Movement of liquid or gas particles from a high to a low concentration

Paramecia use cilia to push food into a gullet. Volvox is photosynthetic and makes its food. How does an amoeba take in food

What describes nuclear division in stem cells? A. Clonal selection B. Mitosis C. Cytokinesis D. Meiosis

Esperanza is having a prenatal test to remove a small sample of the placenta for genetic testing. Identify the test that her doctor is performing.

At the beginning of cell division the chromosome consists of what two sections

Which statement describes an advantage of renewable resources? A. They are cheaper than traditional energy sources B. They are a source of clean energy C. They are located everywhere around the world D.

The allele for a widow's peak has complete dominance over the allele for a straight hairline (w). What is the probability of a man with a straight hairline (ww) and a woman with a widow's peak (WW) having an offspring without a widow's peak?

How conjugation differs from the binary fission?

Which biome has no large trees because much of the soil is frozen?

The primary bronchi enter the lungs at an area called the

The majority of Earth's atmosphere is nitrogen, N2. The percentage of nitrogen in Earth's atmosphere remains constant as prescribed by the law of conservation of matter and because it is a reasonably non-reactive gas.