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Q. If intelligent extraterrestrials visited Earth 475 million years ago, and after that again 300 million years ago (at the close of the Carboniferous period), what trends would they have noticed in Earth's terrestrial vegetation over this period?
1. Trend from dominant gametophytes to dominant sporophytes
2. Trend from sporangia borne on modified leaves (sporophylls) to sporangia borne on stalks (seta)
3. Trend from no true leaves, to microphylls, to megaphylls
4. Trend from soil-surface-hugging plants to "overtopping" plants
5. Trend toward increased lignifications of conducting systems
The effects of early feeding experiences on later food preferences were studied in guinea pigs. The animals were grouped five per cage, and each of the three groups was fed only one type of food-A, B, or C-for three weeks.
1. where does translation occur?a. in the nucleusb. cytoplasmc. on the dnad. none of above2. select the correct answer
The phosphate system serves to buffer intracellular fluid of cells at physiological pH because pK2 (7.20) lies near the normal pH range of 6.9-7.4. If the total cellular concentration of phosphate is 19mM and the pH is 6.9, what is the concentrati..
During protein translocation, why would inhibiting enzymes that add carbohydrates to glycosylation branches stop the movement of protein to the next step?
Which of the following describes the secretory phase of the menstrual cycle?
find a concise definition of "cancer". How might methods to treat cancer relate to the details in this lab exercise.
Incomplete fracture (simple fracture) of the femur
Compare and contrast the effect an extremely Hypotonic environment (i.e. pure water) has on a plant and animal cell.
Make a map of these genes showing gene order and distances between genes. SHOW ALL WORK to get credit!! Use addition paper if needed.
when chicken egg whites( which are chiefly composed of proteins) are heated they harden although we cannot reverse this process, we can dissolve the hardened egg white if we heat it in a solution containing a strong detergent.
Also, explain the difference between pasteurized processed American cheese, pasteurized processed American cheese food, and pasteurized processed American cheese product?
Determine which of the following in an enzyme that is involved in both cell cycle control and DNA repair?
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