Nearly all viruses are constructed of
A. RNA with a protein wrapping, called a capsid.
B. DNA with a protein wrapping, called a capsid.
C. either DNA or RNA with a protein wrapping, called a capsid.
D. either DNA or RNA, however many do not have the capsid.
Answer: C
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What are the two most important variables for cells to survive?
a. Temperature and pH b. Temperature and solute concentration c. Solute concentration and nutrient levels d. Solute concentration and pH e. Temperature and nutrient levels
Analogous structures serve the same function, are similarly constructed, and are inherited from a common ancestor.
Answer the following statement true (T) or false (F)
Which of the following is true regarding saturated fatty acids?
A) They are the predominant fatty acid in corn oil. B) Theyhave double bonds between carbon atoms of the fatty acids. C) They are the principal molecules in lard and butter. D) They are usually liquid at room temperature. E) They are usually produced by plants.
C.elegans is a model organism and was the first eukaryotic organism to have its genome sequenced
The free-living nematode is often used in laboratories investigating nervous system development with all 302 of its neurons and their effectors categorized. Interesting control mechanisms have been investigated with reproduction, particularly with egg-laying in the nematode. There are 16 muscles, 2 types of neurons, and multiple receptors involved in the process of laying eggs in C.elegans, and there are mutations in all of those structures for the study of the process. One particular mutation that prevents the laying of eggs by the worm is rescued by the neurotransmitter, serotonin. That rescue suggests that the mutation is most likely in which of the following? A) a post-synaptic neuron involved in egg-laying B) a pre-synaptic neuron involved in egg-laying C) a receptor for serotonin on cells needed for egg-laying D) one of the muscles needed for egg-laying