Viruses are not living because?

-they are made of cells

-they cannot synthesize DNA or RNA

- they cannot reproduce on their own

- they do not contain a cell membrane

Why is it beneficial for cells to be small? Select all that apply. a. to quickly move waster products out of the cell b. to create a small surface area to volume ratio c. a small size slows down material exchange, which is beneficial to the cell d.

Why would a decrease in the density of the ozone layer in earth's atmosphere cause public health problems?

What two enzymes did avery use

Two patients were admitted to the hospital. One patient was diagnosed with salmonella poisoning and the other had west Nile. Which best describes their sickness?

The most successful of the invertebrate phyla with respect to the numbers of species is a. Annelida. b. Arthropoda. c. Mollusca. d. Echinodermata. e. Nematoda.

During the cardiac cycle, the bicuspid valve closes: a. while the ventricle is in diastole b. when the ventricle is in systole c. while the atrium is contracting

What is a gene family? what mechanism generates them?

Calculate the percent increase in HFC emissions between the years 2005 and 2015. A) 10% B) 50% C) 100% D) 200%

Small adaptations allow species to occupy similar niches. O True O False

People who have hemophilia would probably be most concerned about