CAM and C4 plants likely grow in what type of environment?
A. Cool
B. Hot and arid
C. High altitude
D. In water
B. Hot and arid
Both of these types of plants have adaptations that allow them to minimize photorespiration. As a result, they likely grow in hot, arid environments where stomata close to minimize water loss.
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Answer the following statements true (T) or false (F)
1. Bacterial cells only contain one copy of its circular chromosome. 2. Bacteria can exchange DNA between strains of the same species and between different species. 3. Viroids have a genome but do not translate any of it to protein. 4. Horizontal gene transfer occurs when one species of bacteria takes up the DNA of another species that released the DNA when it died. 5. Bacterial conjugation is also called bacterial sex because there is an equal exchange of genetic information between two cells.
A(n) essential amino acid is one that must be provided in the diet. Indicate whether the statement is true or false
In the sweet pea crossing experiment by Bateson and Punnet, the F2 generation had many more offspring with the phenotypes of purple flowers with long pollen (PL) and red flowers with round pollen (pl) than expected from independent assortment. This is because
A. in sweet peas, the alleles for flower color and pollen shape are on the same chromosome. B. in these sweet peas, there are always more PL gametes than there are pl gametes. C. In sweet peas, the alleles for flower color and pollen shape are next to each other on the same chromosome. D. In sweet peas, the allele for flower color is in the nuclear genome and the allele for pollen shape is on the chloroplast genome. E. All of the answers are correct.
Which statement could be used as evidence to show that two different species of organisms most likely develop from a single, common ancestor?
a. They eat the same types of food b. they have different digestive enzymes c. they lived during the same time period d. they contain similar amino acids