The liver is part of the urinary system
Indicate whether the statement is true or false.
FALSE
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Muscle contractions of the uterine walls and ________ in the semen aid sperm cell
movement through the uterus and uterine tubes. A) prostaglandins B) estrogen C) progestins D) epinephrine
Imagine you are trying to create a living, artificial cell in a lab. Considering their role in human cells, explain how you would try to use each of the four types of biological molecules in your artificial cell. For example, explain how you would use one type of molecule to establish a boundary between the water in your test tube and the inside of your artificial cell.
What will be an ideal response?
How long are sheep in estrus?
a. 10 hours c. 1-2 days b. 30 hours d. 1 week
How long is the period of gestation (pregnancy) in humans from conception?
a. about 33 weeks b. about 34 weeks c. about 36 weeks d. about 38 weeks e. about 40 weeks