Biology 1010: science, scientific method, molecules

Match each bond with the correct description.

Ionic bond

• Attraction between positive and negatively charged atoms or molecules

• Bond between atoms that are sharing electrons

• Bond between slightly positively charged atoms and slightly negatively charged atoms

Match each bond with the correct description.

Hydrogen bond

• Attraction between positive and negatively charged atoms or molecules

• Bond between atoms that are sharing electrons

• Bond between slightly positively charged atoms and slightly negatively charged atoms

The big bang is an example of...

• a theory

• a hypothesis

• a good TV show

• a popular band

All cats are animals is an example of...

• a theory

• a hypothesis

• a problem

• a conclusion

Which of the following features make carbon the central element of life?

• It has 4 valence electrons allowing it to form multiple bonds

• It can only form bonds with hydrogen.

• It can form ionic bonds readily with hydrogen, oxygen, and nitrogen.

• It is the only element that can store genetic information.

After testing growth rate of moss at various wavelengths of light, you find the following. Which wavelength is optimal for maximum plant growth?

• Wavelength of light: 300 nm, Growth rate: 5 mm/day

• Wavelength of light: 400 nm, Growth rate: 10 mm/day

• Wavelength of light: 500 nm, Growth rate: 8 mm/day

• Wavelength of light: 600 nm, Growth rate: 4 mm/day

If extinction is real and human caused, then we should be able to determine the specific physical cause, predict the likely effects, and determine over time if those effects have occurred. This is an example of _________.

• science

• pseudoscience

• speculation

• inductive reasoning

In order for an explanation to be considered scientific, it must be based on ____________.

• an inference
• a conclusion
• past experience
• evidence

The hierarchical levels of organization are a hallmark of life. In that hierarchy, organs come together to form what higher level of organization?

• Tissues

• cells

• Proteins

• Individuals

• Organ systems

Which is NOT a eukaryote?

• Plants

• Animals

• Archaea

• Protists