Why is hydrogenation used by the food industry?
A) It can create solid forms of plant-based oils.
B) It creates healthy forms of trans fats.
C) It converts trans forms of unsaturated fats to cis forms.
D) It creates a fat that is more easily broken down by the body.
E) It reduces accumulation of cholesterol in the blood vessels.
A) It can create solid forms of plant-based oils
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Bacteria and archaea use the same four bases in their DNA as eukaryotes. This supports which of the following statements?
A. All three domains arose from a common ancestor. B. DNA was the original genetic material. C. Bacteria, archaea, and eukaryotes contain the same set of genes. D. DNA evolved independently at least three times. E. Bacteria, archaea, and eukaryotes could interbreed.
The genome of modern chloroplasts is roughly 50% the size of the genome of the cyanobacterium from which it is thought to have been derived
In comparison, the genome of P. chromatophora's chromatophore is only slightly reduced relative to the size of the genome of the cyanobacterium from which it is thought to have been derived. What is a valid hypothesis that can be drawn from this comparison? A) Lytic phage infections have targeted the chloroplast genome more often than the P. chromatophora genome. B) P. chromatophora's chromatophore is the result of an evolutionarily recent endosymbiosis. C) The genome of the chloroplast ancestor contained many more introns that could be lost without harm, compared to the chromatophore's genome. D) The genome of the cyanobacteria was smaller than the genome of P. chromatophora.
A group of three mRNA nucleotides that translate to an amino acid is called a(n)
A. dictionary. B. initiator. C. codon. D. uncodon.
A lipid membrane is present in which of the following?
A) naked viruses B) enveloped viruses C) prions D) viroids E) both prions and viroids