Life on Earth is dependent on a continued input of energy from the sun.
Answer the following statement true (T) or false (F)
True
Because energy dissipates and is lost, life on Earth requires a continued input of energy from the sun.
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Bacteria that contain complex internal membrane systems are more likely to divide by budding than by binary fission
Indicate whether the statement is true or false.
The slender stalk that connects the flattened leaf blade to the stem in most dicots is the
A. meristem. B. petiole. C. stele. D. receptacle. E. vein.
Individuals with Turner syndrome (monosomy X) have only one sex chromosome–a single X chromosome. Such individuals are produced when nondisjunction results in a gamete with no sex chromosome,
which subsequently fuses with a normal gamete. What would be the sex chromosome complement of an individual produced by fusion of a normal gamete with the gamete that ended up with the extra chromosome missing from the Turner syndrome patient? A) XXX B) XXY C) XYY D) XY E) Either A or B would be a possible chromosome complement.
Suppose that diploid cells of the seminiferous tubules encounter errors during the cell cycle and mitosis. This results in the primary spermatocytes having a 4n number of chromosomes. Assuming that meiosis proceeds normally, which of the following would be true?
A) Sperm cells would have an n number of chromosomes. B) Sperm cells would have a 2n number of chromosomes. C) Secondary spermatocytes would have a 4n number of chromosomes. D) Secondary spermatocytes would have an n number of chromosomes.