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shutvik [7]
3 years ago
9

Explain why sublimation is rare and describe the conditions in which it usually occurs.

Biology
1 answer:
san4es73 [151]3 years ago
7 0
Sublimation( solid---gas) is extremely rare because the particular solid needs to exert a high amount of vapor pressure to the extent that it is greater than atmospheric pressure.
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Help plzzzzzzz just plzzz​
Alisiya [41]

Answer:

1 -

a. Arrow pointing inward (water goes into the cell)

b. Hypotonic solution

2 -

a. Arrow pointing outward (water goes out of the cell)

b. Hypertonic solution

3 -

a. Equal sign (no arrow)

b. Isotonic solution

4 -

a. Arrow pointing outward (water goes out of the cell)

b. 10% h20 70% solute

c. Hypertonic solution

5 -

a. Arrow pointing inward (water goes into the cell)

b. 50% h20 (in the cell) 20% h2o (out of the cell)

c. Hypotonic solution

6 -

a. Arrow pointing outward (water goes out of the cell)

b. 30% solute (in the cell) 80% solute (out of the cell)

c. Hypertonic solution

5 0
3 years ago
Which would probably have the greatest effect on a protein's function—a change to the primary, secondary, or tertiary structure?
Alja [10]

Answer:

There are 20 different standard L-α-amino acids used by cells for protein construction. Amino acids, as their name indicates, contain both a basic amino group and an acidic carboxyl group. This difunctionality allows the individual amino acids to join in long chains by forming peptide bonds: amide bonds between the -NH2 of one amino acid and the -COOH of another. Sequences with fewer than 50 amino acids are generally referred to as peptides, while the terms, protein and polypeptide, are used for longer sequences. A protein can be made up of one or more polypeptide molecules. The end of the peptide or protein sequence with a free carboxyl group is called the carboxy-terminus or C-terminus. The terms, amino-terminus and N-terminus, describe the end of the sequence with a free α-amino group.

The amino acids differ in structure by the substituent on their side chains. These side chains confer different chemical, physical, and structural properties to the final peptide or protein. The structures of the 20 amino acids commonly found in proteins are shown in Figure 1. Each amino acid has both a one-letter and three-letter abbreviation. These abbreviations are commonly used to simplify the written sequence of a peptide or protein.

figure1-Protein-Structure

Depending on the side-chain substituent, an amino acid can be classified as being acidic, basic or neutral. Although 20 amino acids are required for synthesis of various proteins found in humans, we can synthesize only ten. The remaining 10 are called essential amino acids and must be obtained in the diet.

The amino acid sequence of a protein is encoded in DNA. Proteins are synthesized by a series of steps called transcription (the use of a DNA strand to make a complimentary messenger RNA strand – mRNA) and translation (the mRNA sequence is used as a template to guide the synthesis of the chain of amino acids which make up the protein). Often, post-translational modifications, such as glycosylation or phosphorylation, occur which are necessary for the biological function of the protein. While the amino acid sequence makes up the primary structure of the protein, the chemical/biological properties of the protein are very much dependent on the three-dimensional or tertiary structure.

5 0
3 years ago
What is Osteochondroma? Explain.
castortr0y [4]

Answer:

The explanation is given in the explanation section.

Explanation:

Osteochondroma is a condition where the cartilage and the bone faces excess growth at the end of the bone near the growth plate. Most often, it strikes the large bones in the leg, the shoulder blade, or in the pelvis. It usually happens between the ages of 10 and 30. It affects males and females equally. The actual cause of Osteochondroma is still not known. There are two types of Osteochondroma. One type that is inherited and one type that is not inherited.

5 0
3 years ago
Read 2 more answers
What is the function of the hormone erythropoietin?
xxTIMURxx [149]

Answer:

stimulates production of red blood cells is a correct answer.

Explanation:

function of the hormone erythropoietin: stimulates production of red blood cells

Erythropoietin hormone is produced by the kidney and its function is to promotes or support the formation of the red blood cells and to provide protection to the cells from the destruction.

Erythropoietin hormone stimulates the bone marrow to produce red blood cells and the function of the red blood cells is to transport oxygen to the body.

4 0
3 years ago
What is a tumor? *
Helen [10]

Answer:

i think it is.. a mass of cancer cells

Explanation:

3 0
3 years ago
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