Biology, 27.03.2020 17:56 idcbrooo

Select the statement that correctly compares an aldose to a ketose.

a. A ketose has a carbon backbone with an aldehyde group at the end of the molecule, whereas an aldose has a ketone group at the end of the molecule.
b. Both have a carbon backbone where a ketose has a ketone group at the end of the molecule, and an aldose has an aldehyde group at the end of the molecule.
c. A ketose has a carbon backbone with a ketone group at the end of the molecule, whereas an aldose has an aldehyde group at the end of the molecule.
d. Both have a carbon backbone where a ketose has a ketone group on the second carbon in the molecule, and an aldose has an aldehyde group at the end of the molecule.

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d). Both have a carbon backbone where a ketose has a ketone group on the second carbon in the molecule, and an aldose has an aldehyde group at the end of the molecule.

Explanation: There are two families of monosaccharides: aldoses and ketoses.

The back-bones of common monosaccharides are unbleached carbon chains in which all the carbon atoms are linked by single bonds. When these monosaccharides are in an open chain form, one of the carbon atoms is double-bonded to an oxygen atom to form a carbonyl group.

When the carbonyl group has a hydrogen atom bonded to it, it is called an aldehyde group and when the carbonyl group is bonded to two carbon atoms, it is called a ketone group.

A Monosaccharide in which the aldehyde group is at the end of the carbon chain of the molecule is called an aldose while a monosaccharide in which the ketone group is on the second carbon atom of the molecule is called a ketose.

Answer from: Quest

q: compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city,

comparing this to the inside of a food building/company.

plasma membrane - building's walls

all cells are surrounded by a plasma membrane, which protects the cell from its environment, keeping toxic substances out of the cell. it regulates which molecules are allowed to enter and exit the cell.

nucleus - the big boss

regulates all cell activity such as cellular metabolism, and growth in addition to storing and maintaining the cell's dna for transcription and replication. determines what proteins to make.

cytoplasm - working areas

contains the organelles; site of most cell activity

endoplasmic reticulum - engineer's work area

the place where ribosomes do their working activity.

ribosomes - engineers

builds the proteins.

golgi apparatus - pickup truck drivers

prepares proteins for use or export.

lysosomes - investigators

responsible for breaking down and absorbing materials taken in by the cell.

cytoskeleton - renovators

maintains cell shape.

mitochondria/chloroplasts - materials scientist

transforms one form of energy into another.

Answer from: Quest

it takes hundreds of years to become stable.

if you have another question lmk.

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Select the statement that correctly compares an aldose to a ketose.

a. A ketose has a c...

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