A human embryo doesn't need the kind of yolk that is present in a chick embryo. Explain. It doesn't need any nourishment. It gets its nourishment from its mother. It can synthesize its own food.

The periodic table organizes elements by A increasing atomic mass B increasing atomic number C decreasing atomic size D different atomic color

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. Explain how this might occur, and if it would be dangerous to the individual.

An explanation of observations or events based on knowledge gained from many observations and investigations is called a

Wich type of cell does not contain a nucleus enabling it to carry more hemoglobin

What is the scientific name of frog

What must change in the ecosystem for tree to appear

What name is given to the rigid structure, found outside the plasma membrane, that surrounds and supports the bacterial cell?

Select all that apply. Which of the following are methods of classical biotechnology?

An important example of a "positive feedback loop" in the polar climate system is: a. Scientists in remote places check on each others instruments. b. Warming ocean water opens new areas for marine species. c.

Glutamic acid (Glu) and valine (Val) are two amino acids with different molecular structures. (Glutamic acid is a strongly hydrophilic molecule, and valine is a strongly hydrophobic molecule).