Neil wanted to see how the pressure in his bicycle tires changed with temperature. What is the dependent variable in this experiment?
a. the bicycle tires
b. the temperature
c. the air pressure in the tires
d. the height of the bicycle
1. Which of the following questions could a scientist try to answer through experimentation?
a. Do fish like to swim in fish tanks?
b. Were dinosaurs afraid of people?
c. Does more sunlight cause a flower to grow larger?
d. is it easier to play a guitar or a trumpet?
If you want credit for the blogs, be sure that your answers are correct. Look the answer up on line or use your textbook.
1. Ella has brown hair and green eyes. What is the name of the segment of DNA that helps determines traits, such as brown hair and green eyes?
a. a chromosome
b. a nucleuc [...]
1. Which small component of the respiratory system are responsible for the movement of oxygen through the blood?
a. bronchi
b.alveoli
c. nephrons
d. arteries
1. Which cells in the body fight disease?
a. red blood cells
b. white blood cells
c. liver cells
d. bone cells
Researchers from the University of Granada and the University of Barcelona have shown that treatment with maslinic acid, a triterpenoid compound isolated from olive-skin pomace, results in a significant inhibition of cell proliferation and causes apoptotic death in colon-cancer cells. Maslinic acid is a novel natural compound and it is able to induce apoptosis or [...]
The evolutionary history of diatoms — abundant oceanic plankton that remove billions of tons of carbon dioxide from the air each year — needs to be rewritten, according to a new Cornell study. The findings suggest that after a sudden rise in species numbers, diatoms abruptly declined about 33 million years ago — trends that [...]
1. All of the following are functions of the nervous system except_______________
a. receiving information
b. responding to stimuli
c. maintaining homeostasis
d. preventing disease
NASA and the National Science Foundation have successfully launched and demonstrated a newly designed super pressure balloon prototype that may enable a new era of high-altitude scientific research. The super-pressure balloon ultimately will carry large scientific experiments to the brink of space for 100 days or more.
This seven-million-cubic-foot super-pressure balloon is the largest single-cell, super-pressure, [...]
New tires allow race cars to take tight turns at high speeds. Hind wings give moths and butterflies similar advantages: They are not necessary for basic flight but help these creatures take tight turns to evade predators.
“To escape a predator, you don’t have to be fast, you just have to be more erratic,” said Tom [...]
