Science Exam Chapter 7 :D

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

What happens when a virus enters a host cell ?

it is sometimes active and sometimes latent

_______ immunity develops when a mother passes antibodies on to her unborn baby

natural

Peanuts and peas contain nitrogen-fixing bacteria in growths on roots called _____

nodules

What is the purpose of the capsules on bacteria ?

protects bacterium from drying out

Which process can viruses undergo ?

replicate themselves

Which of the following is NOT a method to prevent the spread of viral diseases ?

share cups with a sick person

A virus attaches to a host cell. What is the next process in the replication cycle ?

the virus inserts its genetic material or DNA into the host cell

Which of the following is a means for bacteria to enter your body ?

through the food you eat, through a cut, in the air you breathe

Viral diseases are dfficult to treat for which reason ?

viruses are constantly changing or mutating DNA

Viruses can infect all of the following except ____

water

There are approximately how many known species of bacteria ?

5,000

Which components does a virus have ?

DNA or RNA

Which of the following does NOT protect you from viruses ?

antibiotics

Which element can some plants obtain from bacteria ?

nitrogen

Which of the following do viruses need to carry on functions ?

organisms

Which of the following is NOT a shape common to viruses ?

square

Bacteria that live in places with a supply of oxygen are called ?

aerobic bacteria

What does the flagellum of a bacteria do ?

allow the bacteria to move

Vaccines trigger the production of ____

antibodies

Bacteria are used to make all the following foods except ___

apples

An antibiotic is a drug used to kill ______

bacteria

One type of bioremedition uses ____ to break down wastes and pollutants into less harmful material

bacteria

What do bacteria do in a cow's stomach ?

break down cellulose in plants

Helpful bacteria can do all of the following except ______

cause food poisoning

Viruses attack and destroy which of the following ?

cells

Bacteria are responsible for all the followng in humans except _____

digesting uranium

Thick walls produced by some bacteria pathogens are called _____

endospores

Bacteria are found ____

everywhere on earth

Which of the following is NOT a food that is usually pasteurized ?

fresh fruit

Which of the following is NOT a method used by bacteria to obtain food ?

grow and harvest their own food

Harmful bacteria in food can be killed by _____

heat

What is the purpose of the pili on the surface of bacteria ?

help bacteria stick to surfaces

Of the following, where are archea likely to be found ?

hot springs


Kaugnay na mga set ng pag-aaral

Тестові екзаменаційні завдання з навчальної дисципліни «Політична економія»

View Set

HIT Implementation Support Specialist

View Set

Women's Health/Disorders and Childbearing Health Protection

View Set

Chapter 14 DNA: The Genetic Material Assignment

View Set

Chapter 35 - Geriatric Emergencies

View Set

Nursing Care of Pts Having Surgery Med Surg Chapter 12/ #7

View Set