Q: Why would prokaryotes be chemotrophs instead of phototrophs in a deep-sea hydrothermal vent? Choices: - too cold - too much light - too much heat - lack of light A:
lack of light

Q: What molecules are usually insoluble in water? Choices: - polar - acids - ions - non-polar A:
non-polar

Q: Q: What helps amplify the effects of extracellular signals? Choices: - electrical cascades - spontaneous cascades - mutation cascades - enzymatic cascades A:
A: enzymatic cascades

Question: Q: What holds homologs together as the spindle forms for the first meiotic division? Choices: - magnetism - pollenation - spirogyra - chiasmata A:
Answer: chiasmata

*Question*
Q: What are used to make maps of the moon and other planets? Choices: - radio telescopes - topographical charts - rendering satellites - imaging satellites A:
**Answer**
imaging satellites

(Q).
Q: What makes the earth habitable for humans? Choices: - carbonate of water - aridity of water - availability of water - abundance of water A:
(A).
abundance of water