If you were hiking and wanted to show off your understanding of the differences between gymnosperms and angiosperms, what characteristics could you see with your naked eye that would help you impress your friends?
A) Presence or lack of spores
B) Presence or lack of seeds
C) Size of the male gametophyte
D) Flowers or cones
E) Presence or lack of vascular tissues
D
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When amino acid availability exceeds the needs of protein synthesis, ________
a. some amino acids are converted to urea and eventually eliminated in the urine b. the amino group can be removed and the carbon backbone metabolized for energy c. cells will make storage polypeptides in a way similar to glycogen formation d. all of the choices
The proportion of oxygen in our atmosphere today
A. has increased gradually over the past billion years as a result of cyanobacteria. B. has increased to 20% since before photosynthesis. C. has remained about the same since the first organisms developed. D. has decreased to 10%, from higher levels before photosynthesis. E. increased rapidly since the development of water-splitting photosynthesis and eukaryotes.
Four of the following are gorilla features. Which one is the exception?
a. spinal cord attached at rear of skull b. C-shaped spine c. legs longer than arms d. flat foot e. opposable big toe
An individual with blood type A marries an individual with blood type B.A. What blood types could their offspring exhibit?B. Provide the possible genotypes of parents and offspring produced.C. What pattern of inheritance is this?
What will be an ideal response?