________ diffuses into the air spaces within the leaf, then it diffuses into the cells where photosynthesis happens.
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Vacuole
________- Contains cell sap, a weak solution of sugar and salts.
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Meristem tissue
________ in plants can differentiate into any type of plant cell throughout the life of the plant.
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Ribosomes
________- Where proteins are made in the cell /the site of protein synthesis.
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Active transport
________ allows mineral ions to be absorbed into plant root hairs from very dilute solutions in the soil.
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Stains
________ are used to highlight objects in a cell by adding colour to them.
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genetic material
The ________ is not enclosed in a nucleus.
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Cytoplasm
________- Gel like substance where most of the chemical reactions happen.
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Chloroplasts
________- Site of photosynthesis which makes food for the plant.
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Mitochondria
________- These are where most of the reactions for aerobic respirations take place.
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Plant
________ and animal cells (eukaryotic cells) have a cell membrane, cytoplasm and genetic material enclosed in a nucleus.
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Oxygen
________ (produced in photosynthesis) and water vapour also diffuse out through the stomata.
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mitosis
In ________ one set of chromosomes is pulled to each end of the cell and the nucleus divides.
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Nucleus
________- Contains genetic material that controls the activities of the cell.
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green substance
They contain a(n) ________ called chlorophyll which absorbs the light needed for photosynthesis.
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DNA
The ________ replicates to form two copies of each chromosome.
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Cell
________ membrane- Holds the ________ together and controls what goes in and out.
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Differentiation
________ is the process by which a cell changes to become specialised for its job.
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embryo
In therapeutic cloning a(n) ________ is produced with the same genes as the patient.
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Substances
________ may move into and out of cells across the cell membranes by diffusion.
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electron microscope
The ________ has increased the understanding of sub cellular structures because they have a higher resolution.
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number of sub cellular structures
Before a cell can divide it needs to grow and increase the ________ such as ribosomes and mitochondria.
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Phloem
________ and xylem cells from ________ and xylem tubes, which transport substances such as food and water around plants.
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temperature
The ________: The higher it is, the faster the diffusion rate because the particles have more energy so move around faster.
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slide
A(n) ________ is a strip of clear glass or plastic onto which the specimen is mounted.
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Osmosis
________ is the diffusion of water from a dilute solution to a concentrated solution through a partially permeable membrane.
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Microscopy techniques
________ have developed over time as technology and knowledge have improved.
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Stem cells
________ from meristems in plants can be used to produce clones of plants quickly and economically.
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Crop plants
________ with special features such as disease resistance can be cloned to produce large numbers of identical plants for farmers.
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surface area
The ________ of the membrane: The bigger it is, the faster the diffusion rate because more particles can pass through at once.
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cell membranes
Water may move across ________ by osmosis.
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dependent variable
The ________ is the chip mass and the independent variable is the concentration of the sugar solution.
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nucleus of a cell
The ________ contains chromosomes made of DNA molecules.
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alveoli
The ________ are specialised to maximise the diffusion of oxygen and carbon dioxide.
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multicellular organisms
In ________, surfaces and organ systems are specialised for exchanging materials.
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Sugar molecules
________ are used for cell respiration.
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Diffusion
________ is the spreading out of the particles of any substance in solution, or particles of a gas, resulting in a net movement from an area of high concentration to an area of lower concentration.
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Respiration transfers energy
________ that the cell needs to work.
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gill filaments
The ________ are covered in lots of tiny structures called lamellae which increase the surface area even more.
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Iodine solution
________ is a stain.
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single DNA loop
It is a(n) ________ and there may be one or more small rings of DNA called plasmids.
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function of a sperm
The ________ is to get the male DNA to the female DNA.
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Light microscopes
________ use light and lenses to form an image of a specimen and magnify it.
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cell division
In mature animals, ________ is mainly restricted to repair and replacement.
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