In the molecule Cl2, each atom attracts electrons equally.
What kind of bond is Cl2?
A. ionic
B. metallic
C. polar covalent
D. non-polar covalent
D. non-polar covalent
Cellular respiration occurs in the cell's
A. endoplasmic reticulum
B. cytoplasm
C. ribosomes
D. mitochondria
E. vacuoles
D. mitochondria
Use the unbalanced equation to answer the question.
C4H10 + 02 --> C02 + H2O
How many molecules of O2 are needed to balance the equations?
A. 7
B. 12
C. 13
D. 26
To balance the equation, we need 5 molecules of O2.
Therefore, the correct answer is:
A. 7
Which technology allowed astronauts to visit the moon for the first time on July 20, 1969?
A. the telescope
B. artificial gravity
C. the space shuttle
D. large multistage rockets
D. large multistage rockets
Which organism is not unicellular?
A. amoeba
B. diatom
C. euglena
D. paramecium
E. volvox
E. volvox
An exoplanet is defined as a planet that orbits a star outside of our solar system. Over 400 exoplanets have been discovered. Some scientists have hypothesized that some of these exoplanets may contain life.
How could current technology help determine if an exoplanet might be a suitable candidate for life?
A. high-speed spacecraft could be sent to distant star systems and land on exoplanets to investigate their surfaces for life.
B. high-powered, earth-based telescopes could see signs of life and city lights if advanced civilizations are present.
C. highly-sensitive sound meters could record evidence of sound waves since exoplanets with life may produce slightly different kinds of wave energy
D. highly-sensitive instruments could detect exoplanets with earth-like orbits based on how much light from their parent stars is blocked