During which period of prenatal development is it especially critical not to consume alcohol and why?
What will be an ideal response?
The first trimester is when all the basic organ systems, including the brain and nervous system, are laid down. If a woman consumes alcohol during this period, mild to severe damage to the fetus can result, leading to fetal alcohol syndrome. Any damage done during this period is permanent.
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Answer the following statements true (T) or false (F)
1. Glycolysis involves 10 enzyme-catalyzed steps, that can be grouped into three phases: energy investment phase, cleavage phase, and the energy liberation phase. 2. The electron transport chain consists of a series of redox reactions in which electrons are transferred to oxygen as the final electron acceptor. 3. Oxygen is an excellent final electron acceptor because of its low electronegativity. 4. In prokaryotic cells, the electron transport system occurs in the mitochondria.
Which types of fossils are we most likely to find?
a. fossils of animals that were victims of predators b. fossils of flowers that produce a single seed c. jellyfish fossils d. fossilized mushrooms spores e. fossils of animals that lived on steep slopes
In a cyanobacterium, the reactions that produce NADPH occur in
A) the light reactions alone. B) the Calvin cycle alone. C) both the light reactions and the Calvin cycle. D) neither the light reactions nor the Calvin cycle. E) the chloroplast, but is not part of photosynthesis.
The Salalizard is a fictional vertebrate that lives in the forest and appears to be half salamander and half lizard. You are not allowed to collect any wild animals, so you decide to take a video of it to show your colleagues. What behavior best
distinguishes the Salalizard as either a salamander (amphibian) or a lizard (reptile)? A) what the animal eats B) if it lives in trees C) where it reproduces D) whether it is active at night