What features do cephalochordates lack that vertabates have

Which of the following statements about focal adhesions is TRUE? Option A: They may act as a type of sensory structure leading to cell growth. Option B: They anchor cells to the substratum. Option C: All of the choices are correct.

Fungi are classified into how many groups? 1 group 2 groups 3 groups 4 groups

A papaya has many seeds. each papaya seed can grow into a new tree. however that does not happen. why?

The bending of waves as they enter a different medium is called?

Process in which carbon dioxide, is released as a by-product of oxidation-reduction reactions ...

If the allele frequency of the HbS allele is 0.3 in a population, what is the frequency of the HbA allele (assuming this is a two-allele system) ?

How do the nucleotides in dna pair?

Which of the following describes how the septum in the heart affects blood flow? a.) It pumps blood out of the heart to the rest of the cardiovascular system when heart muscles contract. b.

Ethanol is a fuel that can be made from corn. One of the benefits of using a biomass fuel like ethanol is A. It can only be used to power certain types of machines. B. It is a nonrenewable resource. C. It is a renewable resource. D.

Which is a goal for the human genome project