What cellular structure must oxygen cross to get from outside to inside an animal cell

In a numbers pyramid, which trophic level usually has the smallest numbers? A. producer B. primary consumer C. decomposers D. tertiary consumer

Explain the goals of a sustainable development.

A neuron that has only one axon but several dendrites is classified as a: a multipolar neuron b. bipolar c. Unipolar neuron d. multidendrutic neuron

The first part of the embryo to appear outside the seed is a water - and nutrient - absorbing structure called the radicle. true or false.

What is a snp? answer a computer chip that recognizes differences in dna sequences variation in a single nucleotide of a dna sequence a tool used in dna research to cut segments of dna a drug developed from dna technology?

The universal genetic language of dna is common to virtually all organisms on earth. True or False

Why use a negative control when running gel electrophoresis? if a band shows up in this lane, what does it tell you about your pcr products?

A balance in abiotic factors is vital to healthy ecosystems.

Explain the goals of a sustainable development.

When are to animals classified as belonging to the same species?