science & technology Online Quiz - 166

Blueberries belong to the genus Vaccinium. 'Vaccinium selections' refers to cultivated blueberry varieties. Malus is apples, Rubus is blackberries, and Ficus carica is fig.

Oranges belong to the genus Citrus. 'Citrus spp.' indicates multiple citrus species including oranges. Prunus persica nucipersica is nectarine, Citrus aurantiifolia is lime, and Citrus limon is lemon.

The common fig is Ficus carica, the only widely cultivated fig species. Vaccinium is blueberries, Malus is apples, and Rubus is blackberries.

Limes are Citrus aurantiifolia, commonly known as Key Lime. Citrus spp. is the broader citrus genus, Prunus perscia (typo for persica) is peach, and Citrus limon is lemon.

Lemons are Citrus limon, a distinct citrus species. Citrus aurantiifolia is lime, Citrus spp. is the citrus genus, and Vitis spp. is grapes.

Peaches are Prunus persica. 'Prunus perscia' (with typo) is the same species, while 'Prunus persica nucipersica' is the nectarine variety. Rubus is blackberries and Vitis spp. is grapes.

Bone marrow contains large populations of hematopoietic stem cells that continuously produce blood cells throughout life. While stem cells exist in many tissues, bone marrow is the richest source in the adult human body and is routinely harvested for medical treatments.

Chlorofluorocarbons (CFCs) release chlorine atoms in the stratosphere when broken down by UV radiation, which then catalytically destroy ozone molecules. The Montreal Protocol was established to phase out CFC production due to their severe environmental impact.

Acid rain is an environmental phenomenon caused by pollution, while photosynthesis, stomata, and carbon/oxygen cycles are all biological processes related to plants. Acid rain is the odd one out as it's harmful rather than a natural biological function.

Newton's three laws of motion describe the relationship between forces and motion (1st: inertia, 2nd: F=ma, 3rd: action-reaction). Newton's law of universal gravitation is a separate theory about gravitational attraction between masses, not part of the three laws of motion.

Different enzymes catalyze different steps of protein synthesis - aminoacyl-tRNA synthetases, peptidyl transferase, etc. There's no single enzyme responsible for the entire process. Option A correctly states that it depends on the specific protein and enzymatic step involved.

This is the law of conservation of energy - one of the fundamental principles of physics. Energy can change forms (kinetic to potential, chemical to thermal, etc.) but the total energy in a closed system remains constant - it cannot be created or destroyed.

Craig Venter was the first scientist to sequence his own complete genome through his company Celera Genomics, completing this in 2007 as part of the Human Genome Project. He pioneered shotgun sequencing techniques.

VIBGYOR represents the seven colors of the rainbow in order: Violet, Indigo, Blue, Green, Yellow, Orange, Red. Grey is not a spectral color - it's achromatic and doesn't appear in the rainbow spectrum.

Light travels at approximately 300,000 km/s. The Earth is about 150 million km from the Sun, so light takes approximately 500 seconds or 8 minutes 20 seconds to reach us. '8 minutes' is the closest correct approximation.

Terrestrial planets are rocky planets that are primarily composed of silicate rocks and metals. In our solar system, the four terrestrial planets are Mercury, Venus, Earth, and Mars - all located in the inner solar system. Jupiter, Saturn, Uranus, and Neptune are gas/ice giants, while Pluto is a dwarf planet.

In astronomy, Uranus and Neptune are classified as ice giants because they are composed mostly of elements heavier than hydrogen and helium, such as oxygen, carbon, nitrogen, and sulfur. Jupiter and Saturn are gas giants, and Pluto is a dwarf planet.

As of current astronomical classification, the International Astronomical Union (IAU) officially recognizes 5 dwarf planets in our solar system: Ceres, Pluto, Eris, Haumea, and Makemake. There are several other candidate dwarf planets that may be added to this list in the future.

Nicolaus Copernicus was the first to develop a comprehensive mathematical model (heliocentric model) proposing that Earth revolves around the Sun, published in his work 'De revolutionibus orbium coelestium' (1543). While Aristarchus of Samos had proposed the idea earlier, Copernicus was the first to provide mathematical predictions and a complete model.