The Best Explanation for the Existence of a Meniscus Observed

question 64

Multiple Choice

The best explanation for the existence of a meniscus observed when water is placed in a glass tube of small diameter is

• A) the surface tension of the water causes it to "bead up" inside the container.
• B) the attractive forces between the water molecules and the walls of the container are greater than the attractive forces between the water molecules.
• C) the molecules are forced closer together because of London forces.
• D) the viscosity of the water is greater than the viscosity of the glass.
• E) the hydrogen bonds between water molecules are greater than the attractions between the water molecules and the walls of the container.

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Definitions:

IGF2 Gene

A gene that encodes the insulin-like growth factor 2, playing a crucial role in growth and development, especially fetal growth.

Lactose Repressor

The lactose repressor is a protein that binds to the promoter region of the lactose operon in bacteria, regulating the metabolism of lactose by inhibiting the transcription of lactose-utilizing genes.

Transcription

The process in which the DNA sequence in a gene is copied into mRNA, serving as the first step in gene expression.

Lactose Operon

A gene regulatory mechanism in bacteria that allows the cells to adapt to the presence of lactose, enabling the digestion of this sugar when it is available.