Bicarbonate ions in the blood can absorb hydrogen ions, keeping pH balanced. Bicarbonate is acting as a ____ in blood
A. acid
B. alkaline
C. buffer
D. base
C
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In eared seals, the hindlimbs can rotate at right angles to the body and can be used for walking on land
Indicate whether the statement is true or false
Both aquatic and terrestrial organisms must have ____ across which gas exchange can take place
a. a respiratory system b. tracheal tubes c. gills and lungs d. stratified squamous epithelial tissue e. a moist surface
The total DNA content of each daughter cell is reduced during meiosis because
a. chromosomes do not replicate during the interphase preceding meiosis I. b. chromosomes do not replicate between meiosis I and II. c. half of the chromosomes from each gamete are lost during fertilization. d. sister chromatids separate during anaphase of meiosis I. e. chromosome arms are lost during crossing over.
What technique is used to amplify a target gene of interest?
What will be an ideal response?