What chemical directly provides the energy needed for muscle contraction?

What is true of the cerebral hemispheres of the human brain

Each month, the moon starts as a new moon and slowly becomes more visible, appearing larger with time. What is this process called?

Which statement is true about the thyroid hormones? (1) They increase the rate of metabolism in cells throughout the body. (2) They control how quickly cells use energy. (3) They are not steroid hormones.

Which best describes the Earth's inner core? A. hot and solid B. hot and liquid C. cool and solid D. cool and liquid

A concordance of 50% for a trait occurring in identical twins only provides evidence for the role of nature or genes in the development of this trait, and does not yield any information regarding the role of nurture or environment in this trait.

How many cells does a fish have? Do they maintain homeostasis?

What types of reproductive isolation may have been important in galápagos finch speciation? a. geographic isolation and temporal isolation b. geographic isolation and behavioral isolation c. behavioral isolation and temporal isolation d.

The loss of the ability of the larynx to produce normal speech sounds is called:

Explain how a blood glucose concentration of 7.5 mmol dm-3 would be brought back to normal in the body of a mammal and why this is a negative feedback mechanism

What is the salinity of ocean water