The heart and blood vessels are the components of which human organ system? a) The Circulatory System b) The Muscular System c) The Endocrine System d) The Respiratory System

What units make up a protein? fatty acids amino acids nucleotides monosaccharides

What is the cavity that surrounds the skull? A cranial B thoracic C abdominal D pelvic E spinal

Which of the following is an example of free spores enclosed in a sac? sporangiospores mycelium vegetative hyphae conidiospores

Components of Amino Acids Every amino acid has __ in its chemical structure. Multiple Choice nitrogen potassium iron chloride

Select the correct answer. Jason is a body builder. Despite being more fit, he weighs more than his brother Ryan,who is the same height. Which is the most likely reason for this? A. Jason has more muscle mass than Ryan does. B. Jason has more body fat than Ryan does. C. Jason has more water fluid mass than Ryan does. D. Jason has a lower body mass index than Ryan does.

A mutation occurs in an eye cell of a fully-grown monkey. What will most likely happen to the monkey? A. The monkey will not be able to develop eyes. B. The monkey will not be strongly affected. C. The monkey will die very quickly. D. The monkey will pass on bad eyes to its offspring.

Which of the following terms best describes the first primitive eukaryotes? multicellular single-celled photosynthetic specialized

9. In a sewage treatment plant,bacteria are 1 added to the water before it is released into a river 2 killed by chlorine at the beginning of the process 3 used to chemically digest wastes in the water first 4 left in the purified water because they are harmless

3 Which of the following are examples of nucleic acids? Nitrogen and phosphorus Nitrogen and sugar Macromolecules and DNA DNA and RNA

Which one of the following groups is composed of prokaryotic cells? View Available Hint(s) animals protists bacteria fungi