Ferns and mosses are similar because both
A) produce drought-resistant seeds.
B) have dominant sporophytes.
C) have flagellated sperm.
D) have sporophytes that produce diploid spores.
Answer: C
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Shitake mushrooms are decomposers that break down biological molecules from dead organisms. These organisms
belong to the ____ kingdom.
a. Protist b. Animalia c. Bacteria d. Fungi e. Plantae
The scientific work that established DNA, rather than protein, as the molecule of heredity was performed prior to
A) Mendel's work on heredity. B) the elucidation of the double helix structure of DNA. C) Antonie van Leeuwenhoek's observation of internal cell structures. D) the description of the enzymatic steps of glycolysis. E) the formation of the chromosome theory of heredity.
Which of the following would you expect to happen if you added EGF to a cell extract from which only the plasma membrane fraction has been removed?
A) cAMP will be produced. B) Gs? will be activated. C) Adenylyl cyclase will be activated. D) Calcium ions will be released. E) None of the above will happen.
Electron transport takes place in the ________
A) mitochondria B) chloroplasts C) cytoplasm D) ribosomes