Which pairs of organ systems work together to acquire energy?
A. circulatory and respiratory
B. nervous and endocrine
C. skeletal and muscular
D. urinary and integumentary
E. reproductive and digestive
A. circulatory and respiratory
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A genetic cross was performed with two pea plants having green, wrinkled seeds. Of the resulting offspring, 75% had green, wrinkled seeds and 25% had green, smooth seeds. With regard to wrinkled versus smooth seeds, the parents must have been ________.
Fill in the blank(s) with the appropriate word(s).
The goal of immunization is to
a. limit the amount of time a person is ill with a disease. b. induce immunity to disease. c. enable infected individuals to recover from specific diseases. d. accomplish all of these. e. accomplish none of these
The source region in the pressure flow explanation of phloem transport is most often the ____
a. root b. flower c. stem d. leaf e. soil
Hemophilia is caused by an X-linked recessive gene. A normal woman whose father had hemophilia marries a normal
man. What are the chances of hemophilia in their children? What will be an ideal response?