You discovered a unicellular organism that lacks a nucleus and peptidoglycan. You suspect the organism is in the group
A) Animalia.
B) Archaea.
C) Bacteria.
D) Fungi.
E) Plantae.
B
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The fossil Lucy (Australopithecus afarensis) is significant because, at _____ years old, hers is the first species to _____
A. 20 million; have been fully bipedal B. 1.3 million; have hominin brow ridges C. 3.2 million years; be fully bipedal D. 1.3 million; migrate out of Africa E. 600,000; have homin brow ridges
Imagine that you are on a nature walk. Your guide points out a lichen growing on a tree trunk, and comments that lichens are actually a type of fungi. You know that this description is not correct. Why?
A. Lichens are actually vascular plants that produce hyphae instead of roots. B. Lichens are actually composed of both fungi and green algae (or cyanobacteria). C. Lichens are actually composed of both fungi and bryophytes. D. Lichens are actually bryophytes that produce hyphae instead of roots.
The most fundamental and important molecule that distinguishes living systems from nonliving matter is ____
a. protein b. DNA c. fructose d. water e. glucose
If a diploid cell from an organism has 46 chromosomes, how many chromosomes are likely to be found in a gamete that is the result of nondisjunction?
A) 21 or 22 B) 24 or 25 C) 23 or 22 D) 46 or 92 E) 22 or 24