The haploid stage of the red algae life cycle is called:
a. sporophyte.
b. zygote.
c. gamete.
d. gametophyte.
e. tetrasporophyte.
D
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Which type of proteins is embedded in the cell membrane in both active transport and facilitated transport?
A. carrier B. cytoskeletal C. structural D. targeted
Which of the following could be considered a habitat island?
A. a person in line at the train station B. a lake surrounded by trees C. a patch of moss on a tree trunk D. All of the answer options are correct. E. None of the answer options is correct.
The normal pH of rainfall is
A. slightly acidic, pH 5.6. B. slightly basic, pH 5.6. C. slightly acidic, pH 9.6. D. slightly basic, pH 9.6. E. neutral, pH 7.0.
Why has DNA analysis been effective recently at overturning faulty criminal convictions?
A) Genetic evidence can determine if an individual is predisposed to criminal behavior. B) Scientific evidence was not admissible in U.S. courts until just recently. C) Juries have tended to exhibit biases against DNA evidence in the past; however, that trend is now changing. D) DNA evidence is a more reliable individual identifier compared to eyewitness testimony. E) Scientists only discovered in 2005 that each individual's DNA is unique.