Cells become progressively organized into recognizable structures through a process known as:
a. morphogenesis.
b. determination.
c. cell differentiation.
d. nonspecific differentiation.
e. growth.
A
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Organisms from all classifications of life are composed of cells
A. true B. false
An mRNA molecule has a cap attached to its 5' end and a poly-A tail attached to its 3' end
a. True b. False Indicate whether the statement is true or false
Which of the following is true regarding quadrats?
a. A full population count is usually impractical. b. Quadrats are plots of land of the same size and shape that can be used to randomly count a single non-migrating species. c. Once several quadrats are counted, an estimate of number of a particular organism can be extrapolated for a given land mass. d. Sampling error is common if the size of the quadrats is not large. e. All of these are correct.
On a warm day in April, Tina jumped into the swimming pool. To her surprise the water was really cold. Which property of water did she discover?
A. The temperature of liquid water rises and falls slowly. B. Frozen water is less dense than liquid water. C. Water molecules are cohesive. D. Water is a polar molecule. E. Water possesses hydrogen bonds.