7th grade science 6

Question 1

Host cell

Answer 1

A living cell that a virus enters to make copies of itself

Question 2

Virus

Answer 2

A non-living particle that causes a disease; a strand of hereditary material surrounded by a protein coating

Question 3

Enzymes

Answer 3

Protein that controls most chemical reactions in cells

Question 4

Inorganic compound

Answer 4

Compound that is made from elements other than Carbon; compounds that make up most nonliving things

Question 5

Mixture

Answer 5

A combination of substances in which individual substances keep their own properties

Question 6

Organic compound

Answer 6

Compounds that have carbon and hydrogen atoms; compounds that make up all living things

Question 7

Active transport

Answer 7

Takes place when energy is needed to move substances through a cell membrane; uses transport proteins

Question 8

Diffusion

Answer 8

Random movement of molecules from an area where there are more of them into an area where there are fewer of them

Question 9

Endocytosis

Answer 9

Process of taking substances into a cell by surrounding them with the cells membrane

Question 10

Exocytosis

Answer 10

Process in which the contents of a vesicle are moved outside iCell

Question 11

Osmosis

Answer 11

The diffusion of water through the cell membrane

Question 12

Passive transport

Answer 12

Movement of substances through the cell membrane without using energy

Question 13

Fermentation

Answer 13

Chemical reaction that releases energy stored in glucose molecules and produces carbon dioxide, lactic acid, and alcohol as waste

Question 14

Metabolism

Answer 14

All chemical reactions that take place in an organism

Question 15

Photosynthesis

Answer 15

Process that uses light energy, carbon dioxide, and water to produce the sugars and oxygen needed by all living things

Question 16

Respiration

Answer 16

Chemical reaction that uses oxygen to break down food molecules into simpler substances to release their stored energy

Question 17

Asexual reproduction

Answer 17

The way a new organism is produced from one organism

Question 18

Chromosome

Answer 18

The structure in the nucleus that contains hereditary material

Question 19

Mitosis

Answer 19

The process in which the nucleus divides to form two identical nuclei; the four steps include prophase, metaphase, anaphase, telophase

Question 20

Diploid

Answer 20

Cells that have pairs of similar chromosomes

Question 21

Egg

Answer 21

Sex cell formed in the female reproductive organs

Question 22

Fertilization

Answer 22

The joining of a sperm and egg

Question 23

Haploid

Answer 23

Cells that do not have pairs of chromosomes, such as sex cells

Question 24

Meiosis

Answer 24

A process that produces haploid sex cells

Question 25

Sexual reproduction

Answer 25

Two sex cells come together to produce a new organism

Question 26

Sperm

Answer 26

Sex cells formed in the male reproductive organs

Question 27

Zygote

Answer 27

The cell that forms from fertilization