The human body can be provided with all of the following from food except A. amino acids. B. lipids. C. hydrochloric acid. D. proteins.

In which of the following organelles does photosynthesis take place?

A child receives an X chromosome from its mother and Y chromosome from his father what is true about this child

Does both the nucleus and the cytoplasm divides in the same stage

Over time, color variation in a population of butterflies declined. The number of color variations within the population was twelve in 1985. In 2005, the number of color variations reduced to three.

The two strands of dna that make up a double helix by covalent bonds

What do a door and a venus flytrap leaf have in common

Where would be the best place to find an alpine glacier A) Antarctica B) Greenland C) the Himalayas D) the North Pole

The Sun is A. a very small star. B. a medium-sized star. C. the largest star in the universe. D. the same size as all the other stars.

6. The blood component that has the greatest affinity for oxygen is the a) Lymphocyte" (b) Leucocytes (c) Erythrocytes (d) Thrombocyte

According to the endosymbiosis theory scientist believe early eukaryotes form from prokaryotes why do scientist believe that prokaryotes existed earlier eukaryotes