Serial dilutions can be used to estimate the total number of bacterial cells, both living and dead, in a solution.
Answer the following statement true (T) or false (F)
False
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Social attachments are formed between parents and offspring.
Choose the letter of the best match: A. cognition B. waggle dance C. navigation D. filial imprinting E. fixed action pattern
Gene therapy has not yet cured any patients of their genetic disorder. Indicate whether the statement is true or false
Which of the following best describes the structure of how water molecules form and interact?
a. Hydrogen atoms bond with each other to create a stable outer shell of electrons. Then they form a hydrogen bond to an oxygen atom to create the water molecule. b. Oxygen atoms transfer one electron to each of the hydrogen atoms, forming an ionic bond that attracts other water molecules to it. c. The oxygen atom and hydrogen atoms form a covalent bond with one another to create stable outer shells of electrons. d. The electrons are shared unequally resulting in a polar molecule whose slight charges form weak hydrogen bond attractions with other water molecules. e. Hydrogen bonds are formed between the two hydrogen atoms and the oxygen atom. This water molecule then forms a covalent bond with adjacent water molecules. f. The oxygen atom is more electronegative than the two hydrogen atoms. Due to this, it removes the electron from each hydrogen atom. This satisfies the outer shell of oxygen. Then hydrogen bonds form between the two remaining hydrogen atoms to hold them near to the oxygen atom.
Spongiform encephalopathy describes all of the following diseases except:
A) Alzheimer's disease B) Mad Cow disease C) Kuru D) Elk wasting disease E) Creutzfeld - Jakob disease