What happens when a photosystem absorbs energy?
a. Protons are ejected and enter an electron transfer chain
b. Carbon dioxide is formed.
c. Glucose is broken down.
d. Electrons are ejected and enter an electron transfer chain.
e. Electrons are absorbed and released from the electron transfer chain.
d
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Which of the following is a difference between RNA and DNA?
A) RNA is single-stranded and DNA is usually triple-stranded. B) DNA contains adenine and RNA does not. C) RNA has ribose sugar and DNA has deoxyribose sugar. D) RNA is made from nucleotide monomers and DNA is made from amino acid monomers.
Diffusion tensor imaging (DTI) is a type of ____
a. MRI b. PET scan c. X-ray d. sonogram e. CT scan
Tom Curtis wrote a letter in 2006 to try and encourage research into ____
a. rare plants b. microorganisms c. agricultural crops d. prairie grasses e. invasive species
When we watch Olympic athletes perform, we are admiring the expert control of which systems working together?
A. skeletal, endocrine, and circulatory systems B. muscular, integumentary, and circulatory systems C. nervous, circulatory, and skeletal systems D. nervous, muscular, and skeletal systems