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What substance is a waste that would normally diffuse across the placenta from the embryo to the mother?
Wiki User
∙ 13y ago
glucose
Wiki User
∙ 11y ago
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What way does blood normally pass across the placenta?
blood does not pass across the placenta
What happens to a baby's blood as it passes through a placenta?
diffuse across the placental membranes into the mothers bloos.
What is the membrane said to be if a substance is able to diffuse across a membrane?
selectively permeable
If a substance is able to diffuse across a membrane then the membrane is said to be what?
selectively permeable
If a substance is unable to diffuse across a membrane we say the membrane is?
osmotically active
What substance can be passed from the mother to the foetus?
Carbon dioxide and other such waste gases diffuse from the foetus and across the placenta into the mother's blood. Urea (excretory product) also diffuses into the mother's blood. (The substances in bold will answer question).
What substance is most likely to passively diffuse across the plasma membrane by dissolving in the membrane?
Lipid-soluble molecules such as O2 and CO2 diffuse freely through the plasma membrane.
How plasma membrane diffuse across plasma membrane?
Ions can't diffuse across membranes, they must used channels to transport across
How do you use diffuse in sentence?
Oxygen molecules diffuse across the membrane.
What characteristics is more likely to make a substance diffuse through the cell membrane?
Size. Actually very few substances are able to diffuse across the menbrane, most must be transported ie facilitated diffusion, active transport, or receptor-mediated endocytosis. Carbon dioxide, oxygen, water, and some lipid substances are able to diffuse across the membrane
What kinds of molecules freely diffuse across a semipermeable membrane?
Water molecules freely diffuse across a semipermeable membrane.
Can oxygen diffuse across a cell membrane?
Yes, how else would our cells obtain oxygen?
