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.

Biology & Microbiology

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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.

Biology & Microbiology

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.

Biology & Microbiology

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.

Biology & Microbiology

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.

Biology & Microbiology