Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
31 Cards in this Set
- Front
- Back
|
Anaerobic respiration in yeast equation |
Glucose - > carbón dioxide + ethanol (+energy) |
|
|
What's fermentation? |
When anaerobic respiration produced ethanol...its the process to make beer too |
|
|
What's an organ system? |
Organs that work together |
|
|
Unicellular organism example + adaption? |
Amoeba - - adapted to living in water, has a contractile vacuole to collect any excess water + squeeze it out of the cell membrane |
|
|
Two functions of organs |
Digesting for / killing bacteria |
|
|
Villi adaptions |
-they have a thin outer layer of cells -they have a good bloody supply -they prodlvide a large surface area for absorption |
|
|
What organ produces bile? |
Liver |
|
|
What two nutrients does the body get energy from? |
Carbohydrates and lipids |
|
|
Foods that contain fibre |
Vegetables, fruit and cereals |
|
|
Two ways food is broken down by the body |
Mechanically, and chemically |
|
|
Why do we need to digest our food? |
To break down large insoluble food molecules into smaller soluable ones to absorb their nutrients and diffuse them into the blood supply |
|
|
Why does tar in cigarette smoke cause smokers to cough more |
The tar from cigarettes damage the cilia in the smokers Airways Meaning they can't get rid of mucus properly The mucus sticks in their airwyas and causes them to coughs |
|
|
Hallucinogens drugs examples |
Ecstasy / LSD/ solvents |
|
|
What does the placenta do? |
It Allows the blood of the baby to get close to the blood of the mother so that substances like oxygen, food and wastes can be exchanged |
|
|
When is a baby "fully developed"? |
39 weeks |
|
|
Ways leaves are adapted to photosynthesis |
-they're broad /large surface area -most of their chloroplasts are found in cells near the top of the leaf _the underside is covered in stomata _there are air spaces between the leaf cells -they contain a network of veins |
|
|
What is DNA |
A long list of chemical instructions on how to build an organism |
|
|
What is a double helix? |
A spiral of two chains wound together |
|
|
Properties of useful polymers |
Insulators to slow down energy being transferred by heating, insulators to reduce energy being transferred electrically, flexible, low density, easily moulded |
|
|
The 9 processes in the rock cycle |
Weathering, erosion transportation, deposition, burial/compression/cementation, heat/pressure, melting, cooling, exposure... To weathering |
|
|
How are igneous rocks formed? |
Through magma, often got to the crush by volcanoes |
|
|
Structure of the crystals of igneous rocks |
Contain various minerals in randomly arranged interlocking crystals. Large crystals mean that the rock has cooled slowly |
|
|
Two types of igneous rock |
Extrusive igneous rock cools quickly above ground Intrusive igneous rocks cool slowly under ground and get exposed when rocks above then wear away. |
|
|
How are Sedimentary rocks formed? |
From layers of sediment (rock fragments or dead matter) laid down in lakes or seas over millions of years. They can also form when water evaporates and leaves a dissolved solid behind |
|
|
How are metaphoric rocks formed? |
They're the result of heat and Increased pressure actin on existing rocks over long periods of times They may also have tiny crystals and some have layers.. |
|
|
Examples of metamorphic rocks |
Marble, slate, schist |
|
|
Examples of sedimentary rocks |
Limestone, chalk and sandstone |
|
|
Examples of igneous rocks |
Basalt (extrusive) Granite (Intrusive) |
|
|
What do we get from crude oil? |
Plastics, fuels/energy |
|
|
Recycling materials means we can burn fewer fossil fuels... Why? |
Recycling materials save energy, which we usually get from burning fossil fuels |
|
|
What's the role does photosynthesis play in the carbon cycle? |
It removes the carbon dioxide from the air |
