An organelle that is a flattened channel that begins at the nuclear envelope and snakes through the
cytoplasm is the
a. Golgi body.
b. ribosome.
c. mitochondrion.
d. lysosome.
e. endoplasmic reticulum.
E
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Researchers can cut DNA at specific base sequences using ________
a. DNA ligase b. restriction endonucleases c. cloning vectors d. probes
Which one of the following is a characteristic of asexual, as opposed to sexual, reproduction?
a. fusion of egg and sperm b. a cell splitting in half c. genes contributed by two parents d. high degree of genetic variation e. formation of a fertilized egg
According to the modern theories on how life formed on Earth, prokaryotes are thought to have evolved before eukaryotes. Provide evidence to support that pattern of evolution based on the composition of the early Earth's atmosphere
What will be an ideal response?
The functional units of kidneys are __________.
a. neurons b. glomeruli c. ureters d. nephrons e. collecting ducts