Briefly describe at least 4 levels of biological organization in organisms
What will be an ideal response?
Cells, either single or in various levels of organization, make up organisms. Multi-cellular organisms may have groups of the same cell type that serve one particular function which are called tissues. Several tissues operate together to form more complex structures called organs. Groups of organs can combine to form organ systems. Complex organisms can have one or more organ systems.
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The central nervous system is lacking in animals that have _____
A) a complete gut B) bilateral symmetry C) radial symmetry D) a closed circulatory system E) excitable membranes
Which of the following is least likely to be involved in a cell localization regulatory mechanism?
A. steroid hormone receptors B. ubiquitination of proteins C. dephosphorylation of proteins D. sumoylation of proteins
The concept of nuclear equivalence states that:a
all of the somatic cells in an adult organism have the same genes. b. the genes of the individuals of the same species are exactly the same. c. as cells mature, unneeded genes are lost. d. the nuclei of all organisms are the same. e. nuclei of individuals of the same species are the same size.
When a round fruit plant is crossed with a long fruit plant their offspring are oval. What is the best explanation for this scenario?
A. pleiotropic inheritance B. polygenic inheritance C. incomplete dominance D. X-linked inheritance