The first part of the renal tubule is called the _____ and is specialized for _____
A. proximal convoluted tubule; reabsorption of electrolytes and other nutrients.
B. loop of Henle; creation of a concentration gradient in the interstitial fluid
C. distal convoluted tubule; secretion of additional wastes into the urine
D. distal convoluted tubule; reabsorption of water
E. collecting duct; reabsorption of water
A
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The energy of the sun is converted into chemical energy during ________.
A. denitrification B. ammonification C. nitrification D. nitrogen fixation E. photosynthesis
Capping proteins such as CapZ
A) cause microtubules to lengthen. B) destabilize microtubules. C) stabilize microtubules. D) cause microtubules branching. E) connect microtubules to microfilaments.
In chickens, females have two different sex chromosomes (Z and W), while the males have two Z chromosomes. A Z-linked gene controls the pattern of the feathers, with the dominant B allele causing the barred pattern and the b allele causing nonbarred feathers. Which of the following crosses would produce all daughters of one type (barred or nonbarred) and all sons of the other type?
A) barred females × nonbarred males B) nonbarred females × barred males C) nonbarred females × nonbarred males D) barred females × barred males E) More than one of the choices is correct.
Rape (from which canola oil is produced), sunflowers, and soybeans have been genetically modified to
enhance production of ___________ fatty acids. Fill in the blank(s) with the appropriate word(s).