How is the radioactive decay of an element used to determine the age of a rock layer?

Which statement is correct? All organisms that can synthesize their food by means of photosynthesis are heterotrophic. All organisms that cannot synthesize their food by means of photosynthesis or chemosynthesis are heterotrophic.

Which of the following scenarios is not possible? Select one: a. A plant cell in a hypertonic solution bursts. b. A plant cell in an isotonic solution becomes flaccid. c. An animal cell in a hypertonic solutions shrivels. d.

It is said that the protoplasm cannat be analysed chemically. Why?

Which of the following are factors that would increase an individual's Basal Metabolic Rate? Select all that apply.

When a school of fish spawns, the males and females release sperm and eggs into the water. A sperm and egg cell unite to form the first cell of an offspring, which develops independently of its parents. Which term describes this process? a.

Witch organism would have the most similar traits

Write the least common multiple of 7 and 14

Each horizontal row in a pedigree chart represents a mating. a generation. several siblings. several characteristics.

Simpler communications and decreased miscommunications are associated with

What is the signal for a vesicle storing peptide hormone to move to the plasma membrane and release contents of vesicle? a. Activation of an integrin receptor b. Activation of a g-protein c. Activation of an enzyme linked receptor d.