Which of the following molecules is the subunit of DNA that links together to form strands of DNA?

A. a codon

B. a polymerase

C. a phosphate base

D. a nucleotide

How is bacteria similar to birds?

Stress can directly undermine health and physical well-being by

what type of transport takes place when a protein allows an on to enter a cell, but no additional energy is needed to make this happen

Which step involves water changing from a liquid to a gas

Which are useful organisms in biotechnology? A) antibiotics B) proteins C) growth factors D) bacteria

According to the Hardy-Weinberg principle, genetic equilibrium would be more likely in a population of mice if :

True or false particles such as sand move in flowing water by

A minimum of how many minutes is need to achieve the benefits of Cardiovascular activity

Chimpanzees reproduce sexually, and sponges reproduce asexually. What disadvantage do chimpanzees have compared to sponges

What is the immune system? A. The group of cells and organs that protect the body from disease. B. A group of cells that undergoes apoptosis to protect the body. C. A group of organelles that digest particles that invade the cells. D.