DNA
Name the structure that controls the activities of a cell.
Nucleus
What are the seven characteristics shared by all living organisms?
MRS GREN: Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition.
What is diffusion?
The net movement of particles from a region of higher concentration to lower concentration, down a concentration gradient.
What is a chloroplast?
Green organelle in plant cells
What is the diaphragm?
Muscle that controls breathing
What are DNA and RNA?
Two types of Nucleic acids
What is the difference between growth and reproduction in living organisms?
Growth is a permanent increase in size or dry mass. Reproduction is the production of new organisms/offspring.
What is osmosis?
The net movement of water molecules through a partially permeable membrane from a region of higher water potential to lower water potential.
A plant cell has a larger ______ when compared to an animal cell.
vacuole
What is the digestive system made of
stomach, small intestine, large intestine
What are genes?
DNA passed down
What is the cytoplasm?
The jelly-like liquid that fills the inside of a cell
What is the difference between diffusion and active transport?
Diffusion is passive movement down a concentration gradient and does not require energy. Active transport moves substances against a concentration gradient and requires energy from respiration.
Products of photosynthesis
glucose and oxygen
Which organ in the human body is responsible for pumping blood around the entire body, and what type of muscle tissue makes up most of this organ?
The heart; it is mainly made of cardiac muscle tissue.
how many strands of dna are there
2
What are Ribosomes?
This makes proteins
A plant cell is placed in a very concentrated sugar solution. Predict what will happen to the cell and explain why.
Water leaves the plant cell by osmosis because the sugar solution has a lower water potential. The cell loses water, the vacuole shrinks, and the cell becomes plasmolysed.
Photosynthesis mainly occurs on the
leaf
Four chambers of the heart
right atrium, right ventricle, left atrium and left ventricle
What is Deoxyribonucleic Acid?
DNA
An organism is multicellular, has chlorophyll, has cellulose cell walls, and makes its own food. Which kingdom would it most likely belong to, and what characteristics support your answer?
Plant kingdom. It is multicellular, contains chlorophyll for photosynthesis, has cellulose cell walls, and produces its own food.
A cell has a higher concentration of glucose inside than outside, but glucose continues to enter the cell. What process could allow this to happen? Explain why energy may be required.
Active transport could move glucose into the cell against its concentration gradient. Energy from respiration is required to power the transport proteins.
what are the two transport systems in plants
xylem and phloem
what does the kidney do
filter blood