The plant cell can move substances into cells using proton pumps that work against a gradient.
Answer the following statement true (T) or false (F)
True
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The woman in the above photograph has been
afflicted by a. low iodine in the diet. b. hypothyroidism. c. vitamin D deficiency. d. testosterone excess. e. progesterone deficiency.
Whole-cell movements involve the coordinated activity of
a. microtubules. b. microfilaments. c. blastomeres. d. microtubules and microfilaments. e. microtubules and microfilaments and blastomeres.
Which of the following provides some evidence that RNA probably evolved before DNA?
A. DNA polymerase has proofreading function. B. RNA polymerase makes a single-stranded molecule. C. RNA polymerase uses DNA as a template. D. RNA polymerase does not require localized unwinding of the DNA. E. DNA polymerase uses primer, usually made of RNA.
Clostridium botulinum are endospore-forming bacteria normally found in the soil
Indicate whether the statement is true or false.