Organisms that use the Calvin cycle to fix CO2 are:
a) chemoautotrophs
b) chemoheterotrophs
c) chemoautotrophs and chemoheterotrophs
d) photoautotrophs and chemoautotrophs
Answer: d) photoautotrophs and chemoautotrophs
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After completing the nucleotide sequence of a microbial genome, computer translation of DNA sequence allows enzymes to be identified based on a short pattern of amino acid sequence called a contig that corresponds to the active site of the enzyme.
Answer the following statement true (T) or false (F)
Fertilization take place within a woman's body in which of the following ART techniques?
a. GIFT b. ICSI c. IVF d. ZIFT e. PGD
Which of the following stimuli will NOT activate a nociceptor?
A. extremes in temperature B. very intense mechanical stimulation C. specific chemicals in the extracellular fluid D. chemicals released by injured cells E. external odorant molecules
A deficiency of which essential element leads to intervenal chlorosis?
a. calcium b. potassium c. magnesium d. sulfur