Organisms that grow well at 0°C and have optimum growth temperatures of 15°C or lower are called
A. frigiphiles.
B. mesophiles.
C. psychrotrophs.
D. psychrophiles.
Answer: D
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Which of the following binds plant cells into tissues?
A. pectins B. cadherins C. integrins D. cadherins and integrins E. cadherins, integrins, and pectins
Different methodologies can be used to obtain the same information about a DNA sequence
a. True b. False
Where on this phylogenetic tree of primate evolution do you find the evolution of humans and species very closely related to humans?
A. No. 1 B. No. 2 C. No. 3 D. No. 4 E. No. 5
Answer the following questions true (T) or false (F)
1. Ciliates often have two kinds of nuclei that have different functions. 2. In fungi, aseptate hyphae are coenocytic by definition. 3. Algae can have different types of photosynthetic pigments that allow them to photosynthesize at various depths in water.