Each Time the Water in a Cell Freezes Slowly, Long

question 43

Multiple Choice

Each time the water in a cell freezes slowly, long sharp crystals spear through the membrane structures of the cell. However, in the frozen state, virtually no chemical reactions occur. The most likely explanation for the bad taste of meat that has "freezer burn" from repeated freezing is the destruction of

• A) the Golgi bodies and their vesicles.
• B) lysosomes and resultant autodigestion.
• C) rough endoplasmic reticulum causing the release of ribosomes.
• D) ribosomes causing them to break into subunits.
• E) the nuclear membrane causing mixing of nucleoplasm and cytoplasm.

Understand the concept of hybrid atomic orbitals and their overlap to form molecular orbitals.

Calculate the HCH, CCC, and CCN bond angles in different organic molecules.

Correlate molecular structure with hybridization to anticipate molecular behaviors and properties.

Explain the molecular shapes and hybridization states based on structural formulas.