Select the correct statement.
a. insulin is released by ? cells & increases blood sugar
b. insulin is released by ? cells & lowers blood sugar
c. insulin is released by ? cells & increases blood sugar
d. insulin is released by ? cells & lowers blood sugar
Answer: d. insulin is released by ? cells & lowers blood sugar
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Sleep apnea is more common in people who are overweight. Excess fat in the neck compresses the _, cutting off airflow.
A. larynx B. thorax C. bronchi D. lungs E. alveoli
Tightly curled hair is caused by a dominant autosomal gene in humans. If a heterozygous curly-haired person marries a person with straight hair, what phenotypes (and in what proportions) are expected in the offspring?
What will be an ideal response?
In the food chain grass ? antelope ? human ? lion, the antelope is ________
A) both an herbivore and a secondary consumer B) both a producer and a primary consumer C) both an herbivore and a primary consumer D) a secondary consumer only
Which of the following statements regarding plasmodesmata is false?
A) Plasmodesmata penetrate plant cell walls. B) Plasmodesmata carry chemical messages between plant cells. C) Plasmodesmata carry nutrients between plant cells. D) Plasmodesmata are found in plants and animals.