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frozen [14]
3 years ago
5

Which describes sand

Biology
2 answers:
Rufina [12.5K]3 years ago
5 0

A. find-graned is your answer

Rufina [12.5K]3 years ago
3 0

Your answer is: A) Fine-grained

<em>It does not drain water easily, it is NOT good for growing crops(that's soil), </em>

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What is the difference between a gene and a chromosome?
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Answer:

It would be B

Explanation:

Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

4 0
3 years ago
Which of the following is a covalent compound?
V125BC [204]

Answer:

Water is a covalent compound.

Explanation:

covalent compounds are individual molecules characterized by the sharing of electrons between two or more atoms. Two atoms with similar electronegativity will not exchange an electron from their outermost shell; the atoms instead share electrons so that their valence electron shell is filled.

Example:

Examples of compounds that contain only covalent bonds are methane (CH4), carbon monoxide (CO), Water (H2O) and iodine monobromide (IBr).

Properties:

1. At room temperature and normal atmospheric pressure, covalent compounds may exist as a solid, a liquid, or a gas.

2. Covalent compounds do not exhibit any electrical conductivity, either in pure form or when dissolved in water.

3. Covalent compounds have lower melting and boiling points.

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3 years ago
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B. chloroplast carrries out photo synthesis
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What levels of protein structure would be affected if all hydrogen bonding interactions were prevented? check all that apply?
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The proteins exhibit four levels of organization:  

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2. Secondary structure: It is a localized twisting of the polypeptide chain by producing a hydrogen bond. Two types are formed, that is, the alpha helix and beta pleated sheet.  

3. Tertiary structure: It refers to the three-dimensional composition of a polypeptide chain. The folding is not regular as it is in secondary composition. It produces ionic bonds, hydrophobic interactions, disulfide bond, and hydrogen bond amongst the polypeptide chains.  

4. Quaternary structure: It comprises an amalgamation of two or more polypeptide chains that functions as a single functional unit. The bonds are identical as in tertiary composition.  

Thus, the levels of secondary, tertiary, and quaternary protein structure would get affected if all the hydrogen bonding associations were inhibited.  


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Which of the following correctly describes accessory organs participating in chemical digestion?
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