The hepatic portal system is a special blood circuit between the __________ and __________
a. liver; spleen
b. kidney; liver
c. liver; intestine
d. kidney; heart
e. spleen; heart
C
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Why did the average body weight of sociable weavers move in a stabilizing direction? a. Predators killed birds of medium body weight
b. Meager food supply selects against all birds equally. c. Predators randomly killed the birds. d. Meager food supply selects against birds of high body weight. e. Predators killed birds of high body weight.
This part of the brain plays an important role in
reward-based learning and is part of the brain stem. This part of the brain is the
a. pons. b. medulla oblongata. c. midbrain. d. cerebellum. e. cerebrum.
When considered as a root cause for cancer, which of the following is linked to at least 17 types of human cancer?
A) eating a high-fat diet B) not exercising regularly C) eating a low-fat diet D) smoking
The classic "beads-on-a-string" structure is the most decondensed chromatin structure possible and is produced experimentally. Which chromatin components are not retained when this structure is generated?
(a) linker histones (b) linker DNA (c) nucleosome core particles (d) core histones