Chlorophyll, a photo-receptive pigment, allows plants to absorb sunlight and synthesize it into carbohydrates and oxygen. The basic formula for photosynthesis takes 6 molecules of carbon dioxide and 6 molecules of water, reacts them in the presence of chlorophyll and sunlight (a catalyst), and converts them into 1 molecule of glucose (C₆H₁₂O₆) and 6 molecules of oxygen. Chlorophyll is a chlorin pigment, which is structurally similar to and produced through the same metabolic pathway as other porphyrin pigments such as heme. At the center of the chlorin ring is a magnesium ion. The molecular formula of C₅₅H₇₀O₆N₄ Mg and a structure of (2-formyl)chlorophyll has been deduced based on NMR, optical and mass spectra.

Correct Option: D

Chlorophyll, a photo-receptive pigment, allows plants to absorb sunlight and synthesize it into carbohydrates and oxygen. The basic formula for photosynthesis takes 6 molecules of carbon dioxide and 6 molecules of water, reacts them in the presence of chlorophyll and sunlight (a catalyst), and converts them into 1 molecule of glucose (C₆H₁₂O₆) and 6 molecules of oxygen. Chlorophyll is a chlorin pigment, which is structurally similar to and produced through the same metabolic pathway as other porphyrin pigments such as heme. At the center of the chlorin ring is a magnesium ion. The molecular formula of C₅₅H₇₀O₆N₄ Mg and a structure of (2-formyl)chlorophyll has been deduced based on NMR, optical and mass spectra.

Fusus vesiculosus is a brown seaweed and is also known as bladderwrack or red algae, according to the National Institutes of Health (NIH). Red marine algae and other seaweeds are common components of Asian diets and are often used in dietary supplements. The high iodine content in red marine algae can lead to hypothyroidism or hyperthyroidism.

Correct Option: D

Fusus vesiculosus is a brown seaweed and is also known as bladderwrack or red algae, according to the National Institutes of Health (NIH). Red marine algae and other seaweeds are common components of Asian diets and are often used in dietary supplements. The high iodine content in red marine algae can lead to hypothyroidism or hyperthyroidism.

Eye color is a polygenic phenotypic character determined by 2 distinct factors: the pigmentation of the eye’s iris and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris. In humans, the pigmentation of the iris varies from light brown to black, depending on the concentration of melanin in the iris pigment epithelium (located on the back of the iris), the melanin content within the iris stroma (located at the front of the iris), and the cellular density of the stroma. The appearance of blue, green, as well as hazel eyes results from the Rayleigh scattering of light in the stroma, a phenomenon similar to that which accounts for the blueness of the sky. Neither blue nor green pigments are ever present in the human iris or ocular fluid.

Correct Option: C

Eye color is a polygenic phenotypic character determined by 2 distinct factors: the pigmentation of the eye’s iris and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris. In humans, the pigmentation of the iris varies from light brown to black, depending on the concentration of melanin in the iris pigment epithelium (located on the back of the iris), the melanin content within the iris stroma (located at the front of the iris), and the cellular density of the stroma. The appearance of blue, green, as well as hazel eyes results from the Rayleigh scattering of light in the stroma, a phenomenon similar to that which accounts for the blueness of the sky. Neither blue nor green pigments are ever present in the human iris or ocular fluid.

A heart attack occurs if the flow of oxygen-rich blood to a section of heart muscle suddenly becomes blocked. If blood flow isn’t restored quickly, the section of heart muscle begins to die. Heart attacks most often occur as a result of coronary heart disease (CHD), also called coronary artery disease. CHD is a condition in which a waxy substance called plaque (plak) builds up inside the coronary arteries. These arteries supply oxygen-rich blood to the heart.

Correct Option: C

A heart attack occurs if the flow of oxygen-rich blood to a section of heart muscle suddenly becomes blocked. If blood flow isn’t restored quickly, the section of heart muscle begins to die. Heart attacks most often occur as a result of coronary heart disease (CHD), also called coronary artery disease. CHD is a condition in which a waxy substance called plaque (plak) builds up inside the coronary arteries. These arteries supply oxygen-rich blood to the heart.

Births in elephants tend to take place during the rains. Calves are born 85 cm (33 in) tall and weigh around 120 kg (260 lb). The sperm whale produces the largest baby that weighs about 1 ton at birth. The newborn can instinctively swim for the first 10 seconds with help from its mother and swim alone within 30 minutes after birth. When baby blue whales are first born, they weigh over 3,000 kg (3 tones), about the same weight as a fully grown hippopotamus. Once born, a baby blue whale takes two years to reach a weight of 26,000 kg (26 tones). No other living creature grows so quickly.

Correct Option: D

Births in elephants tend to take place during the rains. Calves are born 85 cm (33 in) tall and weigh around 120 kg (260 lb). The sperm whale produces the largest baby that weighs about 1 ton at birth. The newborn can instinctively swim for the first 10 seconds with help from its mother and swim alone within 30 minutes after birth. When baby blue whales are first born, they weigh over 3,000 kg (3 tones), about the same weight as a fully grown hippopotamus. Once born, a baby blue whale takes two years to reach a weight of 26,000 kg (26 tones). No other living creature grows so quickly.