cells and organisms (part 1)
0.0 / 5
- Created by: sophie_kk
- Created on: 15-11-19 18:01
life processes
nutrition, respire, excrete,respond to stimuli, move, control their internal conditions, reproduce, grow and develop
1 of 36
levels of organisation
organelle, cell, tissue, organ, system, organism
2 of 36
organelle
structure within a cell that carries out a particular function eg nucleus, chloroplast, mitochondria
3 of 36
cell
units that make up a living organism eg ovum, root hair cell, palisade cell
4 of 36
tissue
collection of cells with similar structure and function eg ovarian, epidermis, muscle
5 of 36
organ
collection of tissues that work together to perform a particular function eg ovary, leaf, root
6 of 36
system
several organs working together eg reproductive, root system, endocrine
7 of 36
cytoplasm
where chemical reactions occur - made of cellulose
8 of 36
nucleus
controls the activities of the cell, and contains DNA
9 of 36
cell membrane
forms a boundary between the cytoplasm of the cell and the outside - controls what goes in and out of the cell
10 of 36
cell wall
made from cellulose and helps the cell to keep its shape
11 of 36
mitochondria
site of respiration
12 of 36
chloroplasts
site of photosynthesis, and absorb light energy
13 of 36
chlorophyll
green pigment
14 of 36
ribosomes
site of protein synthesis
15 of 36
vacuole
changes size depending on the amount of water
16 of 36
what are the extra features of a plant cell?
cell wall, vacuole, chloroplasts
17 of 36
digestive system
digestive system
18 of 36
gas exchange system
lungs, exchange oxygen and carbon dioxide
19 of 36
circulatory system
heart and blood vessels, transport materials around the body
20 of 36
excretory system
kidneys, filters toxic waste materials from blood
21 of 36
nervous system
brain, spinal cord, nerves which coordinate the body's actions
22 of 36
endocrine system
glands secreting hormones, which acts as chemical messengers
23 of 36
reproductive system
produces sperm in males and eggs in females + allowing development of embryo
24 of 36
differentiation
when a cell becomes specialised depending on where they are located in the embryo
25 of 36
how does differentiation occur?
an embryo begins with stems cells that can develop to become any type of cell in the human body
26 of 36
do adults have stem cells?
still have stem cells, but can only develop into a limited type eg bone marrow cells - red and white blood cells
27 of 36
nerve cell
elongated axon for carrying out impulses
28 of 36
smooth muscle cell from wall of intestine
elongated, contract to move food up the gut
29 of 36
xylem vessel in leaf
dead, hollow cell with strengthening rings to carry water up stem
30 of 36
guard cells from surface of leaf
special shape results in pore between cells for GE
31 of 36
ciliated epithelial cell
cilia that move In unison - can move more mucus through the lungs with ease
32 of 36
red blood cell
biconcave + no nucleus to carry more oxygen cells and carry more haemoglobin
33 of 36
stem cell therapy
using stem cells to treat or prevent a disease, or to repair damaged tissues
34 of 36
embryonic stem cells
found in the early stage of development of the embryo
35 of 36
disadvantage of using stem cells
embryo is destroyed
36 of 36
Other cards in this set
Card 2
Front
levels of organisation
Back
organelle, cell, tissue, organ, system, organism
Card 3
Front
organelle
Back
Card 4
Front
cell
Back
Card 5
Front
tissue
Back
Related discussions on The Student Room
- Grade Growth Chronicles | From C's to A's (23-24) »
- 25 mark essay question »
- AQA GCSE Biology Paper 1 (Higher Tier) 8461/1H - 17 May 2022 [Unofficial Mark Scheme] »
- Edexcel IGCSE Biology 9-1 | PAPER 1 »
- Alevel bio synoptic essay »
- AQA A-Level Biology Paper 3 [21st June 2023] Exam Chat »
- How to answer 6-mark questions in A-Level Biology? »
- mark scheme biology 2022 gcse combined science higher paper 1 »
- Opinions »
- Why am I prone to infection »
Similar Biology resources:
0.0 / 5
0.0 / 5
0.0 / 5
0.0 / 5
5.0 / 5 based on 2 ratings
3.0 / 5 based on 1 rating
0.0 / 5
0.0 / 5
0.0 / 5
4.0 / 5 based on 1 rating
Comments
No comments have yet been made