The theory of ___ was proposed to explain the possible origin of chloroplasts and mitochondria. evolution endosymbiosis endocytosis cells

Each person makes more than 1 million different b cell antigen receptors and more than 10 million different t cell antigen receptors. how is such diversity in antigen receptors generated?

Which of the following is not an anti-predator defense mechanism?

Dr. Stott is conducting a study to determine what 9-year-olds know. Based on theory, he believes that the 9-year-olds will advance in knowledge based on instructions. Dr. Stott's belief is based on:

What is the term used for the elements and compounds before a chemical reaction takes place?

How are climax communities different from pioneer communities? A. pioneer communities have complex food webs, while climax have simple food chains B. pioneer communities contain few species, while climax communities have many species C.

Question 1 Bernoulli's principle states that fluid velocity decreases when flow is restricted. 1) True 2) False

How many cells are produced in Mitosis

Which of the following shows the correct unit of weight listed from largest to smallest? A. Gram, microgram, milligram, kilogram B. Microgram, milligram, gram, kilogram C. Kilogram, gram, milligram, microgram D. Milligram, microgram, kilogram, gram

Choose the incorrect statement The generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron.

Temperature can be used to measure a particle's chemical energy. ionic energy. kinetic energy. potiental energy.