Which of the following explains why photosystem units contain a high proportion of antenna pigments compared to reaction centers?
a. antenna pigments split water
b. antenna pigments reduce the reaction centers
c. antenna pigment contain rubisco
d. antenna pigments allow more wavelengths of light and more photons to be captured, increasing the efficiency of light capture.

The correct answer is: D. Antenna pigments allow more wavelengths of light and more photons to be captured, increasing the efficiency of light capture.

The photosynthetic pigments can be part of the antenna pigments or part of the reaction center. The role of the antenna pigments (large number of protein-bound pigment molecules) is to absorb photons and transfer their energy to the reaction center. Simply saying, antenna pigments are light-harvesting complexes. They are composed of polypeptides, that bind chlorophyll a, chlorophyll b, carotene and xanthophylls.

you know that this symptom is misleading and quite often is related to: heart attack

a heart attack is a condition that occurs when the blood flow that transports oxygen to the heart muscle is damaged or cut off completely. the coronary arteries that supply the heart muscle with blood flow can be blocked by the accumulation of plaque. also, when the plaque within the heart artery breaks, it creates blood clot that can also hinder the blood flow. men that are over 45years of age and women that are over 55years of age are at risk of having a heart attack. the symptoms of a heart attack include chest discomfort, chest pain, coughing, and shortness of breath.