Which of the following organelles modifies and packages for secretion the materials produced by the ribosomes?
A. The chloroplast
B. The golgi apparatus
C. the nucleus
D. the nucleolus
E. The mitochondrion
Ans: B. The golgi apparatus
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Blood pressure forces water and small solutes out of blood and into nephrons during _____
a. glomerular filtration b. tubular reabsorption c. tubular secretion d. both glomerular filtration and tubular secretion
Hereditary nonpolyposis colon cancer (HNPCC) requires only one mutational step to initiate the formation of a cancer
cell. a. True b. False
The pineal gland secretes ________, also known as the "hormone of darkness."
Fill in the blank(s) with correct word
Since all living things contain DNA, how can there be so many kinds of living organisms and not just one?
A) all species have the same DNA, but each uses only those sections appropriate for the species B) the order of the bases is unique, not only for each species but for almost every individual as well C) all living things have the same DNA but make variable RNAs when producing the proteins that make each species unique D) different species read or decode the nucleotide sequence in different ways E) this remains one of the great unanswered questions in biology