Concept explainers
A kind of evidence that is used to date the timing of the first eukaryotic cell is fossil record. the direct evidence of the evolutionary history can be obtained by the fossil record. The fossil are remains of organisms that preserved in the sedimentary rocks. Since eukaryotes possess well defined morphological features (nuclear membranes and organelles), they can be fossilized easily compared to bacteria and archaea.
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Explanation of Solution
Phylogenies based on structural or molecular comparisons of living organisms create hypotheses about the period or timing of evolutionary transformations through the history of life on earth, for example, humans. Based on comparisons between the DNA sequences of humans and chimpanzees, it was revealed that chimpanzees are the native relatives of humans. Therefore, this hypothesis is strongly supported by observations that humans and chimpanzees share several characteristic features noticeable at a glance.
Fossils show the history of life and also the past and present processes of evolution on earth. For instance, the capability to walk upright evolved earlier humans evolved a larger-than-average brain. Lucy, the famous specimen of Australopithecus afarensis, dating on about 3.2 million years ago. It was observed that it was fully bipedal, however, it had a brain relatively similar to chimpanzee’s brain. Hence, Lucy (a mix of ancestral characters) provides strong support for a phylogenetic tree that reveals that both chimpanzees and humans are sister taxa.
Therefore, from the above-given example, the criticism of evolution (theory of evolution is impossible to falsify) theory is made false.
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Chapter 22 Solutions
BIOLOGY: HOW LIFE WORKS (LL+ACHIEVE)
- Price of visit Number of visits $700 0 $600 [1 $500 2 $400 3 $300 4 00000 The Table blow gives the demand curve for doctor visits for Elena. If the price of a doctor's visit is $600, and Elena does not have health insurance, she will visit the doctor times. If Elena obtains 50% coinsurance (the company pays 50% of the medical bill, Elena pays 50%), then Elena will visit the doctor times. 1; 2 0; 3 0; 2 1;4 2; 1arrow_forwardP 200 150- 100 50 w/instrance/ w/insurance 2 100 Demand Assume that the white curve (labeled "Demand") represents an individual's true demand for this particular health care service. The coinsurance associated with insurance option 1 (in blue) is likely _. 0000 100% 25% 50% 0%arrow_forwardUse the figure below. Bob and Nancy have the same income and total utility.. willingness to pay for an insurance premium will be lower than because they are. risk- averse. Total utility Current utility Bob's utility Nancy's utility 0000 Bob; Nancy; less Nancy; Bob; less Nancy; Bob; more Bob; Nancy; more Current Income incomearrow_forward
- Consider the figure below. Suppose the true price of a health care service is P1. Suppose further that the individual has obtained insurance that has a fixed copayment for this particular service. The copayment is represented by price P2. represents the quantity of the service the individual would consume without insurance. quantity of the service the individual would consume with the insurance. Health Care Service represents the P. P₂ a Q1;Q2 Q2; Q3 Q1; Q3 Q3; Q1 Q2; Q1 फ f Q ८ g d h Q3\D 7Q 00000arrow_forwardThe table shows the utility Jordan receives at various income levels, but they do not know what their income will be next year. There is a 15% chance their income will be $25,000, a 20% chance their income will be $35,000, and a 65% chance their income will be $45,000. We know that Jordan is Income $25,000 Utility 2,800 30,000 3,200 35,000 3,500 40,000 3,700 45,000 3,800 ☐ none of the above 0 000 risk taker (lover) because their marginal utility of income is increasing risk neutral because their marginal utility of income is constant risk averse because their marginal utility of income is decreasing risk neutral because their marginal utility of income is decreasingarrow_forwardOOOO a d+e d a+b+c Consider the figure below. Suppose the true price of a health care service is P1. Suppose further that the individual has obtained insurance that has a fixed copayment for this particular service. The copayment is represented by price P2. The social loss from moral hazard if the individual has copayment P2 is represented graphically by the area(s): Health Care Service P. a No 4 ८ e g Q2 Q3 Darrow_forward
- OOO O The table shows the utility Jordan receives at various income levels, but they do not know what their income will be next year. There is a 15% chance their income will be $25,000, a 20% chance their income will be $35,000, and a 65% chance their income will be $45,000. We know that Jordan's expected income is. Their utility from their expected income is_ Income $25,000 Utility 2,800 30,000 3,200 35,000 3,500 40,000 3,700 45,000 3,800 $45,000; 3,800 $40,000; 3,700 $25,000; 2,800 $35,000; 3,500 $30,000; 3,200arrow_forwardQuestion 1 Classify the Bird Mark 7; how is it: Powered Triggered Cycled Classify brid mark 7 Powered: By gas (oxygen) Triggered: Negative Pressure, caused by the patient’s inspiratory effort Cycled: The machine stops delivering gas and allows for exhalationarrow_forwardHypothetical "pedigree" for Sickle Cellarrow_forward
- would this be considered a novel protein and if not how can I fix it so it is and can you draw the corrections pleasearrow_forwardIn as much detail as possible, hand draw a schematic diagram of the hypothalamic-pituitary- gonad (HPG) axis in the human male. Be sure to include all the relevant structures and hormones. You must define all abbreviations the first time you use them. Please include (and explain) the feedback loops.arrow_forwardA negligence action was brought by a mother against a hospital on behalf of her minor daughter. It alleged that when the mother was 13 years of age, the hospital negligently transfused her with Rh-positive blood. The mother's Rh-negative blood was incompatible with and sensitized by the Rh-positive blood. The mother discovered her condition 8 years later during a routine blood screening ordered by her healthcare provider in the course of prenatal care. The resulting sensitization of the mother's blood allegedly caused damage to the fetus, resulting in physical defects and premature birth. Did a patient relationship with the transfusing hospital exist?arrow_forward
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