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Nat2105 [25]
3 years ago
14

This biome contains animals such as snow hares, foxes, and wolves

Biology
1 answer:
irinina [24]3 years ago
8 0

Answer:

The Arctic Tundra!

Explanation:

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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
MRSA has emerged as a serious infectious disease, with the first case of methicillin-resistant S. aureus being detected in 1961.
andreev551 [17]

Answer:

All of the options are true for a MRSA infection.

Explanation:

<em>Staphylococcus aureus</em> is one of the most frequent pathogens causing hospital and community infections. <em>S. aureus</em> can become very easy methicillin resistant (called MRSA isolates) and others beta-lactam antibiotics (are the ones widely used to treat infections) and usually can be resistant to other class of antibiotics, become a  very strong bacteria making treatment options very limited. MRSA isolates can rapidly transfer the methicillin resistance to other species of S<em>taphylococcus</em> and some other bacteria. Also <em>S. aureus</em> can acquire other antibiotic resistant genes making a deadly bacterium for its strong resistance. It is in search how the bacterium acquire this antibiotics resistance ( and other virulence factors genes) and the mechanism involve to develop new drugs to treat  MRSA infections  with the hope that can´t develop resistance to this new drugs.

3 0
3 years ago
Which has the greatest inertia?<br><br>A.  bird<br><br>B.  car<br><br>C.  jumbo jet
arlik [135]
The answer is b. car
7 0
3 years ago
Compare and contrast the body of a crayfish with that of an insect. please help
Papessa [141]

Insects have a distinct set of characteristics which all must have if they are insects. They must have three pairs of legs (even though sometimes they may appear different as larvae, such as caterpillars), a set of mouth parts, and a head, thorax, and abdomen.


3 0
3 years ago
Once absorbed the majority of glucose is transported to
ycow [4]

Answer: Liver

Glucose is the most important fuel source for the body, specifically the brain. It is absorbed through the mucosal lining into the epithelial cells of the intestine by active transport via sodium-dependent hexose transporter. From the epithelial cells, glucose is moved into the surrounding capillaries by facilitated diffusion into the liver. Once in the liver, glucose is stored as glycogen.

6 0
3 years ago
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