Calcium has an atomic number of 20; therefore, calcium has 20

protons

protons plus neutrons

shells

While Michael is sleeping, his eye muscles are moving, but all other skeletal muscles are at rest. Which of the following statements about Michael is true?

The double coiled shape of DNA is called?

During which phase of mitosis do the nuclear membrane

Which factor is most likely to have a density-independent influence on population growth? question 6 options:?

Which of the following would be an appropriate argument to predict a change in an ecosystem

How many oxygen molecules (O₂) are required each time a molecule of glucose (C₆H₁₂O₆) is completely oxidized to carbon dioxide and water via aerobic respiration,? A) 1 B) 3 C) 6 D) 12 E) 30

Which of the following sentences are correct? (1) for millions of years dinosaurs ruled the earth; they roamed freely over the land and through the oceans.

2. A flower arranger is growing some flowers in a garden. He has seeds for red, and seeds for pink plants. Both colours are found or the same allele as each other. Red is the dominant colour, while pink is recessive.

The size of a maternal (mother) or paternal (father) chromosome dictates which side of the cell equator it will gravitate towards during metaphase I. True False

What kind of doctor is neil shubin