One of the most common causes of severe food shortages in developing and least developed countries is
A) drought. B) extremely cold weather.
C) not enough seed to plant crops. D) hurricanes.
A
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Which of these substances is not part of the immune system?
a. B-cells b. Cytokines c. Neutrophils d. Antibodies e. Lipoproteins
A developing offspring's cells have separated into a stack of 3 layers (mesoderm, endoderm, and ectoderm) when the zygote stage ends.
Answer the following statement true (T) or false (F)
The primary structure of a protein is critical to its function because it:
A) determines the protein's most basic chemical and physical characteristics. B) includes a prosthetic group within it that is necessary for the protein to function. C) causes polypeptides to fold into unique patterns that determine the protein's complex structure. D) determines the genetic code of the strands of DNA.
What reading level is appropriate for educational material for the general population?
a. 4th grade b. 6th grade c. 8th grade d. 10th grade