Cells And Cell Transport

Question 1

What are 4 differences between plant cells and animal cells?

Answer 1

Plant cells: have a cell wall, has a chloroplast, has vacuoles, is larger, autotroph. Animal cells: doesn’t have a cell wall, doesn’t have a chloroplast, no vacuoles, is smaller, heterotroph.

Question 2

What is the function of the cell membrane?

Answer 2

Cell membrane-regulates what enters and leaves the cell. Protects the cell. Maintains homeostasis.

Question 3

What is the function of the nucleus?

Answer 3

Nucleus-controls cell activities. Contains most of DNA.

Question 4

What is the function of the ribosomes?

Answer 4

Ribosomes-site of protein synthesis.

Question 5

What is the function of the mitochondria?

Answer 5

Mitochondria-breaks down sugar to store energy in ATP. Site of cellular respiration.

Question 6

What is the function of the chloroplast?

Answer 6

Chloroplast-contains Chlorophyll. Uses energy from the sun to make food for the cell.

Question 7

What contribution did Hooke make to the cell theory?

Answer 7

Hooke-English scientist who saw cells by looking at cork under a microscope in the 17th century, he also named cells.

Question 8

What contribution did Leeuwenhoek make to the cell theory?

Answer 8

Leeuwenhoek-Dutch scientist who observed pond water under a microscope and saw tiny living cells.

Question 9

What contribution did schleiden make to the cell theory?

Answer 9

Schleiden-in 1838 he said that all plants are made of cells.

Question 10

What contribution did Schwann make to the cell theory?

Answer 10

Schwann-discovered that all animals are made up of cells.

Question 11

What contribution did Virchow make to the cell theory?

Answer 11

Virchow-proposed that all living cells arise from pre-existing cells.

Question 12

What are the three statements of the cell theory?

Answer 12

The cell theory.. All living things are made up of cells, cells are the basic units of structure and function in living things, new cells are produced from existing cells.

Question 13

What is diffusion?

Answer 13

Diffusion is the process by which particles move from an area of high concentration to an area of low concentration.

Question 14

What is osmosis?

Answer 14

Osmosis is the diffusion of water through a semi permeable membrane.

Question 15

What is active transport?

Answer 15

Active transport cells use energy to move things into and outside of the cell.

Question 16

Describe hypertonic.

Answer 16

Higher concentration of solute.

Question 17

Describe hypotonic.

Answer 17

Low concentration of solute.

Question 18

Describe isotonic.

Answer 18

Equal concentration of solute.

Question 19

Which term describes animals at homeostasis?

Answer 19

Iso tonic describes animals at homeostasis.

Question 20

Which term describes plants at homeostasis?

Answer 20

Hypotonic describes plants at homeostasis.

Question 21

What are the differences between prokaryotes and eukaryotes?

Answer 21

Prokaryotes: no nucleus, unicellular, smaller, lack membrane bound organelles. Eukaryotes: has a nucleus, mostly multicellular, larger, has membrane bound organelles.