Why is only one strand of DNA transcribed into mRNA?
a. Because mRNA is only required in small quantities
b. Because transcribing both DNA strands would produce different amino acid sequences
c. Because the other strand would produce the same amino acid sequence in reverse order
d. Because all genes are located on the same DNA strand, while the other strand acts as protection
e. Because the other strand is transcribed directly into amino acids
b
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In some species of sharks, babies hatch from shells within their mother's body. This is an example of
a. oviparity. b. viviparity. c. ovoviviparity. d. budding. e. fission.
Match the letter of each example from childbirth to the appropriate component of a positive feedback loop.A. pituitary gland secretes oxytocin, which acts on the uterusB. uterine contractions increaseC. fetus is pushed against uterine openingD. receptors detect stretchE. brain receives and compares stretch informationStimulus
What will be an ideal response?
Resistant bacterial strains have evolved as a result of use and over use of _______________
Fill in the blank(s) with the appropriate word(s).
You find colorless areas in cells in a Gram-stained smear. What should you apply next?
A) an acid-fast stain B) a flagella stain C) a capsule stain D) an endospore stain E) a simple stain