What part of the gi tract prevents a person from choking while swallowing?

a. pyloric sphincter

b. epiglottis

c. upper esophageal sphincter

d. mouth?

All but one is a function of the cell wall

GIN 1. What is pesticide resistance? Describe how this is beneficial to crop farmers, and describe what effect this could have on the environment.

What special property must the dna have to establish binding between the sliding clamp and dna?

What are the process in which materials move through a cell membrane

Identify two causes of air pollution and its effects on human health?

Slice of cheese is 3.0°C and is sitting on a dish that is 3.0°C. If the dish and cheese are in a refrigerator that is set to 3.0°C, which of the following statements is true? a.

Some types of organisms can increase genetic variation through reproduction. They are able to combine the genetic material of two parents, rather than copying the genetic material of a single parent. Which organisms are capable of this?

Unlike a lytic infection, a lysogenic infection a. allows viruses to remain inactive for a while within a host. b. involves a host. c. requires a virus to inserts its nucleic acid into a host cell's DNA. d. involves a virus and its nucleic acid.

Fill a bucket with water. Wait until the water stops moving around and becomes completely still. Tap the side of the bucket and watch what happens. Ripples form on the surface of the water.

Discuss the order in which seed dispersal mechanisms could have evolved