Diatoms have both chorophyll a and chlorophyll ________.
Fill in the blank(s) with the appropriate word(s).
Answer: c
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Escherichia coli uses mixed acid fermentation pathways that depend on which of the following enzymes?
A. Ammonia monooxygenase B. Formate dehydrogenase C. Pyruvate formate-lyase D. C-type cytochrome
The first level of compaction of DNA consists of
A) DNA winding around histones to form small nucleosomes. B) tight coiling of DNA with nucleosomes into higher order structures. C) compaction into metaphase chromosomes. D) histone, DNA, and nonhistone covalent bonding.
A fern is an example of what type of plant?
a) seedless vascular b) flowering plant c) nonvascular d) naked seed plant
How is sexual reproduction different from asexual reproduction?
A. Sexual reproduction occurs with only a single parent. B. Asexual reproduction requires testes and ovaries. C. Sexual reproduction requires fertilization of an egg by a sperm. D. Asexual reproduction requires two kinds of cell division.