A plant's contact with a solid object may result in a change of direction of growth, in a process called ________
a. thigmotropism
b. gravitropism
c. mechanical stress
d. phototropism
a
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Of the following, the majority of nutrient absorption takes place in the ______.
a) small intestine b) esophagus c) stomach d) pancreas e) colon
Why is the evolutionary origin of all eukaryotes no longer considered to be a simple evolution from a single Archaea species?
a. Archaea contain insufficient genetic material to explain eukaryotic evolution. b. Fossil records provide evidence that Archaea evolved after eukaryotes. c. Some eukaryotic genes share more similarity with Bacteria than Archaea. d. Some eukaryotes contain mitochondria, which are invariably fatal to Archaea.
The cuticle of leaves and stems is one modification that enabled plants to move onto land
Indicate whether the statement is true or false
Which type of molecule NEVER contains a phosphate group?
A) triglycerides B) phospholipid C) nucleic acid D) ATP