Which vitamin is essential in early pregnancy to prevent nervous system defects such as spina bifida, which is characterized in the fetus by incomplete closing of the backbone and membranes around the spinal cord mastering biology?

What is " vichyssoise"?

Name 5 things that are controlled by your genes.

What hypothesis were the researchers testing in this study? What hypothesis were the researchers testing in this study? Sugar beet seedlings have a higher rate of fungal infection in heated soils.

A small amount of dna is collected from a crime scene. however, the amount of dna collected is insufficient to perform the necessary experiments to link a suspect to the crime. which method could be utilized to increase the amount of dna

Which happens during the second trimester? O A. The vocal cords develop. O B. The heart starts working. C. Rhythmic breathing starts. D. Blood begins to form.

The rapid depolarization phase of the action potentials of myocardial contractile cells is due primarily to which ion (s) ?

Echinoderm reproduction typically is a. sexual reproduction by budding. b. sexual reproduction with internal fertilization. c. by regeneraton. d. sexual reproduction with external fertilization.

Which is an abiotic factor of the boomslang's environment? A. the sun B. the tree C. the grass D. the people

A double-stranded molecule of DNA has 80 T nucleotides and 110 G nucleotides. What is the TOTAL number of nucleotides in this molecule of DNA?

Why is an angioplasty an incorrect treatment for an aneurysm? A) Aneurysms cannot be treated. B) An angioplasty may rupture the blood vessel wall. C) An angioplasty can have dangerous drug reactions. D) Aneurysms are treated only with pacemakers.