Which two embryos show the strongest structural and developmental similarities in their earliest stage of life?

A. chicken and fish

B. sea star and human

C. leech and frog

D. earthworm and snake

which of the measurments belpw os the most precise. A. gradiated cylinder - 80.6ML B. Erlenmeyer flask - 325ML C. beaker - 48ML D. beaker - 400ML

Use your understanding of the nitrogen cycle to answer the questions provided. The nitrogen cycle could not exist without.

DNA is always read in the ___ direction

Which of the following processes is an example of positive feedback? a. Increase in respiratory rate during exercise b. Shivering when body temperature decreases c. Increase in uterine contractions during childbirth

Gametes produced by an organism contain a combination of genes from that organization. In every gamete, this combination is -

Friction between a skateboard wheel and the surface produces?

What are two functions of the cell membrane

Why can eukaryotes carry out more specialized functions than prokaryotes can? A) eukaryotes have more organelles B) Prokaryotes have more organelles C) eukaryotes are bigger D) prokaryotes are bigger

How might mendel's conclusions have differed if he had studied two traits determined by alleles carried on the same chromosome?

A healthy immune system depends on an adequate supply of proteins that bind to and neutralize harmful invaders. what are these proteins known as?