Answer the following questions true (T) or false (F)
1. The pre-embryonic period starts with a process called gastrulation.
2. The three germ layers are the endoderm, mesoderm, and ectoderm.
3. The fetal period extends from the beginning of week 4 until the end of week 8.
1. FALSE
2. TRUE
3. FALSE
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Two compartments are separated by a membrane that is permeable to water and urea. Compartment I contains 1M NaCl. Compartment II contains 2M urea. Which of the following is a correct statement of their relationship based on the initial conditions?
A) Compartment I is isosmotic to Compartment II. B) Compartment I is hyposmotic to Compartment II. C) Compartment I is hypertonic to Compartment II. D) Both A and C
An axis that passes through the body's center of gravity is a ___________________ axis. ________________________________________
Fill in the blank(s) with the appropriate word(s).
The adrenal cortex produces a steroid hormone called ________ that controls Na+ and K+ homeostasis and another steroid hormone called ________ that controls blood glucose levels.
Fill in the blank(s) with the appropriate word(s).
All cell types can divide a limitless number of times
Indicate whether the statement is true or false