science bio 1

Question 1

Explain cell theory

Answer 1

1. All living organisms are made up of cells.
2. Cells are building blocks to organisms and how organisms are organized.
3. All cells are made from pre made cells

Question 2

Prokaryotic cells

Answer 2

Simple cells, unicellular

Question 3

Eukaryotic cells

Answer 3

complex cells

Question 4

Unicellular

Answer 4

organisms consisting of one cell

Question 5

multicellular

Answer 5

organisms consisting of multiple cells.

Question 6

Cellular respiration

Answer 6

How cells turn food into energy

Question 7

Common organelles of plant and animal cells.

Answer 7

1. Nucleas, directs activities and contains DNA
2. Cell membranes, thin layer of cell that surrounds it and controls what enters and exits the cell
3. Cytoplasm, Jelly like substance that fills cells and hold organelles in place allowing them to move when needed

Question 8

Levels of organization

Answer 8

Cells →Tissue →Organ →Organ system →Organism

Question 9

Specialized cells

Answer 9

Cells that have specific functions for specific things.

Question 10

Types of Specialized cells

Answer 10

Sperm cell, sperm is small with long tail allowing it to easily transport to egg cell. Sperm has enemies in it allowing it to easily mate with egg cell.

Egg cell: big bulky cell made to be fertilized. egg had yolk in it which provides a food source for the new organism.

Ciliated cell: the line up the air passage in our lungs. Have small hair called cilia which sweep up mucus to the through which we later spit out.

Nerve cell: Long cell which connections at the bottom. Can carry electric signals but its main job is to transport various nerve impulses throughout the body

Red blood cells: carry oxygen. Found in blood . they have big surface area which allows oxygen to freely pass through it. It contains hemoglobin which joins oxygen. Hemoglobin has iron which it mixes with the oxygen which it later transports throughout the body

Question 11

Stem cells.

Answer 11

Unspecialized cells that do a bit of everything.

Totipotent: Fertilised egg that can convert into all cells.

Pluripotent: Embryonic (Early stages of development in an organism, inner mass of an embryo) stem cells that can turn into almost any stem cell.

Multipotent: Adult stem cells that can convert into cells closely related to them.