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Alenkasestr [34]
3 years ago
5

What is the function of the protein keratin?

Biology
2 answers:
nexus9112 [7]3 years ago
4 0
The correct answer to this question is:
<span> to provide support and structure for cells in hair, skin, and nails</span>
solmaris [256]3 years ago
3 0
The answer to the question is A
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Ratling [72]

The correct  steps of endochondral ossification is:

  1. A periosteal bone collar develops.
  2. spongy bone and the medullary cavity form in the diaphysis.
  3. The diaphysis center is vascularized and osteoblasts deposit osteoid over calcified cartilage matrix.
  4. The epiphyseal center is vascularized and osteoblasts deposit osteoid over the calcified cartilage matrix.
  5. The spongy bone forms in epiphysis.

<h3>Which bones grow by endochondral ossification?</h3>

Long and short bones, such as the phalanges and femur, arise from a cartilage model formed by endochondral ossification. Distinguishing between these two types of osteogenesis does not imply the existence of multiple types of bone tissue.

Endochondral ossification mainly forms in two stages: modifications of the hyaline cartilage that ends with the death of chondrocytes and invasion of osteogenic cells and their differentiation into osteoblasts in the cavities previously occupied by chondrocytes for deposition.

See more about Endochondral ossification at brainly.com/question/9211436

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4 0
2 years ago
6.) the process by which large molecules are expelled from a cell
sergiy2304 [10]

Answer:

exocytosis

Exocytosis is the reverse of endocytosis. <em><u>Quatities of material are expelled from the cell without ever passing through the membrane as individual molecules.</u></em> By using the processes of endocytosis and exocytosis, some specialized types of cells move large amounts of bulk material into and out of themselves.

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Which of the following are greenhouse gases? oxygen water vapor carbon dioxide nitrous oxide methane
solong [7]
I know carbon dioxide is, I don’t think oxygen and water vapour are. I don’t know the others, sorry
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evablogger [386]
The statement above is FALSE.
Waste solvents are both flammable and toxic.
Waste solvents refers to the liquid waste obtained from the chemical processes that are performed in a laboratory. Such waste are labelled as hazardous, which means, they are toxic and harmful.
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