________ is the primary germ layer that forms the nervous system and the outer layer of skin and its derivatives, such as hair, nails, oil glands, sweat glands, and mammary glands
Fill in the blank(s) with correct word
Ectoderm
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The MOST common route of transmission of Salmonella typhi worldwide is through
A) contaminated food. B) contaminated water. C) direct contact. D) insect vectors.
Which phylum features segmented bodies and jointed appendages?
a. Arthropoda b. Nematoda c. Platyhelminthes d. Annelida
Which factor in organelle replication immediately precedes "organelle division"?
What will be an ideal response?
The energy yield from the breakdown of a single molecule of glucose does not depend upon
A) whether the NADH produced in glycolysis passes its electrons across the mitochondrial membrane to NAD+ or FAD. B) the supply of oxygen. C) the supply of carbon dioxide. D) whether some of the energy of the H+ gradient is used for work other than ATP production.