On the back of your skull you can feel a small bump, below which is an opening where the spinal cord enters the skull. The location of this opening toward the bottom of the skull is significant in evolutionary biology for what reason?
A) It allowed for the hominin brain to grow much larger than other primates.
B) It provided greater protection for the spinal cord.
C) It occurred as a result of the change to a bipedal stance.
D) This change was necessary for the increase in size from prosimian forms to anthropoid forms.
C
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The Golgi complex functions to
A) modify and secrete proteins to the external environment. B) sort proteins used within the cell. C) both modify and sort proteins into those destined for secretion and those that function in membrane structures. D) synthesize proteins.
Which of the following statements best characterizes a euphyll?
A. It differs from a lycophyll by having a branched, rather than a single, vascular system. B. It is believed to have evolved from a branch that flattened and developed photosynthetic tissue between the branches. C. It is also called a megaphyll because it is large compared to a lycophyll. D. It evolved separately from the photosynthetic appendages of moss gametophytes. E. All of the choices provided are correct.
Naturally occurring fatty acids are typically
A) saturated. B) unsaturated. C) in the trans configuration. D) in the cis configuration. E) comprised of an odd number of carbon atoms.
In club fungi, each club-shaped cell initially ____
a. is a spore b. is a zygote c. contains a single nucleus d. is dikaryotic e. undergoes mitosis to produce spores