Which of the following sex-linked diseases is characterized by a waddling gait, toe walking, frequent falls, and difficulty in rising, and may appear as soon as the child starts to walk?
A) hemophilia
B) fragile X syndrome
C) color-blindness
D) Duchenne muscular dystrophy
E) None of the answer choices is true.
Ans: D) Duchenne muscular dystrophy
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When considering alleles of a gene, DNA is to genotype as ______________ is/are to phenotype
A. RNA B. mutation C. proteins D. lipids E. nucleotides
The enzymes responsible for hydrolyzing glucose into glyceraldehyde-3-phosphate (G3P) are found in which part of
the cell?
a. cytosol b. mitochondria c. rough ER d. nucleus e. cell membrane
Citrus fruit has always been distributed from areas where the fruit is grown to other parts of the country, often by train. In the early 1900s train cars were heated with coal, and it was believed that this heat helped ripen the fruit. Imagine the
surprise of growers and suppliers when fruit that arrived in new boxcars heated by steam arrived unripe. Why did the fruit no longer ripen? A) The length of time needed to ripen the fruit was met by slow-moving older trains; newer steam-powered locomotives arrived before the fruit ripened. B) Ethylene, a by-product of coal burning, ripened the fruit in the cars with the coal stove but was absent from the steam-powered trains. C) The light from the coal-burning stoves caused the fruits to experience short nights, so without this light, they no longer ripened. D) The steam prevented the buildup of abscisic acid, which is needed to ripen fruit.
When cells are in a hypotonic solution, they ____ water
Fill in the blank(s) with the appropriate word(s).