Lesson 3 And 4

Question 1

Virus

Answer 1

A tiny, non living particle that enters and then reproduces inside a living cell.

Question 2

Host

Answer 2

An organism that provides a source of energy or a suitable environment for a parasite to live with, in, or on.

Question 3

Vaccine

Answer 3

A substance used in a vaccination that consists of pathogens that have been weakened or killed but can still trigger the body to produce chemicals that destroy the pathogens.

Question 4

Bacteria

Answer 4

Single-celled organisms that lack a nucleus; prokaryotes

Question 5

Protist

Answer 5

A eukaryotic organism that cannot be classified as an animal, plant, or fungus.

Question 6

Parasite

Answer 6

An organism that benefits by living with, on, or in a host in a parasitism interaction.

Question 7

Resistant

Answer 7

Able to work against or hold off an opposing force

Question 8

Tissue

Answer 8

A group of similar cells that perform a specific function

Question 9

Vascular Plants

Answer 9

A plant that has true vascular tissue for transporting materials.

Question 10

Nonvascular plants

Answer 10

A low-growing plant that lacks true vascular tissue for transporting materials.

Question 11

Vertebrate

Answer 11

An animal with a backbone.

Question 12

Invertebrate

Answer 12

An animal without a backbone.

Question 13

Organ

Answer 13

A body structure that is composed of different kinds of tissues that work together.

Question 14

Mammal

Answer 14

A vertebrate whose body temperature is regulated by its internal heat, and that has skin covered with hair or fur and glands that produce milk to feed its young.

Question 15

Symmetry

Answer 15

Symmetry occurs when the organism can be divided into two or more similar parts.