Extracellular matrix is composed of _____
ground substance and protein fibers
formed elements
adipose
epithelium
A. ground substance and protein fibers
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Some multifactorial traits are determined by many interacting genes, each of which may have several alleles. If such a trait is measured in a population, what phenotypic pattern is expected?
A) All individuals will have the same phenotype. B) Two types of individuals will exist, and most will have the dominant phenotype. C) Different individuals will each have one of a few discrete phenotypes. D) The population will have continuous variation in phenotypic expression.
Mitochondria arose from an endosymbiotic relationship between a eukaryotic cell and an aerobic bacteria. Which statement supports this theory?
a. Fossilized mitochondria are older than the oldest fossilized eukaryotes. b. Mitochondria can produce ATP outside of a eukaryotic cell. c. A mitochondrion has its own DNA in the form of a single circular chromosome, like bacteria. d. A mitochondrion has a only one outer membrane. e. A mitochondrion can survive indefinitely when removed from a eukaryotic cell.
Mitotic CDK kinases are activated by an increase in mitotic cyclins.
a. true b. false
What is the total number of different possible combinations of bases in a codon?
A) 20 B) 3 C) 64 D) 4