Which one of the following rows best represents a gas in relation to a solid or liquid of the same compound?
A. Row 1
B. Row 2
C. Row 3
D. Row 4
D. Row 4
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If you were going to develop a new antibiotic against bacteria, you would probably need to become an expert on which of these carbohydrates?
A) glycogen B) chitin C) peptidoglycan D) cellulose E) starch
Which of the following protist lineages is appropriately paired with its supportive and/or protective structure?
A) Diatoms have an intricate, chalky, chambered calcium carbonate shell. B) Parabasalids have an internal support rod, made of cross-linked microtubules, that runs the length of the cell. C) Alveolates have tough plates in the cell wall that are made up of cellulose. D) Euglenoids cover themselves with tiny pebbles. E) Dinoflagellates are surrounded by a glass-like, silicone dioxide cell wall.
Ice floats in liquid water because
a. ice forms hydrogen bonds with the surface of liquid water. b. ice forms hydrogen bonds but liquid water does not. c. the hydrogen bonds of liquid water are fixed in place. d. liquid water forms hydrogen bonds but ice does not. e. the distance between water molecules is maximized due to the hydrogen bonds which are fixed in place.
Select the correct statement about the energy and/or nutrient that makes life possible.
A) both are recycled, nutrients when an organism dies and energy when it is eaten B) the sun provides energy in the form of heat C) producers obtain both energy and nutrients from the environment while consumers obtain both by using the tissues of producers or other organisms D) nutrients move through the ecosystem in a continuous directional flow E) all of the choices