What is a karyotype?
A. A complete sequence of our DNA
B. A picture of all the chromosomes in one person's cell
C. A list of all the genes on our chromosomes
D. A list of all the mutations in our chromosomes
Answer: B
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Which of the following traits appeared at point 3 on the phylogeny above?
A. gap junctions B. cell signaling C. adhesion D. bulk transport E. differentiation of distinct cell types
Which statement regarding fungal reproduction is true?
A. Fungi do not produce spores. B. Fungi can only reproduce sexually. C. Many fungi can reproduce either sexually or asexually. D. All fungi can only reproduce asexually.
Biotic pollution has been particularly harmful to native species:a
in deserts. b. in tundra. c. on islands. d. in tropical rain forests. e. in grasslands
Viruses, bacteria, and old organelles that a cell wants to get rid of are broken down in ________.
a) ribosomes b) mitochondria c) rough ER d) lysosomes