Everything I Dont Know Flashcards
What is the function of the cell membrane
Controls what goes in and out of cell
What is the function of nucleus
Controls activities of the cells and hold Dna
Features of a bacteria cell
Cell membrane
Cytoplasm
Cell wall
DNa
What is the function of the salivary glands
Produces digestive juices
Function of the stomach
Digests food
Function of the liver
Produces bile
Function of the pancreas
Produces digestive juices
Function of the large and small intestines
Large - absorb water from u soluble food leaving faeces
Small- digests food and absorbs soluble food
What are the tissues are leaves made up of and what do they do
Epidermal covers the whole plant
Messophyll - where most of the photosynthesis occurs
Xylem and phloem - transport substances around the plants
What does amylase do and where is it made and where does it work
Breaks down starch into sugars
Made in salivary glands, pancreas and small intestine
Works in mouth and small intestines
What does protease do and where is it made and where does it work
Breaks down protein into amino acids
Made in stomach , pancreas and small intestines
Works in stomach and small intestines
What does lipases do and where are they made and where do the work
Break down fats into fatty acids and glycerol
Made in pancreas and small intestines
Work in small intestines
Why when you exercise your Heart and breathing rate increase
More oxygen and glucose needed in the muscles.
More carbon dioxide is needed to be removed
So blood has to flow at a faster rate
What is respiration
Process of releasing energy from glucose which goes on in every cell
What happens when glucose runs out during excercise
Glycogen, which is stored in the muscles is turned back into glucose to giver more energy
Give three uses of enzymes in industry
Biological detergents - breaking down protein and fats stains on clothing
Baby food - pre digests protein for babies
Fructose - glucose syrup turned into fructose by using isomerase enzyme
Give one advantage and two disadvantages of using enzymes in jdustry
A- use at lower temps means lower cost and saves energy
D- can be denatured even at a small rise of temp
Can be expensive to maintain and produce
What is an allele
Different versions of a characteristic
What did medal study
Hiw characteristics in plants were passed on from parents to offspring and use pea plants
What were the three conclusions Mendel came to
1) characteristics in plants determind by inherited units
2) units are passed on from both parents
3) units can be dominat or recessive
What’re fossils
Remains of organisms from years ago found in rocks and provide evidence of organism that lived years ago
What happens in gradual replacement
Things like teeth , bones and shells when decay get replaced by minerals . Minerals form a rock like substance shaped like the original hard part
What is casts and impressions
When organisms buried in soft material e.g, clay
Clay hardens around it and organism decays leaving a cast of itself
What is preservation
Decay only works in rig conditions e.g warmth moisture oxygen . In some substances conditions aren’t present so it doesn’t happen
So organism is preserved
