Marine flowering plants produce ____
a. a sporophyte
b. a gametophyte
c. tetraspores
d. seeds
e. carpospores.
D
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Answer the following statements true (T) or false (F)
1. Of the 20 amino acids in all organisms, essential amino acids are obtained by food consumption. 2. If a protein is denatured, its structure has been changed enough to make the protein nonfunctional. 3. Proteins store the genetic information of the cell and transmit it to the next generation. 4. When Herceptin medication is used to stop the excessive action of receptor proteins in breast cancer cells, slowing their division, the receptor proteins are within the cell nucleus where the cell is regulated. 5. Endosymbiosis theory is proposed in large part because of the resemblance of mitochondria and chloroplast structures to prokaryotes.
What structure is produced during meiosis I in the male?
A. secondary spermatocyte B. spermatogonium C. primary oocyte D. immature sperm E. late spermatid
Cholesterols are typically found in ________ cytoplasmic membranes
A) eukaryotic B) bacterial C) archaeal D) prokaryotic E) both eukaryotic and prokaryotic
Patient's serum, influenza virus, and red blood cells are mixed in a tube. What happens if the patient has antibodies against influenza virus?
A) agglutination B) hemagglutination C) complement fixation D) hemolysis E) hemagglutination-inhibition