BIOLOGY HIGH SCHOOL

Which layer of the epidermis is known as the grainy cells

Answers

Answer 1
Answer:

Answer: The stratum granulosum

Explanation: It is called the grainy layer because it contains keratin-filled granules
Answer 2
Answer:

Final answer:

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.

Explanation:

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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Zygomycota produce _____, which germinate into new hyphae.
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Define "prokaryotic cell", and describe some properties of organisms that have prokaryotic cells.

Answers

Prokaryotes are unicellular microorganisms that do not have cell nuclei or membrane-bound organelles.

  • According to the type of cell, there are two major evolutionary classes of organisms: prokaryotes and eukaryotes.

  • Prokaryotes are unicellular (single-celled) organisms in which lack membrane-bound organelles such as, for example, mitochondria, chloroplasts, lysosomes) and cell nuclei.

  • In consequence, the genetic material (DNA) in a prokaryotic cell is located in a region of the cytoplasm known as nucleoplasm.

  • Prokaryotes include bacteria (e.g., Escherichia coli) and Archaea (e.g., Pyrolobus fumarii).

In conclusion, prokaryotes are unicellular microorganisms that do not have cell nuclei or membrane-bound organelles.

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Prokaryotes are single-celled organisms that are the earliest and most primitive forms of life on earth. As organized in the Three Domain System, prokaryotes include bacteria and archaeans. Some prokaryotes, such as cyanobacteria, are photosynthetic organisms and are capable of photosynthesis.

Many prokaryotes are extremophiles and are able to live and thrive in various types of extreme environments including hydrothermal vents, hot springs, swamps, wetlands, and the guts of humans and animals (Helicobacter pylori). Prokaryotic bacteria can be found almost anywhere and are part of the human microbiota. They live on your skin, in your body, and on everyday objects in your environment.
properties. ..
All prokaryotic cells have a nucleoid region, DNA and RNA as their genetic material, ribosomes that make proteins, and cytoplasm that contains a cytoskeleton, which organizes and supports the parts of the cell. Prokaryotic cells are simpler than eukaryotic cells, and an organism that is a prokaryote is unicellular; it is made up of only one prokaryotic cell.
Prokaryotic cells are usually between 0.1 to 5 micrometers in length (.00001 to .0005 cm). Eukaryotic cells are generally much larger, between 10 and 100 micrometers. Prokaryotic cells have a higher surface-area-to-volume ratio because they are smaller, which makes them able to obtain a larger amount of nutrients via their plasma membrane.

Which word best describes the eye of the hurricane a.windy
b.stormy
c.hot
d.tranquil

Answers

Option (D) Tranquil best describes the eye of the hurricane.

What are the features of 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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its hard to believe it but its D.

Which is a possible outcome of global warming

Answers

Extinction to different animal species, could vause forest fires and destroy animal habotats therefor becoming extinct, could over heat water causing algae to form on the top not letting sunlight through for plants to photosynthesize which doesnt give fish the nutrients they need to survive.
2 possible outcomes of global warming is climate change and rising temperatures as well. Hoped that helped!!!

What is the mesentery of a frog

Answers

Net Frog Dissection: Organs 10: Pancreas & Mesentery. Organs 10: Pancreas. You can't see the pancreas without lifting the stomach and intestines with the forceps. The pancreas is a thin, yellowish ribbon. The intestines are held in place by thin, transparent tissue called the mesentery.

Which stage of a butterfly's life cycle occurs directly before a chrysalis forms?A.
egg

B.
pupa

C.
larva

D.
adult

Answers

C. Larva, also known as a caterpillar. This stage happens right after the creature hatches from the egg. 

Which of the following statements about signal deactivation is false?A. Hormone response systems respond to very small changes in hormone concentration.

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.

Answers

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:
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