Which statement best describes type 1 diabetes?
A. Near-normal insulin levels are maintained.
B. Beta cells are hyperactive.
C. It is the more common form of diabetes.
D. Insulin-producing cells are attacked by the immune system.
E. It often occurs as a result of obesity.
Answer: D
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In meiosis in females, only one haploid cell develops into an egg. The remaining haploid products of meiosis are ________, which usually degenerate
Fill in the blank with correct word.
The most heat-tolerant organisms presently known come from
A) tropical deciduous forests. B) tropical rain forests. C) deep-sea hydrothermal vents. D) tundras. E) chaparrals.
At an autosomal gene locus in humans, the allele for brown eyes is dominant over the allele for blue eyes. At another gene locus, located on the X chromosome, a recessive allele produces colorblindness while the dominant allele produces normal color vision. A heterozygous brown-eyed woman who is a carrier of colorblindness has a child with a blue-eyed man who is not colorblind. An ultrasound test shows that the child is a girl. What is the probability that she will be colorblind? (Enter the probability as a percent. Enter the number only without the percent sign. For example, enter 100% as 100 and enter 12.5% as 12.5)
What will be an ideal response? Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about X-linked and autosomal inheritance? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Bacterial Strain A divides every 30 minutes. If you require at least 4 billion cells to perform an experiment, how long will you need to incubate a culture tube inoculated with a single cell of Bacteria A to get enough material to perform your experiment?
A. 16 B. 32 C. 4 D. 8 E. 2