The smallest contracting unit of a skeletal muscle is

A: Sarcomere

B: Motor Unit

C: Synapse

D: Muscle fiber

Which best describes ideal growing conditions for fungi? moist and warm hot and dry cool and damp wet and cold

Which is a homologous chromosome pair? A) chromatid B) zygote C) gamete D) tetrad

Which word in the sentence is the direct object? I brushed the horses at the stable all afternoon. A. I B. horses C. afternoon D. brushed

During cell replication, often pieces of nucleotides at the end of a DNA strand may be broken or lost.

Which of the following is the adaptation that allows animals to survive in high altitudes, which contain lower levels of oxygen? a. migration b. higher levels of hemoglobin c. insulating feathers d. higher body temperatures

Which of these activities is not considered to be a marine ecosystem threat? overfishing. ocean pollution. coastal development. ocean alkalinity?

What is another common intramuscular injection site for 2mL or less of a drug? a Ventrogluteal b. Vastus Lateralis c Deltoid d Infraspinatus

Which element acts as a hydrogen acceptor during aerobic respiration? (A) hydrogen (B) carbon (C) oxygen (D) nitrogen (E) phosphorus Can someone explain this one for me?

How do bacteria and viruses differ in the ways they affect cells in the body?

What does high water potential mean?