Plasmids are important in biotechnology. give a full and complete definition of plasmid.

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

How do the sperm cells get from the stigma to the ovules?

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.