Which of the following is a current approach for determining the features of the last universal common ancestor (LUCA) (select all correct choices)?
A. Delete genes one by one in a simple DNA virus and determine which genes are essential for infection.
B. Assemble a list of genes and other features that are currently shared by plants, animals, and bacteria.
C. Assemble a list of genes and other features that are currently shared by cells representing the three domains.
D. Define the minimum set of genes necessary to support a simple cell.
E. Define the minimum set of genes necessary to support an archaeal cell.
C, D
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On a very hot summer day and a few months later on a very cold winter day, you go outside and take your
temperature. Each time your body temperature is 37 degrees Celsius. This example illustrates ____.
a. adaptation b. cellular reproduction c. respiration d. homeostasis e. digestion
Aristotle’s ideas on the natural world greatly influenced ____, who believed that the “great chain of being” extended
from ____.
a. Asian beliefs; lifeless forms to humans b. Hindu systems of thought; plants to spiritual beings c. tribal beliefs; lifeless forms to spiritual beings d. later European thinkers; plants to spiritual beings e. Thomas Malthus’ treatise on population; lifeless forms to mammals
Which area of the cerebrum deals with learned patterns or motor skills?
a. Broca's area b. Wernicke's area c. prefrontal cortex d. premotor cortex e. hippocampus
In familial hypercholesterolemia, individuals who are homozygous for the mutation lack LDL cholesterol receptors in the liver, causing high levels of serum cholesterol
This is a defect in which type of gene pathway: a biosynthetic, signal transduction, or developmental pathway?