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kvasek [131]
3 years ago
11

Water about 39 Fahrenheit is more dense then water at 32 Fahrenheit why would living organisms in the lake die if the water free

zing point was denser then 4
Biology
1 answer:
VashaNatasha [74]3 years ago
7 0
The freezing water would sink to the bottom and freeze the lake water from the bottom up.
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Most of a cell's molecules can be classified as belonging to one of four major classes: lipids, carbohydrates, nucleotides, or a
goblinko [34]

Answer:

Diagram, in attachments

Explanation:

From the left side of the screen to the right,that is from a structure with a sugar structure with two other molecules  attached to it.

The first molecular structure is Nucleotides. Reasons it contains the middle ribose sugar(5-carbon)connected to the phosphate group and  Nitrogenous bases.This is the structure of nucleotides  and when this is joined by phosphodiester bond between one a nucleotide, to the phosphate group of another  nucleotide molecule  it forms a nucleic acid molecule.

The second structure from left to right with  long carbon chains, it is  a lipid.That js an Ester formed from the reaction of fatty acids with alcohol glycerol.

However, the presence of Phophate group in structure makes it different from a normal tryglycerides.The phosphate group has replaced  one of the  the three fatty acid molecules.Therefore it is called Phospholipid.With one hydropholic ends(phosphate ends) and the hyrophobic end the  carbon chain,with one unsaturated. The lipids molecules are held together my ester bonds.

The next structure is the protein structure(dipeptide).Genrally amino acid is made up of the central Alpha carbon connected on the right by the Carbonyl group(coo-) on the left by the Amine(NH2) group.The R-group which determines the type of amino acids  and hyrdogen atom.In the above structure condensation reaction  has occurred between the hydrogen atom  of  the amine group and carbonyl group of the other amino unit to form a dipeptide.The  bond formed from the condensation is the peptide bond.

The last structure on the far right are the carbohydrate -ring structure and the straight chains.The functional groups of the CHO  -Carbonyl group and hydroxyl group are glues to this.

3 0
3 years ago
In photosynthesis, what gives energy to the electron moving through the electron transport chain?
snow_tiger [21]

In photosynthesis of plants, the light gives energy to the electrons moving through the electron transport chain. This Light energy is then converted to chemical energy, which produces ATP; an energy storage molecule and NADPH, a reduced electron carrier. Moreover, <span>light energy is used to pump protons across a membrane to produce a proton-motive force.</span>

5 0
3 years ago
Read 2 more answers
A solution that is hypotonic to a cell has fewer solutes than the cell. the same concentration of solutes as the cell. more solu
Simora [160]

Answer:

2(h - 8) - h = h - 16 2. 4(x - 3) + 5 = 1 3. 70 = -7(-2 -2z) 4. -2x + 4 = 2(4x-3)-3(-8+4x

Explanation:

2(h - 8) - h = h - 16 2. 4(x - 3) + 5 = 1 3. 70 = -7(-2 -2z) 4. -2x + 4 = 2(4x-3)-3(-8+4x

5 0
3 years ago
Amylase catalyzes a reaction with starch to directly create _______.
mario62 [17]

Maltose is produced instantly when amylase reacts with starch.

Starch is a polysaccharide molecule made of glucose units. The chemical formula of the starch is written as (C₆H₁₀O₅)ₙ. The starch consists of amylose and amylopectin. The glucose units in this starch are linked with the help of two kinds of bonds α 1,4 glycosidic linkages and α 1,6 glycosidic linkages.

This starch molecule is first hydrolyzed into shorter polysaccharides, dextrins, and maltose with a help of an enzyme called amylase. The maltose can be further hydrolyzed into glucose units with the help of the maltase enzyme.

Therefore, the blank can be filled with maltose.

To know more about amylase:

brainly.com/question/2878489

#SPJ4

7 0
1 year ago
When humans remove vegetation from an area, the water cycle is MOST directly affected in which way?
sesenic [268]
The anwser is (C) see evaporation area would decrease
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4 years ago
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