As an overall average, about of the energy at one trophic level is available to the next-highest rank in the food chain.
A. 2%
B. 20%
C. 10%
D. 7%
E. 4%
C. 10%
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The ___ level of the taxonomic hierarchy is more inclusive than a family, but less inclusive than a class
A. order B. phylum C. genus D. species
Neoteny refers to:
A. the case where a sexually mature organism still retains the physical characteristics of the juvenile form. B. the case where a sexually mature organism will lose most of the physical characteristics of the juvenile form. C. the case where a sexually immature organism retains the physical characteristics seen in the adult form. D. the case where a sexually immature organism will lose most of the physical characteristics of the juvenile form.
Starting with shredded spinach leaves, you follow a procedure that separates cellular organelles into different fractions. To identify the fraction that contains the mitochondria, you should test for the presence of
A) aquaporin. B) insulin receptors. C) phospholipids present only in the mitochondrial outer membrane. D) mitochondrial wall polysaccharides. E) electron transport proteins.
The Human Genome Project is an international effort to construct a physical map sequence of the approximately 3 billion base pairs in the haploid human genome
Indicate whether the statement is true or false