The "9 + 2" pattern of the axoneme is nine ________ of microtubules and two additional microtubules in the center called the ________.
A) outer doublets; central pair
B) basal bodies; inner two
C) central tubules; double pair
D) circular structures; middle two
E) triplet groups; basal bodies
A) outer doublets; central pair
You might also like to view...
A graduate student wants to clone a particular gene into a plasmid. The sequence includes AluI and BamHI sites on both sides of the desired fragment
AluI cuts symmetrically directly between the G and C nucleotides in a palindromic 5' AGCT 3' sequence. BamHI cuts asymmetrically directly between the G and G nucleotides in a palindromic5' GGATCC 3' sequence. Which of the two restriction endonucleases should the graduate student choose, and why? A. BamHI to cut both sides-since it cuts asymmetrically, it'll leave the sticky, cohesive single-strand DNA ends that will make it easier to ligate into a BamHI-cut plasmid DNA sequence. B. AluI to cut both sides-it's always easier to ligate together blunt ends of DNA. She should also use AluI on the plasmid she wants to put the fragment into. C. BamHI on the fragment, and AluI on the plasmid-this will give her the matching sequences to anneal/ligate together on the fragment/plasmid combination. D. BamHI on one side of the fragment, and AluI on the other side-this would keep the fragment from sticking right back to where it was cut out from in the original DNA.
Which theory of water transport states that
hydrogen bonding allows water molecules to maintain a continuous fluid column as water is pulled from roots to leaves?
a. pressure flow b. evaporation c. cohesion-tension d. abscission e. fusion
A helix is one possible ____ structure of ____
a. primary; proteins b. primary; carbohydrates c. primary; lipids d. secondary; proteins e. tertiary; proteins
Darwin inferred that those organisms with traits best suited to the environment tend to leave more --- than other members of a population
Fill in the blank(s) with the appropriate word(s).