Energy is defined as
A. change.
B. the capacity to do work.
C. heat.
D. movement.
Answer: B
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In the construction of a phylogenetic tree, a ______ considers the overall similarities among a group of species without trying to understand their evolutionary history, whereas a ______ considers the possible pathways of evolution to find the best possible tree.
A. cladistic approach; phenetic approach B. phenetic approach; cladistic approach C. shared derived character; ancestral character D. ancestral character; shared derived character
____ is (are) the transport medium for blood
cells and platelets.
a. Pure water b. Plasma c. Lymph fluid d. Plasma and lymph fluid e. None of these
Organs are groups of specialized cells that are similar in structure and perform common functions.
a. true b. false
In transcriptional control in eukaryotic cells
A. enhancers may be involved in the promotion as well as regulation of gene transcription. B. a different combination of DNA-binding proteins (transcriptional factors) may regulate the activity of a particular gene. C. the control may be due to the phosphorylation of transcriptional factors by a kinase. D. All of the choices are correct. E. Only two of the choices are correct.