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BIO 111 EXAM Questions And Accurate Answers Graded A+
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BIO 111 EXAM Questions And AccurateAnswers Graded A+
What does Darwin find? - An. 1) The population shows variation
2) The variation is heritable to some extent
3) Reproduction and survival varies
4) It is not due to chance that some members of a population reproduce and survive
more successfully than others.
theory of evolution by natural selection, fitness is a measure of an organisms _____.
-Answer Ability to produce viable, fertile offspring
What are the terms to describe what causes an environment to change? -Answer 1)
Abiotic factors-non-living
2) Biotic factors-living
T/F Evolution is not goal driven does not necessarily always create the best organism
-Answer True e.g. antibiotic resistant TB micro evolution - creates a fitness trade off
what does acclimatization vs. adaptation mean? -Answer acclimatization is the process
in which an organism adjusts to a change in its environment, allowing it to maintain
performance across a range of environmental conditions. Adaptation means an
organism changes to perform really well in a specific environment but may perform
terribly in another environment (e.x. a bat)
What are vestigial structures? -Answer functionless characters that are homologous to
functional characters in closely related species
What are transitional features? -Answer traits in a fossil species that are intermediate
, between ancestral and derived species
Homology -Answer GENETIC- similarity in DNA, RNA, or amino acid sequences due to
inheritance from a common ancestor
DEVELOPMENTAL- similarity in embryonic form or developmental processes due to
inheritance from a common ancestor
STRUCTURE- similarity in adult organismal structures due to inheritance from a
common ancestor _+
T/F Are the wings of butterflies and birds a homologous trait? - Answer False
What does the cell theory and the theory of evolution by natural selection imply? -
Answer - all species come from preexisiting species
all species, past and present, trace ancestry to a single common ancestor
What are the components of a phylogenetic tree? - Answer - 3 major groups (domains)
of living organism on the planet (the eukaryotes / prokaryotes - bacteria and archaea
Shape of the tree continually changes
Genus vs species
How is hereditary information of cells transmitted? - Answer - DNA
Using what you have learned about natural selection, explain why the use of antibiotics
for viral infections is dangerous? - Answer • Humans are naturally hosts to a variety of
bacteria populations
• There is natural variation in these populations and some individuals within each of the
bacteria populations may be resistant to a particular antibiotic
• Inappropriate use of antibiotics applies selective pressure on the bacteria that are
already present within the patient's body. This will select for bacteria that are innately
resistant to the antibiotic. Å resistant bacteria can reproduce while others, which are
non-resistant, will die.
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