Which sex chromosome aneuploidy is not usually seen in live births?
A) XO
B) XXY
C) YO
D) XXX
C) YO
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Malaria is
A) the most common cause of death due to infectious disease worldwide. B) prevented or treated with chloroquine. C) controlled by reducing the population of the mosquito vector. D) the most common cause of death due to infectious disease worldwide, although it can be controlled by reducing the population of the mosquito vector and prevented or treated with chloroquine.
We study cellular respiration because it is one of the most important pathways in biology. In fact,
nearly all carbohydrates at some point in their catabolism are directed through cellular respiration. Why is it NOT necessary to have multiple independent pathways to break down different molecules?
a. Using cellular respiration is theoretically the most efficient way to break down sugars and other molecules. b. Oxygen must be used in the breakdown of all molecules in order to yield ATP. c. Greater complexity would lead to an eventual failure of the biological system. d. Most biological cells only catabolize one or two different types of sugars and only need one main pathway. e. The molecules that are degraded are all structurally similar and relatively easily interconverted.
Compared to other genes, the rbcL gene in plants has a mutation rate that is ____ most other plant
genes.
a. slower than b. similar to c. five times faster than d. more random than e. ten times faster than
Which of the following statements concerning metagenomic sequencing is incorrect?
A. Software aligns sequences and assemble large portions of genomes. B. The samples are subject to polymerase chain reaction for amplification. C. Proteins are extracted from an environment, fragmented, and adaptors are added. D. The sequences of the amplified fragments are determined by next-generation methods.