Which of the following observations did Darwin apply to organisms in nature?
a. Malthus's observation that England's population was growing much faster than the country's agricultural capacity
b. Malthus's observation that simple organisms evolved into more complex ones, moving up the ladder of life
c. Lamarck's observation that simple organisms evolved into more complex ones, moving up the ladder of life
d. Lamarck's observation that England's population was growing much faster than the country's agricultural capacity
Ans: a. Malthus's observation that England's population was growing much faster than the country's agricultural capacity
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How does cellular respiration differ in prokaryotes and eukaryotes?
a. Eukaryotes use substrate-level phosphorylation; prokaryotes use oxidative phosphorylation. b. Eukaryotes use mitochondria; prokaryotes use their plasma membrane. c. Eukaryotes use NAD+/NADH; prokaryotes use FAD+/FADH2. d. Eukaryotes do not all use oxygen; prokaryotes only use oxygen. e. Eukaryotes use only glucose; prokaryotes use only galactose.
New mothers may benefit from the aid of lactation consultants when learning to breastfeed. These consultants give advice on technique, and help the mother to feel relaxed and confident. What hormone is associated with calm, warm emotions and is also critical for the milk let-down reflex?
A. prolactin B. estradiol C. oxytocin D. mammotropin
Using microbes to break down or remove toxic wastes in water and soil is called ________.
A. bioremediation B. decomposition C. mineralization D. recycling E. synergism
Identify the distinguishing characteristics of phylum Cnidaria. Also identify the classes within this
phylum and their identifying characteristics. Include at least one representative for each class that you identify. What will be an ideal response?