When an ant tends an aphid, it would be benefiting the aphid by removing honeydew from the aphids
anus, and benefiting from obtaining carbon.
Indicate whether the statement is true or false.
T
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Two principal organelles in eukaryotes that were apparently derived from different types of bacteria are the
A. microfilaments and microtubules. B. mitochondria and chloroplasts. C. rough ER and smooth ER. D. plasma membrane and nuclear membrane.
Unlike simple diffusion, facilitated diffusion requires energy expenditure by the cell.
a. true b. false
In radishes, two incompletely dominant genes
control color and shape. Red and white radishes are homozygous, whereas the hybrid is purple. Long and round are homozygous and, if crossed, will produce an oval hybrid. Give the F2 genotypic and phenotypic ratio produced by crossing pure-breed red long radishes with white round varieties. What will be an ideal response?
Which enzyme is used to bind DNA fragments together?
A) restriction enzyme B) lysozyme C) DNA ligase D) DNA polymerase