Which of the following is true concerning the dodo bird?
a. The greatest effect by humans on the dodo bird was because Dutch sailors ate them
b. The dodo bird went extinct in the twentieth century due to industrial pollution.
c. Humans were not involved in their fate.
d. Destruction of nests and habitat by animals that accompanied the sailors caused the greatest effect on dodo bird populations.
d
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Eukaryotic pre-mRNA molecules are modified
A. in the cytoplasm. B. at the ribosome. C. inside the nucleus. D. as they pass through the nuclear membrane. E. at the transcription bubble.
There are two different mating types in the yeast Saccharomyces cerevisiae, and they can switch from one type to another
Indicate whether the statement is true or false.
The spindle apparatus is composed of
a. Golgi bodies. b. microtubules. c. endoplasmic reticulum. d. nucleoprotein. e. chromatids.
Which of the following statements is true?
A) Gymnosperms have seeds that are not enclosed in a protective casing, while angiosperms have flowers that produce seeds with a protective casing. B) Gymnosperms have flowers that produce seeds with a protective casing, while angiosperms have seeds that are not enclosed in a protective casing. C) Gymnosperms lack true roots and leaves, while angiosperms lack lignin cell walls. D) Gymnosperms lack seeds, while angiosperms have flowers that produce seeds with a protective casing.