What holds the sides of the dna ladder together?

Humans produce skin cells by mitosis and gametes by meiosis. The nuclei of skin cells produced by mitosis will have A) half as much DNA as the nuclei of gametes produced by meiosis.

How many bones do our bodies have?

The practice where advanced learners are separated from regular learners is referred to as:

Which is an example of commensalism in the tropical rainforest? A. Insects lay eggs in the sloth's waste. B. Sloths are food for other animals. C. Algae live in a sloth's fur, providing it with camouflage. D. Parasites feed on the sloth's body.

Carbohydrates, DNA and lipids can be found in living things as long molecular chains. Which of the following statements describes how DNA differs from lipids and carbohydrates.

Which class of immunoglobulins sensitizes cells to allergens?

Which statement about somatic mutations is true? A. They exist in all the cells of the body. B. They are acquired through exposure to mutagens. C. They are inherited via sperm and egg cells. D. They are passed on to offspring.

In year three the farmer discontinue the use of the insecticide Which statement would best predict the population in generation 4

What happens to carbon atoms during cellular respiration or fermentation?

How are photosynthesis and chemosynthesis similar?