What is a protein that is the main component of the thick filaments in muscle fibers and is responsible for muscle contraction?

actin

myosin

actin and myosin

nerve and bone

What effect does eutrophication have on aquatic ecosystems? A.) It prevents sunlight from reaching aquatic life below the water's surface. B.) It negatively impacts aquatic vegetation but is beneficial for all aquatic animals. C.

You are investigating the scene of a crime. The victim has been shot, what factor would indicate that it is a homicide rather than a suicide?

In which of the following would blood pressure be the lowest? a. large arteries b. large veins c. capillaries d. arterioles

A sexually transmitted disease caused by a parasitic protozoa is called

Structures are fully functional, show evidence of a common ancestor, and may or may not have the same function in different species.

Who discovered the bacteria that caused anthrax

How do red worms maintain homeostasis?

The nurse is teaching staff in a long-term facility home the principles of caring for clients with essential hypertension. which comment should the nurse include in the inservice presentation about the care of clients with hypertension?

Viruses are different from bacteria in that they can remain dormant on nonliving surfaces they can be found just about anywhere they can infect just about any form of life

Which of the following lists three popular chuck cuts?