The study of which structure was instrumental in the formulation of the modern cell theory?

A. plant cell

B. animal cell

C. cell membrane

D. DNA molecule

Suppose you do an experiment to test the effect of soil moisture on seedling growth. You test 3 different soil moisture levels, each with the same type of seed. You let the seeds grow for 2 weeks and then compare how well they grew.

The barn above looks red because certain rays of light are absorbed by the barn and other rays of light are reflected by the barn. What must be true about the original sunlight before it hits the barn?

What organelle Captures energy from the sunlight and uses it to produce food in plant cells?

Which biomolecule has the longest digestion time?

During the early stages of embryo development, dolphins have gill pouches. What does this mean? Dolphins evolved from fish. Fish evolved from dolphins. Dolphin embryos go through a fish phase during development.

In the following experiment, what is the independent variable? Dr. Honeydew would like to test the effect of chlorine on Beaker's hair color. To test this he pours heavily chlorinated pool water on the right side of Beakers head.

If a small founder population of 12 people ends up on a small island, and one member of the population had a mutation that creates a new allele, what is the likelihood that the allele will be eliminated from the population?

Homologous structures (Group of answer choices): A. are also called analogous structures. B. have identical functions. C. are shared by organisms of the same genus. D. have fully divergent functions. E.

Which of the following is true of an enzyme? (mark all that apply) a. it is a protein b. it is a catalyst c. it binds to many different substances d. it is small compered to its substrates

Which term would be applied to a regulatory condition that occurs when protein is associated with a particular section of DNA and greatly reduces transcription? A) induction B) negative control C) stimulation D) positive control E) activation