Which lists the stem cells from the least to the highest degree of flexibility?
A) embryonic stem cells < adult stem cells < zygote B) adult stem cells < zygote < embryonic stem cells
C) embryonic stem cells < zygote < adult stem cells D) adult stem cells < embryonic stem cells < zygote
Answer: D
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Heterotrophic bacteria will run out of organic growth substrates in batch cultures but chemostats can provide constant nutrient source for them to grow
Chemostats for photoautotrophic bacteria are not necessary to maintain them at a constant growth phase because a light can artificially be turned on constantly. Indicate whether the statement is true or false.
What may be a new source that could replace embryonic stem cells for therapeutic purposes?
What will be an ideal response?
Protists cause all EXCEPT which of the
following diseases? a. dysentery b. neurotoxic shellfish poisoning c. malaria d. AIDS e. trichomonal infections of the reproductive tract
The ________ is the distance between the specimen and the objective lens when the specimen is in focus.
Fill in the blank(s) with the appropriate word(s).