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nika2105 [10]
3 years ago
14

Whitch of the following statements is true? Answers in the picture

Biology
2 answers:
Tatiana [17]3 years ago
5 0
Water expands when it freezes
dangina [55]3 years ago
4 0
Answer:B
Hope I help out?
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if two different types of particles have the same speed in a medium,why is chromatography process not suitable? write with a rea
vekshin1

Explanation:

When using chromatography, the 2 solutes in the solvent paper should have different Rf values from the base line to identify them as different compounds.

If they were to have the same speed in the solvent, they would appear as 1 dot instead of 2 separate dots, which is a false reading.

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2 years ago
Which state of matter is the most dense?
Lubov Fominskaja [6]
Solid. it's all stuck and linked together, while liquids are flowing along and gases fly around wherever they please. Hope this helps
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3 years ago
During nitrification, _____.
Serga [27]
<span>During nitrification, ammonia is changed back into nitrate.</span>

Nitrification is a three-step process of oxidation of ammonia. It is an aerobic process performed by small groups of autotrophic bacteria (<span>Nitrosomonas, Nitrobacter</span>).
First step- ammonia to hydroxylamine,
Second step-hydroxylamine to nitrite,
Third step-nitrite to nitrate.
Nitrification together with ammonification is part of a nitrogen cycle.
3 0
3 years ago
Plz do this I will give brainliest and you get 100 points!
ella [17]

Answer: c cuvuyvuygv jghvhghv hjhcv86 rdf rt6fyc f cututrcut  fyiuiyc vjycf g

Explanation:

7 0
2 years ago
What three elements do all macromolecules share? Explain how the chemical properties of lipids, nucleic acids, proteins, and ami
Natasha2012 [34]

Answer

Macromolecules in human body

             The macromolecules found in human body are:

1. Carbohydrate,

2. Proteins

3. Lipids, and  

4. Nucleic acids.  

Elements they common share

             All these macromolecules have three elements in common which are:

1. Carbon

2. Hydrogen, and

3. Oxygen.  

                   These elements constitute about 95% of human body.

Difference in Chemical properties

                    Carbohydrate is composed of glucose monomers, which may have aldehyde functional group or ketone functional group. Protein is composed of monomers called amino acids. Each amino acid has carboxylic functional group, amino group, alkyl or aryl group and hydrogen atom. Lipid is composed of fatty acids and glycerol. While nucleic acid is composed of monomer called nucleotide. Each nucleotide is composed of pentose sugar, phosphate group and nitrogenous group. Due to the presence of different functional groups all these macromolecules have chemical properties different from each one


3 0
2 years ago
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