Which of the following correctly describes the path of a drop of blood leaving the human heart?
A. heart arteries arterioles capillaries
venules veins heart
B. heart veins venules capillaries arterioles
arteries heart
C. heart arterioles arteries capillaries veins
venules heart
D. heart venules veins capillaries arteries
arterioles heart
E. heart arteries veins capillaries arterioles
venules heart
A
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Microbial life has been identified at depths of 3 km despite being anoxic
Indicate whether the statement is true or false.
When an ionic compound such as sodium chloride (NaCl) is placed in water, the component atoms of the NaCl crystal dissociate into individual sodium ions (Na+) and chloride ions (Cl-). In contrast, the atoms of covalently bonded molecules (e.g
, glucose, sucrose, glycerol) do not generally dissociate when placed in aqueous solution. Which of the following solutions would be expected to contain the greatest number of solute particles (molecules or ions)? A) 1 liter of 0.5 M NaCl B) 1 liter of 1.0 M NaCl C) 1 liter of 1.0 M glucose D) 1 liter of 1.0 M NaCl and 1 liter of 1.0 M glucose will contain equal numbers of solute particles.
Which of these was the dominant plant group at the time that dinosaurs were the dominant animals?
a) bryophytes b) charophyceans c) seedless vascular plants d) gymnosperms e) angiosperms
The differences between peripheral and integral membrane proteins are that:
A. Peripheral membrane proteins lack discrete hydrophobic regions B. Peripheral membrane proteins are not located within the lipid membrane C. Peripheral membrane proteins are easily extracted by changes in pH or ionic strength D. Peripheral membrane proteins associate with membranes though electrostatic forces, van der Waals forces, and hydrogen bonds E. All of the above