Answer the following statements true (T) or false (F)
1. Myosin is a motor protein that walks along intermediate filaments.
2. The flagellum is composed of a 9 + 2 arrangement of microtubules called the axoneme.
3. Materials move in and out of the nucleus via endocytosis and exocytosis.
4. The Endosymbiosis theory best describes the origins of peroxisomes in eukaryotes.
1. FALSE
2. TRUE
3. FALSE
4. FALSE
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Because their host cells have dsDNA genomes, viruses with RNA genomes cannot rely on host cell enzymes for genome replication or mRNA synthesis.
Answer the following statement true (T) or false (F)
What is the atomic mass number of an atom with 7 electrons, 7 neutrons, and 7 protons?
a. 7 daltons b. 10 daltons c. 14 daltons d. 21 daltons e. 28 daltons
Which of the following is true of typical plant development?
a. Growing tips and zones are present throughout a plant's life, and final plant form is not influenced by the environment. b. Plant bodies have a fixed final size, and final plant form is influenced by the environment. c. Final plant form is not influenced by the environment, and growing tips and zones are present throughout a plant's life. d. Growing tips and zones are present throughout a plant's life, and plant bodies do not have a fixed final size. e. Plant bodies do not have a fixed final size, and final plant form is not influenced by the environment.
In the early twentieth century, most scientists believed that only nucleic acids were complex enough to carry genetic
information. a. True b. Fals