Diatoms are single celled marine algae with walls composed of (chiton/cellulose/carbonate/silica)
What will be an ideal response?
silica
Bloom's Taxonomy: Knowledge
Section: Algae
Learning Outcome: 12.24
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You have two beakers. One contains pure water, the other contains pure methanol (wood alcohol). The covalent bonds of methanol molecules are nonpolar, so there are no hydrogen bonds among methanol molecules
You pour crystals of table salt (NaCl) into each beaker. Predict what will happen. A) Equal amounts of NaCl crystals will dissolve in both water and methanol. B) NaCl crystals will not dissolve in either water or methanol. C) NaCl crystals will dissolve readily in water but will not dissolve in methanol. D) NaCl crystals will dissolve readily in methanol but will not dissolve in water. E) When the first crystals of NaCl are added to water or to methanol, they will not dissolve; but as more crystals are added, the crystals will begin to dissolve faster and faster.
The anther represents the _____ portion of the plant, while the ovules represent the ____ portion of the plant
A. Female ; male B. Male ; female C. Female ; female D. Male ; male
Certain plants have been genetically modified to secrete citrate, which helps
A. make the phosphate in soils more soluble. B. plants make necessary micronutrients. C. reveal mineral deficiencies in a plant. D. make hydroponic growth possible. E. plants add metals to the soil in which they are growing.
Two neighboring Caribbean islands harbor iguana populations. One island (island
A) has a total iguana population of 800, while the other (island B) has a population less than half that size, numbering 250. On island A, the frequency of an allele p is estimated at 0.75, while this same allele is present at a frequency of 0.90 on island B. During a hurricane tracking across the islands, a group of about 100 iguanas get rafted from island A to island B. What effect does this have on the frequency of allele p on island B?