What type of bonding is likely to occur between two water molecules or strands of DNA?
A. covalent.
B. ionic.
C. hydrogen.
D. both hydrogen and covalent.
E. both hydrogen and ionic.
C. hydrogen.
You might also like to view...
Regarding CO2 fixation mechanisms in the autotrophic green sulfur bacteria,
A) Chlorobium uses the reverse citric acid cycle, and Chloroflexus uses the hydroxypropionate pathway. B) Chlorobium uses the hydroxypropionate pathway, and Chloroflexus uses the reverse citric acid cycle. C) both Chlorobium and Chloroflexus use the reverse citric acid cycle. D) both Chlorobium and Chloroflexus use the hydroxypropionate pathway.
Which receptor type makes you aware that your appendix is inflamed?
a. mechanoreceptors b. photoreceptors
c. chemoreceptors d. thermoreceptors e. nociceptors
Which of the following systems / organs is incorrectly matched with its role in maintaining homeostasis?
A. Respiratory system - transports oxygen and carbon dioxide to the cells throughout the body. B. Digestive system - provides nutrient molecules to the cells. C. Pancreas secretes insulin when the body has an elevated blood glucose level. D. Liver - removes excess glycogen from the blood and stores it as glucose. E. All of the systems / organs listed are correctly matched with their role in maintaining homeostasis.
Arsenic concentrates in the ___ of the person who was poisoned.
Fill in the blank(s) with the appropriate word(s).