What are the two main functions of the nephron loop?
A) Creates a high salt concentration in the renal medulla and reabsorbs salt and water
B) Creates a high salt concentration in the renal cortex and reabsorbs some salt and water
C) Creates a high glucose concentration in the renal cortex and releases extra salt into the filtrate
D) Creates a low salt concentration in the renal medulla and reabsorbs salt and water
E) Filters cellular wastes from blood in the capillaries and reabsorbs some salt and water
A
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Which of the following is true of gap junctions?
A. They are holes in the cell wall through which the plasma membrane and endoplasmic reticulum of adjacent cells are connected. B. They are channels in the plasma membrane of plant cells made of transmembrane proteins that allow ions and small molecules to pass between adjacent cells. C. They are channels in the plasma membrane of animal cells made of transmembrane proteins that allow ions and small molecules to pass between adjacent cells. D. They provide points of structural support between adjacent plant cells. E. They provide points of structural support between adjacent animal cells.
If the Earth were to reorient such that the North Pole always received direct sunlight (always faced the Sun), how would that change Earth's climate?
A) The equators would not change in climate. B) The South Pole would get colder. C) The equators would get warmer. D) The North Pole would get more wind.
The oviducts are not attached to the ovaries.
Answer the following statement true (T) or false (F)
DNA replication occurs
a. during both mitosis and meiosis. b. only during mitosis. c. only during meiosis. d. during the S phase. e. during G2.