Organisms that cannot make their own food and must obtain energy from external sources are called a. autotrophs. b. thylakoids. c. plants. d. heterotrophs.

What is a difference between ribosomes in prokaryotes and ribosomes in eukaryotes?

Question 19 of 20: Select the best answer for the question. 19. At the complete end of cellular respiration, how many molecules of ATP are produced? A. 38 OB. 15 C. 26 D.

What is meant by allele frequency

1a. the hmgr-n3 allele fails to bind with srebp. what part of the gene is broken in this allele? (circle one)

Which of the following is FALSE? (A) Each nerve fiber sits in a loose connective tissue called the endoneurium. (B) The axon and its associated glial cells form the nerve fiber.

What do the data suggest about the effects of cane toads on the predatory behavior of black snakes in areas where the toads have been present for 40-60 years? a.

What are the two main divisions of the nervous system called?

What characteristic about the tundra biome listed below does not contribute to a reduction of carbon dioxide on Earth? a. nutrient-poor soil b. permafrost c. plants and their trapped carbon dioxide are frozen in the earth d. carbon dioxide sink

Is the effect of light on flowering patterns of plants independent or dependent?

The relationship between transcription and translation?