Which of the following groups is made up of single-celled organisms?
a. archae
b. bacteria
c. protista
d. all of these
Ans: d. all of these
You might also like to view...
Photosynthesis is conducted in ___________
a. the cell wall b. chloroplasts c. the nucleus d. the cell membrane
Which of the following statements about 2,3-BPG is FALSE?
A) 2,3-BPG is produced by red blood cells. B) 2,3-BPG produces a rightward shift in the hemoglobin-oxygen dissociation curve. C) 2,3-BPG increases the affinity of hemoglobin for oxygen. D) 2,3-BPG is an intermediate of glycolysis. E) 2,3-BPG synthesis is inhibited by high levels of oxyhemoglobin.
Which of the following is the causative agent of tinea versicolor?
A. Microsporum B. Trichophyton C. Epidermophyton D. Malassezia
When a sperm penetrates an egg cell
A) the egg undergoes changes that attract another sperm. B) sperm and egg chromosomes merge immediately. C) the resulting cell is haploid. D) the egg has to make a copy of itself before sperm and egg chromosomes merge. E) the egg must undergo meiosis II before merging chromosomes with the sperm.