BIOLOGY (OER)
2nd Edition
ISBN: 2810023110482
Author: OpenStax
Publisher: MBS
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Chapter 37, Problem 32CTQ
Oral contraceptive pills work by delivering synthetic progestins to a woman every day. Describe why this is an effective method of birth control.
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Question #3:
In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would
transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming
there was just one gene conferring gametophytic obligate apomixis, and that the two parents are
inbreds, what would be the consequences of such a cross if:
a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non-
apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic
and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female
first (left side) in the parental cross.
b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non-
apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic
and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female
first (left side) in the…
Question #5:
Assume that two genes are identified that confer gametophytic facultative apomixis in soybean. The
genes show independent assortment. Recessive alleles at both loci are required for the facultative
apomixis. Facultative apomixis is triggered when the temperature at pollination is above 20 degrees C.
At temperatures below 20 degrees C, all reproduction is sexual, independent of genotype.
A facultative apomict male, capable of producing viable pollen, was crossed with a sexually
reproducing female. Assuming the parents are completely inbred, what are the predicted phenotypic
ratios (apomict: non-apomict) for the F1, F2, and DH (F1-derived) generations at each of the following
temperatures*:
a) 15°C?
b) 25°C?
*for full credit, show crosses and genotypes where appropriate. Remember to position the
female first (left side) in the cross.
Type your answer here:
a. What percentage of a drug is eliminated after 4 half-lives? Please round to the nearest percent.
b. What will happen to elimination of the drug in the previous question if the system is saturated? explain and show any math involved
Chapter 37 Solutions
BIOLOGY (OER)
Ch. 37 - Figure 37.5 Heat shock proteins (HSP) are so named...Ch. 37 - Figure 37.11 Pancreatic tumors may cause excess...Ch. 37 - Figure 37.14 Hyperthyroidism is a condition in...Ch. 37 - A newly discovered hormone contains four amino...Ch. 37 - Which class of hormones can diffuse through plasma...Ch. 37 - Why are steroids able to diffuse across the plasma...Ch. 37 - A new antagonist molecule has been discovered that...Ch. 37 - What effect will a cAMP inhibitor have on a...Ch. 37 - When insulin binds to its receptor, the complex is...Ch. 37 - Drinking alcoholic beverages causes an increase in...
Ch. 37 - FSH and LH release from the anterior pituitary is...Ch. 37 - What hormone is produced by beta cells of the...Ch. 37 - When blood calcium levels are low, PTH stimulates:...Ch. 37 - How would mutations that completely ablate the...Ch. 37 - A rise in blood glucose levels triggers release of...Ch. 37 - Which mechanism of hormonal stimulation would be...Ch. 37 - A scientist hypothesizes that the pancreas’s...Ch. 37 - Which endocrine glands are associated with the...Ch. 37 - Which of the following hormones is not produced by...Ch. 37 - Recent studies suggest that blue light exposure...Ch. 37 - Although there are many different hormones in the...Ch. 37 - Where is insulin stored, and why would it be...Ch. 37 - Glucagon is the peptide hormone that signals for...Ch. 37 - Name two important functions of hormone receptors.Ch. 37 - How can hormones mediate changes?Ch. 37 - Why is cAMP-mediated signal amplification not...Ch. 37 - Name and describe a function of one hormone...Ch. 37 - Describe one direct action of growth hormone (GH).Ch. 37 - Researchers have recently demonstrated that...Ch. 37 - How is hormone production and release primarily...Ch. 37 - Compare and contrast hormonal and humoral stimuli.Ch. 37 - Oral contraceptive pills work by delivering...Ch. 37 - What does aldosterone regulate, and how is it...Ch. 37 - The adrenal medulla contains two types of...Ch. 37 - How would damage to the posterior pituitary gland...
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- If you wanted to reduce the difference between peak and trough levels that occur with repeated administration of a drug, how would you adjust the dose and dose interval without changing the plateau concentration (plateau is the average of peak and trough levels)? Select your answers for both dose and interval. Hint: It may be helpful to think about this problem using an example such as food. How would you eat if you wanted to maintain very steady hunger/satiety levels without changing your total caloric intake? Options: A. Dose; Increase dose B. Dose; Decrease dose C. Dose; Do not change dose D. Interval; Increase the interval between doses (give the drug less frequently) E. Interval; Decrease the interval between doses (give the drug more frequently) F. Interval; Do not change the intervalarrow_forwardWhat percentage of a drug is eliminated after 4 half-lives? Please round to the nearest percent. Show the matharrow_forwardBriefly explain the 6 domain of interprofessional collaboration: Role clarification, Team functioning, Interprofessional communication, Patient/client/family/community-centered care, Interprofessional conflict resolution, Collaborative leadership. Provide a specific negative events that nursing student would observe in a clinical setting for each domain.arrow_forward
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