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Guest
Environmental manipulation can result in unforeseen consequences true or false
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Jaeden Cowan
Why do some leaves turn yellow or orange in the fall?

A) to attract beneficial insects

B) because the chlorophyll pigment has broken down

D) because the carotenoid pigment has increased
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Paris Pollard
What is the main characteristic of eusocial groups?
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Koen Liu
Which of the classification groups would contain the most similar members?
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Judd
Describe a situation that could cause lactic acid to build up in human muscle cells?
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Shyann Gonzalez
Which of the following are materials or equipment used in this lab to extract DNA?

Mark ALL responses that apply.

a. centrifuge and sample tubes

b. centrifuges and micro pipettes

c. centrifuge, micro pipettes, warm water bath

d. liquid chemical solutions and cheek swab

e. inoculating loop and flame
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Lacey Hudson
If the extracellular fluid has an excess of sodium ions, a. sodium ions move into cells b. intracellular fluid moves to the outside of cells c. phosphate and calcium ions are eliminated in feces d. blood levels of arsenic and oxalate increase
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Simone Contreras
Why did the population of deer increase during the wolves absence?

a Humans planted more plants in the area

b Their predators were gone

c The deer switched from asexual to sexual reproduction

d Rivers brought more fish to the area
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Nelson Hayes
In which phase of cell cycle does synthesis of DNA take place?
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Marley
What is the probability that the first child of two heterozygous brown eyed parents will be blue eyed? if the first child is blue eyed what is the probability that the second child will be blue eyed?
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Annalise Morse
A scientist is trying to determine the population size of western fence lizards (Sceloporus occidentalis) in the Sycamore Canyon Park in Riverside using the mark-recapture method. During her first sampling event, she caught and marked 50 lizards which she then released back into the population. A week later she caught a total of 45 lizards, 7 of which were marked. What is the estimated population size of the western fence lizard?
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Simeon Bradley
A 27-year-old female presents with a chief complaint of burning and pain on urination. she has no previous history of urinary tract infection (uti). what are some additional symptoms consistent with a diagnosis of lower uti
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Adelyn Waller
If all individuals in the last remaining population of a particular bird species were all highly related, which type of diversity would be of greatest concern when planning to keep the species from going extinct?
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Sharon Wagner
When is a large event such as a major earthquake not a disaster?
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Phillip Bartlett
Mitochondria are organelles found in both plant and animal cells. These organelles are rod-shaped with cristae and highly folded inner membranes. Mitochondria are responsible for A. synthesis of new molecules. B. structural support. C. transporting materials. D. cellular respiration.
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