In eukaryotic cells, chromosomes are composed of both DNA and proteins
Indicate whether the statement is true or false
TRUE
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The ____ use solar energy and organic molecules as their nutritional sources
a. chemoautotrophs b. chemoheterotrophs c. photoautotrophs d. photoheterotrophs e. Archaea
HIV and cancer cells are becoming more drug resistant over time.
Answer the following statement true (T) or false (F)
Why would a scientist trying to isolate osteoblasts look between the periosteum and the bone in a young animal to find them?
What will be an ideal response?
P680+ is said to be the strongest biological oxidizing agent. Given its function, why is this necessary?
A) It is the receptor for the most excited electron in either photosystem of photosynthesis. B) It is the molecule that transfers electrons to plastoquinone (Pq) of the electron transfer system. C) It transfers its electrons to reduce NADP+ to NADPH. D) It obtains electrons from the oxygen atom in a water molecule, so it must have a stronger attraction for electrons than oxygen has.