How Many of the Following Molecules and Ions Contain Double

question 81

Multiple Choice

How many of the following molecules and ions contain double or triple bonds?
N₂ H₂CO C₂H₄ C₂H₆ SCN^-

• A) 5
• B) 1
• C) 4
• D) 2
• E) 3

Identify situations where specific antibiotics, including polymyxin B, should not be used due to potential risks.

Understand the basic morphological and functional characteristics of ctenophores.

Describe the concept of symmetry in animals and its significance.

Explain the phylogenetic relationships among early animal lineages.

---

Definitions:

Gluteus Maximus

The largest and most superficial of the three gluteal muscles, responsible for movement of the hip and thigh.

Trunk Region

The central part of the body to which the head and limbs are attached; in humans, it consists of the thorax and abdomen.

Thorax

The part of the body between the neck and the abdomen, encased by the rib cage, and containing organs such as the heart and lungs.

Abdominopelvic Region

Refers to the combined area of the abdomen and the pelvis, enclosing the abdominal and pelvic cavities containing organs such as the stomach, liver, intestines, and bladder.