What is the name of the birth defect in which the neural tube fails to close completely?
a. neurulation
b. fossa ovalis
c. organogenesis
d. spina bifida
e. capacitation
D
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The swelling of a food-containing can is frequently due to the production of ________ by spoilage microbes.
A. nitrogen gas B. oxygen gas C. carbon dioxide gas D. All of the choices are correct.
DNA replication occurs
1.between the gap phases of interphase. 2.immediately before prophase of mitosis. 3.during prophase of mitosis. 4.during prophase of meiosis. 5.at any time during cell division.
Which of the following organelles does not receive proteins by posttranslational import of proteins synthesized on cytoplasmic ribosomes?
A) lysosome B) nucleus C) mitochondria D) peroxisomes E) chloroplast
What is NOT a major function of the cytoplasmic membrane?
a. protection from osmotic lysis b. energy conservation and consumption c. protein anchor d. selective permeability barrier