🧫 Cells 🔬 Flashcards
What is the function of the nucleus
Control centre of cell
What is a tissue?
A group of similarly structured cells which come together to form part of an organ
What is a stem cell?
An undifferentiated cell which can divide into many cells it can also change into a number of different cells e.g. nerve cells
What are the advantages of embryonic stem cells?
- it is easier to culture than adult stem cells
- it can change into a number of different cells
What is one use of stem cells in medicine?
Used to treat leukaemia – blood cancer and is used in bone marrow transplants
What are the ethical issues that cause concern in stem cell research?
- murder to use embryonic cells because they’re not given the chance to grow
- ignoring the rights of the embryo
- scientists are playing God
- could lead to “designer babies”
How are stem cells used to treat leukaemia – blood cancer?
Bone marrow transplants
What are the structures found in plant cells which are not found in animal cells?
- chloroplasts
- cellulose cell wall
- vacuole
- starch grains
How do you calculate the magnification of a cell?
Length of image
Actual size x magnification
I
A. M
What are the effect of temperature on the rate of diffusion?
Diffusion
The random movement of a substance from where it is in a high conc area to a low conc area
Where do plant stem cells form?
Meristems
Cell
Basic building block of living organisms
🧫
Tissue
Groups of cells with similar structures and functions e.g skin 🤌
Organ
Groups of different tissues working together to form a structure with a particular function e.g brain 🧠