4. Which of the following statements correctly describes the response of paramecium to changes in water solute concentrations? When water solute concentrations rise, the paramecium reduces its rate of contractions. When water solute concentrations rise, the paramecium increases its rate of contractions. When water solute concentrations fall, the paramecium reduces its rate of contractions. The rate of contractions remains constant no matter what the water solute concentration is

A waste product from the breakdown of nucleic acids is __ acid. Fill in the blank square

An important function of sodium is Temperature regulation Water balance Bone formation Activation of digestive enzymes

The thyroid hormone thyroxine is vital because: It regulates metabolism It regulates the thyroid gland It regulates digestion It regulates absorption of nutrients

The two types of digestion are Chemical and enzyme Mechanical and absorption Chemical and mechanical Catabolism and anabolism

5. Give three examples of a stimulus and a possible response in humans. Stimulus: __ Response 6. Define Biology

The skin is the primary organ of which body system? A. lymphatic system B. endocrine system C. skeletal system D. integumentary system

5. What is the dense area within the nucleus called where ribosome assembly begins? vacuole chloroplast Golgi apparatus nucleolus

Name the shape of this bacteria: A vibrio B coccus C bacilli D spirillum

Multiple Choice Question The bones that form the wrist are known as __ carpal bones phalanges tarsal bones

Hot Questions

Select the correct answer. Which of the following phrases best explains the role of a habitat? A. provides interactions with other organisms B. provides water C. provides a place to reproduce D. provides a place to live

Which type of membrane protein moves sodium and potassium through the nerve cell membrane? Junction protein Transport protein Receptor protein Channel protein Enzymatic protein Cell recognition protein

Multiple Select Question Select all that apply Choose all that result from contraction of the lateral muscle of the thigh. abduction of the thigh lateral rotation of the thigh extension of the thigh adduction of the thigh medial rotation of the thigh

Match the Process to the Pool Movement Carbon Moves From -To __ Atmosphere __ __ Bioshpere __ __ __ __ __ Process Photosynthesis Respiration Decomposition Fossil Fuel Combustion __ __

The kidney is associated with which system? A. Endocrine system B. Cardiovascular system C. Skeletal system D. Respiratory system E. Nervous system

What is the direct effect of: Decreased ADH Only CO increases Only CO decreases Only BP increases Only BP decreases Both CO and BP increase Both CO and BP decrease

What are the four phases of a typical bacterial growth curve in order? Exponential, Lag, Death Stationary Lag, Exponential, Stationary, Death Death, Lag, Exponentlal, Stationary $Lag,$ Stationary, Death,Exponential

8. Oxygenated blood from the lungs enters the heart at the: a. left ventricle b. right ventricle c. left atrium d. right atrium

Bacteria that grow optimally at pH levels below 5 are classified as: Neutrophiles Alkaliphiles Acidophiles Halophiles

Which group of bacteria can survive and grow at temperatures below $15^{\circ }C$ Thermophiles Psychrophiles Mesophiles Hyperthermophiles