What is the correct sequence of phases in mitosis?
a. anaphase ? telophase ? interphase ? prophase ? metaphase
b. interphase ? prophase ? metaphase ? anaphase ? telophase
c. metaphase ? anaphase ? telophase ? interphase ? prophase
d. prophase ? metaphase ? anaphase ? telophase ? interphase
Answer: b. interphase ? prophase ? metaphase ? anaphase ? telophase
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The immune system ____
a. works by attacking anything recognized as foreign b. plays no role in fighting cancer c. often accelerates development of malignant cancers d. works by turning off specific genes in an individual's DNA e. is highly resistant to genetic modification
Rubisco has 16 subunits joined together to make a functional unit. Eight of the subunits are large, the
other 8 are small. What does this tell you about this protein's structure?
a. It is an example of a protein having quaternary structure. b. The protein has tertiary structure and domains but no quaternary structure. c. The primary sequence of all 16 subunits is identical, which is a unique property of enzymes participating in photosynthesis. d. The subunits each have 8 alpha helices in order to bind to CO2 and RuBP. e. It's an enzyme that is extremely resistant to denaturation.
The movement of some molecules and ions out of excretory system tubules and back into body fluids
is
a. reabsorption. b. release. c. filtration. d. secretion. e. diffusion.
What is the intensity of that color?
a. 25 b. 50 c. 75 d. 100