3. A student was conducting an investigation using an unicellular organism called a paramecium. Paramecium maintain homeostasis by using a contractile vacuole to move water across their membranes. When paramecium are placed in distilled water a hypotonic solution, they are under distress
Which of the following most likely explains how the paramecium were able to maintain homeostasis in the distilled water environment that put them under distress?
The paramecium removes the extra water it absorbed.
The paramecium absorbed extra salt to change its concentration
The paramecium absorbed extra water to replace what it lost.
The paramecium shrank so it required less water.

Awoman whose sister tested positive for a specific mutation in the brca1 gene, which increases the risk for breast and ovarian cancer, is found not to have that mutation but does have a mutation of unknown significance near the known mutation site. how should this woman be counseled? select one: a. she should be informed that her risk for breast cancer is greater than the general population but not as great as her sister’s risk. b. she should be informed that because she does not have the mutation, her risk for breast cancer is not greater than that of the general population. c. she should be informed of her gene mutation status and be presented with all the available prophylaxis options and reconstruction options. d. she should be informed that she does not have the specific mutation but that because another mutation is present she should be vigilant about screening

For each of the formulas, classify the formula as either an empirical formula, a molecular formula, or both. nahco3 empirical molecular both

After much research and dna analysi.s it has been determined that species in the same clade are actually more distantly related than originally thought. what is one way that the cladogram may change because of this information?