The animals most like the ancestral protist colonies that likely gave rise to all animals are
A) nematodes.
B) arthropods.
C) echinoderms.
D) chordates.
E) sponges.
E
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During cellular respiration, acetyl CoA accumulates in which location?
A) cytosol B) mitochondrial outer membrane C) mitochondrial inner membrane D) mitochondrial intermembrane space E) mitochondrial matrix
One hypothesis explaining the first nucleated eukaryotic cell is based upon the fusion of an archaeon and a bacterium that, over time, saw archaeal genes involved in metabolism being lost while bacterial genes involved in information processing were also degraded.
Answer the following statement true (T) or false (F)
The primary function of the leaf structure labeled 5 in Figure 9-1 is:
a. food storage.
b. photosynthesis.
c. water transportation.
d. gas exchange.
e. nutrient absorption.
Why have human growth rates increased the most in developing countries in the past 50 years?
A. Death rates have fallen more slowly than birth rates. B. Death rates have gone up faster than birth rates. C. Death rates have fallen faster than birth rates. D. Death rates have gone up more slowly than birth rates.