Why is carbon said to provide a “backbone” in many molecules?(1 point)

Question

Responses

Carbon atoms have half-full shells of electrons, allowing electrical signals to pass through them easily.
Carbon atoms have half-full shells of electrons, allowing electrical signals to pass through them easily.

Carbon atoms have long narrow shapes, allowing many other atoms to attach to them.
Carbon atoms have long narrow shapes, allowing many other atoms to attach to them.

Carbon atoms have full shells of electrons, allowing electrical signals to pass through them easily.
Carbon atoms have full shells of electrons, allowing electrical signals to pass through them easily.

Carbon atoms can form chains and branches with each other, and other atoms can attach to these.

Answer 1

Carbon atoms can form chains and branches with each other, and other atoms can attach to these.

Answer 2

Which option describes the structure of the electron shells in a neutral carbon atom?(1 point)
Responses

The inner shell is complete with two electrons. The outer shell is incomplete with four electrons.
The inner shell is complete with two electrons. The outer shell is incomplete with four electrons.

The inner shell is incomplete with three electrons. The outer shell is incomplete with three electrons.
The inner shell is incomplete with three electrons. The outer shell is incomplete with three electrons.

The inner shell is complete with four electrons. The outer shell is incomplete with two electrons.
The inner shell is complete with four electrons. The outer shell is incomplete with two electrons.

The inner shell is complete with three electrons. The outer shell is incomplete with three electrons.

Answer 3

The inner shell is complete with two electrons. The outer shell is incomplete with four electrons.

Answer 4

Which type of bonds can carbon atoms form with other carbon atoms?(1 point)
Responses

double, triple, and quadruple bonds
double, triple, and quadruple bonds

single, double, and triple bonds
single, double, and triple bonds

single and double bonds
single and double bonds

double and triple bonds

Answer 5

single, double, and triple bonds

Answer 6

Which structure defines the sulfhydryl functional group?(1 point)
Responses

SH
SH

SOH
SOH

OH
OH

SH2

Answer 7

SH

Answer 8

Which option explains why this amino acid can act as both an acid and a base?

(1 point)
Responses

It contains both an amino functional group and a carboxyl functional group. In a solution, the amino group can decrease acidity, while the carboxyl group can increase acidity.
It contains both an amino functional group and a carboxyl functional group. In a solution, the amino group can decrease acidity, while the carboxyl group can increase acidity.

It contains both an amino functional group and a methyl functional group. In a solution, the amino group can increase acidity, while the methyl group can decrease acidity.
It contains both an amino functional group and a methyl functional group. In a solution, the amino group can increase acidity, while the methyl group can decrease acidity.

It contains both an amino functional group and a carboxyl functional group. In a solution, the amino group can increase acidity, while the carboxyl group can decrease acidity.
It contains both an amino functional group and a carboxyl functional group. In a solution, the amino group can increase acidity, while the carboxyl group can decrease acidity.

It contains both an amino functional group and a methyl functional group. In a solution, the amino group can decrease acidity, while the methyl group can increase acidity.

Answer 9

It contains both an amino functional group and a carboxyl functional group. In a solution, the amino group can decrease acidity, while the carboxyl group can increase acidity.