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Questions in biology

[Done] One of water's unique properties is that it has strong surface tension. What do you predict would happen if water had weak surface tension? A. Insects would not be able to land on or walk on water. B. Plants would be able to draw water from the roots up to their leaves. C. Water molecules would attract each other. D. Water would only be able to dissolve nonpolar substances.

[Done] Which of the following is NOT a synovial joint? A. Saddle B. Ball and socket C. Condyloid D. Symphysis pubis

[Done] Perception is best described as: A. Interpretation of sensory information B. Physical reaction C. Reflex response D. Light detection

[Done] Four different thermometers were used to measure the temperature of a sample of impure boiling water. The measurements are recorded in the table below. | Thermometer | Temperature Reading 1 | Temperature Reading 2 | Temperature Reading 3 | |---|---|---|---| | W | $100.1^{\circ} C$ | $99.9^{\circ} C$ | $96.9^{\circ} C$ | | X | $100.4^{\circ} C$ | $102.3^{\circ} C$ | $101.4^{\circ} C$ | | Y | $90.0^{\circ} C$ | $95.2^{\circ} C$ | $98.6^{\circ} C$ | | Z | $90.8^{\circ} C$ | $90.6^{\circ} C$ | $90.7^{\circ} C$ | The actual boiling point of pure water is $100.0^{\circ} C$. What can be concluded from the data about the reliability and validity of the thermometers? A. Thermometer Y has the highest validity. B. Thermometer Z is the most reliable. C. Thermometer W is the most reliable. D. Thermometer X has the highest validity.

[Done] Which part of the brain displays rhythmic spiking during sexual orgasm and is one of the brain regions that rats will most reliably voluntarily self-stimulate? A. hypothalamus B. preoptic area C. septal nucleus D. amygdala

[Done] Match the digestive system organ or compound with its correct function: Gallbladder Gastrin Large Intestine Proteases Small Intestine Amylase Pyloric Sphincter Stomach Houses bacteria, absorbs water and some minerals; forms feces Hormone produced by the stomach that stimulates the pancreas to release bile Stores and concentrates bile Enzyme that breaks down starch Major site for chemical digestion and absorption Site of mechanical digestion and chemical digestion of protein Enzymes that breakdown protein molecules into amino acids Regulates/limits the amount of chyme that can enter the small intestine at one time

[Done] Which step comes right before "Analyze the data" in the scientific method? A. Predict a theory. B. Conduct an experiment. C. Test the hypothesis. D. Collect the data.

[Done] Which type of molecule that can be found in living things lacks carbon atoms? A. protein B. carbohydrate C. fat D. water

[Done] These features of the fetal skull are areas where fibrous connective sheets that precede the cranial bones have not yet ossified: A. foramina B. fontanels C. epiphyseal plates D. condyles

[Done] The diagram represents a dihybrid cross between two pea plants heterozygous for both seed color and seed shape.