Which cells are most likely to have the gene for making telomerase switched on?
A. The cells in a developing embryo.
B. The muscle cells of a woman who is 80 years old.
C. The skin cells of a 28 year old person.
D. The nerve cells of a 55 year old man.
Ans: A. The cells in a developing embryo.
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Which hormone is responsible for the release of follicle stimulating hormone and luteinizing hormone?
a. oxytocin b. estrogen c. gonadotropin-releasing hormone d. testosterone
A researcher brings a sample of dry soil to the lab, wets it, provides ample amounts of fertilizer, and places the soil in a container in a greenhouse. Which type of plant would be least likely to emerge?
A. Corn B. Wheat C. Liverwort D. Pine seedling E. Sunflower
Which of the following is NOT an example of an adhesion factor?
A. Lipoteichoic acid B. Glycocalyx C. Mucin D. Fimbriae E. All of the above are examples of adhesions
Which prokaryotic nutritional group uses inorganic substances to produce energy and CO2 to build organic compounds?
A. Photoautotrophs B. Chemoautotrophs C. Photoheterotrophs D. Chemoheterotrophs E. Methanoheterotrophs