Spore germination followed by cell divisions results in the production of
a. a sporophyte.
b. an antheridium.
c. a zygote.
d. a gametophyte.
a
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A solution of starch at room temperature does not readily decompose to form a solution of simple sugars because _____
A) the starch solution has less free energy than the sugar solution B) the hydrolysis of starch to sugar is endergonic C) the activation energy barrier for this reaction cannot easily be surmounted at room temperature D) starch cannot be hydrolyzed in the presence of so much water E) starch hydrolysis is nonspontaneous
Humans with the condition of familial Down syndrome exhibit which type of chromosomal aberration?
A) chromosome 21 duplication B) chromosome 21 inversion C) chromosome 14/21 Robertsonian translocation D) chromosome 21 deletion E) trisomy of chromosome 21
You find a moldy orange in your produce bin in your kitchen cupboard. What characteristics of this
environment (consider both the orange and your kitchen) contributed to the growth of this mold? Why could a plant not have grown in this cupboard? What will be an ideal response?
Which of the following DNA strands can form a DNA duplex by pairing with itself at each position?
(a) 5?-AAGCCGAA-3? (b) 5?-AAGCCGTT-3? (c) 5?-AAGCGCAA-3? (d) 5?-AAGCGCTT-3?