Plants growing indoors tend to bend their stems so that their leaves turn toward a window. What does this suggest about the levels of reactants for photosynthesis?

What will be an ideal response?


The levels of light are too low.

Biology & Microbiology

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How many DNA triplets encode 60 amino acids?

A. 180 B. 30 C. 20 D. 60

Biology & Microbiology

The figure above is an example of



A. punctuated equlibrium.
B. anogenesis.
C. gradualism.
D. speciation based on sexual selection.
E. anogenesis and speciation based on sexual selection.

Biology & Microbiology

By consuming the mussel Mytilus californianus, the sea star Pisaster ochraceous prevents the mussel from outcompeting other species. In this community, the seastar is acting as a:

1.Dominant competitor 2.Grazer 3.Keystone species 4.Scavenger

Biology & Microbiology

The uptake of neutral amino acids such as leucine, histidine, and valine is inhibited in brain cells of

PKU individuals. Indicate whether the statement is true or false.

Biology & Microbiology