Which of the following can serve as a direct source of nitrogen for plants?
A. nitrogen gas in the air
B. amino acids in dead organisms
C. ammonia from the decomposition of dead organisms
D. denitrifying bacteria in the soil
C. ammonia from the decomposition of dead organisms
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Which subatomic particles are found outside the nucleus of an atom?
a. Neutrons b. Protons c. Electrons d. Photons
Which is incorrect about photosynthesis?
A. The light reactions take place in the cytoplasm and the light-independent reactions occur in the chloroplast. B. The light-independent reactions don't require light but can occur in its presence. C. Photosystems act as antenna to capture photons. D. The light-dependent reactions release oxygen. E. The light-dependent reactions produce NADPH and ATP.
If a person has two different copies of the same gene, they are said to be ___________.
a) Homozygous b) Heterozygous c) Polygenetic d) Haploid
The genes on the two chromosomes may have different _____.
Fill in the blank(s) with the appropriate word(s).