Phylogenetic trees should be viewed as:
a) intellectual exercises, not to be interpreted literally.
b) true genealogical relationships of species.
c) hypotheses regarding evolutionary relationships of groups of organisms.
d) the result of vertical, but never horizontal, gene transfer.
e) representations of allopatric speciation events.
Ans: c) hypotheses regarding evolutionary relationships of groups of organisms.
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Choose all that apply. A concentration gradient is exhibited when
_____ the room temperature is 34 degree Celsius and the outside air is 34 degrees Celsius. _____ intracellular fluid has 5% solute and extracellular fluid has 0.8% solute concentration. _____ during rest, muscle and liver cells contain high glycogen concentration and blood contains lower concentrations. _____ the pCO2 changes from 45 to 35 mmHg in the alveoli of lungs.
A biological safety cabinet filters out more microorganisms than an N95 mask.
Answer the following statement true (T) or false (F)
The ________ functions as the sensory area for touch, vision, hearing, and olfaction as well as association areas for interpreting sensations, language, thinking, decision making, self-awareness, creativity, and storing memories
Fill in the blank(s) with correct word
Archaea differ from bacteria in that archaea
A) have diverse cell wall compositions. B) lack nuclei. C) use organic compounds for food. D) reproduce by binary fission. E) are prokaryotic.