanation: