Biology Chapter One Flashcards Preview

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Flashcards in Biology Chapter One Deck (27):
1

Magnification

Magnification is when something appears larger when viewed through a lens.

2

Resolution

Resolution is when you can tell two or more different specimens apart from each other.

3

Organism

An organism is the scientific term for a living thing.

4

Nucleus

The nucleus controls the cell it is in. It contains some genetic material which is needed to make new cells.

5

Cytoplasm

The cytoplasm is a jelly like consistency. It is where chemical reactions take place in a cell.

6

Cell membrane

The cell membrane is the outer layer of an animal cell (second outer layer of a plant cell). It controls what comes in and out of the cell.

7

Mitochondria

The mitochondria is where respiration happens. Respiration is how we get energy.

8

MRS GREN

MRS GREN stands for movement, respiration, sensitivity, growth, reproduction, excretion and nutrition.

9

Cell Wall

This is the outer layer of a plant cell. This makes the cell stronger and it provides support. It is made out of a tough fibre (cellulose) which makes the cell ridged.

10

Vacuole

The vacuole contain a watery liquid called cell sap this liquid keeps the cell firm.

11

Chloroplast

The chloroplasts is where photosynthesis happens. Chloroplasts contains a substance called chlorophyll this traps energy transferred from the sun.

12

Microscope

A microscope is an object that magnifies the specimen you are viewing under it

13

Specimen

Specimen is a sample of something. Specimen can be viewed under a microscope.

14

Slide

A slide is what you put your specimen on when viewing it under a microscope.

15

Cell

Cells are the microscopic building blocks organisms are made of.

16

Unicellular organisms

Unicellular organisms are organisms with only one cell in them hence the name "unicellular".

17

Specialised cell

A specialised cell is an adapted cell made specifically to do one job. For example a white blood cell tries to kill off any infection you get.

18

Nerve cell adaptations

Nerve cells have a long tail so it can swim through the organism easily. Nerve cells have dendrites at each end, this means the can connect with other nerve cells to send messages around the cell.

19

Egg cell adaptations

Egg cells have the same sort of features as normal cells accept it has a different job. That job is to connect with sperm and then to reproduce.

20

Sperm cell adaptations

The sperm cell have lots of mitochondria

21

Root hair adaptations

Root hair cells have a big surface area for absorbing nutrients and water. They have no chloroplasts because there is no sunlight underground. This means they do not do photosynthesis.

22

Multicellular

Multicellular means that an organism is made up of more than one cell. The opposite of unicellular.

23

Red blood cell adaptations

Red blood cells are unlike most other cells; they don't have a nucleus. They are a disk like shape which increases its surface area for carrying oxygen.

24

Diffusion

Diffusion is when particles move from a place of high concentration to a place of low concentration.

25

Rate of diffusion

The rate of diffusion is how fast or slow particles diffuse.

26

Binary fission

Binary fission is how unicellular organisms reproduce. The cell slowly multiplies everything in the cell and then once it has done that it will split in two.

27

Excretion

In organisms or cells getting rid of waste matter.