Biology Quiz 3

Both male and female mosquitoes eat the same things—Plant sap, nectar and plant derivatives—for energy. But only female mosquitoes imbibe a blood meal.

The primary function of sweat glands is to keep the core body temperature at approximately 37°C by releasing sweat in a hot environment or during physical activity. As the water in the sweat evaporates, the surface of the skin cools.

Tranquilizer is a drug which is designed for the treatment of anxiety, fear, tension, agitation, and disturbances of the mind, specifically to reduce states of anxiety and bring about calmness.

Pulmonary Vein brings clean blood from the lungs into the heart. Its function is to transport oxygenated blood from the lung alveoli into the left atria.

Outside the nucleus, DNA is found in Mitochondria. Most DNA is located in the cell nucleus (where it is called nucleus DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA).

All eukaryotic cells have a surrounding plasma membrane (cell membrane). The plasma membrane is made up of a phospholipid bilayer with embedded proteins that separate the internal contents of the cell from its surrounding environment.

Casuarina is a xerophyte plant. A xerophyte is a species of plant that has adaptations to survive in an environment with little liquid water, such as a desert or ice-covered region. Popular examples of xerophytes are Casuarina, cacti, pineapple, etc.

The typical composition of exhaled air is about 18 percent O₂, 78 percent N₂, and 4 percent CO₂.

Vitamin K–dependent coagulation proteins are synthesized by the liver. The liver synthesizes many of the clotting factors necessary for blood coagulation.

Biogas is the mixture of gases produced by the breakdown of organic matter in the absence of oxygen (anaerobically), primarily consisting of methane and carbon dioxide. Biogas can be produced from raw materials such as agricultural waste, municipal waste, plant material, sewage, green waste or food waste. Although, cattle dung has been recognised as the chief raw material for biogas plants.