In a DNA molecule, which of the following forms a base pair with adenine?

O A. Cytosine

O B. Guanine

O C. Thymine

O D. Adenine

Which describes the correct pairing of DNA bases?

For which of these questions could a testable hypothesis be developed? What is the best action movie? O Which theme park is the most fun? What makes a baseball bounce? Where can you find the best ice cream?

Male peacocks have tail feathers that make up 60% of their body length. During the mating season they fan their tails and shake these feathers in front of females. Females evaluate the tail-shaking behavior as part of selecting their mate.

Write a sentence that relates your model to processes that take place inside your own cells. Your answer should include some form of the terms mitosis, nucleus, and cell division.

The resistance trait needs to be inherited by daughter cells in order for a resulting population of to the drug 2· bacteria after selection to become resistant to a drug. a. True b. False

What is the dependent variable? Also what is the Testing Variable.

Statistics about the climate in a tundra ecosystem were collected for 30 years. which hypothesis about a population of caribou could be made based on the climate data collected? a. caribou calf survival is directly related to annual rainfall amounts.

Since plant cells do not have centrioles, how do they make spindle fibers during mitosis?

Plants use sunlight to produce some ATP during photosynthesis. How do plants produce ATP when the Sun is not out? a. Plants are secondary consumers. b. Plants also use cellular respiration. c. Plants extract ATP from the stars. d.

Describe 4 ways that we know the global climate is changing