Of the visible light spectrum, blue wavelengths penetrate the deepest into water
Indicate whether the statement is true or false
TRUE
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What is the relationship between operons and transcription units?
a. They are synonymous terms. b. An operon consists of a transcription unit plus associated regulatory DNA sequences. c. A transcription unit consists of an operon plus associated regulatory DNA sequences. d. An operon is composed of multiple transcription units. e. A transcription unit is composed of multiple operons.
Congenital non-spherocytic haemolyic anaemia (CNSHA) is caused by a mutation of one or more of the enzymes of the glycolytic pathway. The most common is a mutation in the gene for pyruvate kinase resulting in a non-functional enzyme. Patients with CNSHA often show marked ATP deficiencies. Given what you know about this enzyme’s action, why would this be expected?
a. Pyruvate kinase produces ATP when it phosphorylates glucose to glucose-6-phosphate. b. Pyruvate kinase uses excess ATP when it phosphorylates fructose-6-phosphate. c. Pyruvate kinase produces ATP when it generates pyruvate from phosphophoenolpyruvate (PEP). d. Pyruvate kinase uses excess ATP when it catalyzes the dehydration of 2-phosphoglycerate.
The chi-square value is the sum for all progeny classes of (observed-expected)2/expected. Using the chi-square test for goodness of fit, calculate the chi-square value to test the null hypothesis that genes C and D are unlinked. What is the chi-square value?
A dihybrid testcross is made to determine if genes C and D are linked. The results are shown in the table.
A) 0
B) 0.0576
C) 10.8
D) 14.4
E) cannot be determined
Which of the following is part of the vulva?
a. urethra b. vestibule of the vagina c. cervix d. endometrium e. mons pubis