All genetic mutations are harmful to an organism.
Answer the following statement true (T) or false (F)
False
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All sponges _____
A) have three germ layers B) are free swimming as adults C) reproduce only asexually D) are parasitic E) are sessile benthic
Which of the following is incorrect about blood cells?
A. They include glial cells. B. They include leukocytes that are either granulocytes or agranulocytes. C. They develop from undifferentiated stem cells. D. After birth, they are produced in red bone marrow sites. E. They include erythrocytes that, when mature, lose their nuclei.
In the case of taste and smell, through which structure must sensory information pass before arriving at
the cerebral cortex? a. hypothalamus b. hippocampus c. amygdala d. thalamus e. pineal gland
Which of the following is a tenet of the Cell Theory?
1) All organisms are composed of one or more cells. 2) The cell is the structural unit of life. 3) Cells can arise only by division from a preexisting cell. 4) Cells divide only by fission. A) 1 B) 2 C) 3 D) 4 E) 1, 2 and 3