Cell theory or cell doctrine is based on some basic principles. Choose the description that best addresses these principles.
A. All living things are composed of one or more cells.
B. All life is composed of two or more cells, the smallest unit of life are cells, and cell division from pre-existing cells is the only way cell continue to exist.
C. New cells come only from pre-existing cells by cell division.
D. Cells are the smallest unit of living organisms, and new cells form from pre-existing cells by cell division.
E. All living organisms are composed of one or more cells, cells are the smallest units of life, and new cells come only from pre-existing cells by cell division.
E. All living organisms are composed of one or more cells, cells are the smallest units of life, and new cells come only from pre-existing cells by cell division.
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The ovary is most often located in the _____
A) stamen B) carpel C) petals D) sepals E) receptacle
FOXP2 functions by
A. acting as a neurotransmitter between neurons and muscles in the jaw. B. regulating cell division. C. regulating the transcription of other genes. D. regulating mRNA splicing. E. acting as a neurotransmitter between neurons in the ear and brain.
Which of the following statements about simple spinal reflexes is true?
a) A spinal reflex can occur without input from the brain b) A spinal reflex can occur very rapidly because input from the brain is not required c) Only one efferent pathway can be activated by a spinal reflex d) All the above are true e) Only a and b are true
Codons are found in
A) rRNA. B) mRNA. C) tRNA. D) all of the above