Answer:
A double membrane bound organelle involved in the synthesis and storage of food, and is commonly found within the cells of photosynthetic organisms, like plants. Supplement. One of the distinctive features of a plant cell is the presence of plastids.Types of Plastids
Chloroplasts.
Chromoplasts.
Gerontoplasts.
Leucoplasts.
Answer:
Ancient landmasses
Explanation:
The same fossils being found in widely separate areas can help scientists infer the geography of the continents of that time.
For example: Africa and South America used to be connected during the Permian Period.
Scientists can confirm this because both continents are home to similar fossils.
Answer:
Facilitate diffusion by using a transporter
Explanation:
Facilitate diffusion is a type of transport in which a transporter protein is used to transport the molecule across the cell membrane along its concentration gradient. As the movement is along the concentration gradient and does not require energy so it is a type of diffusion.
Glucose travels in the cell by facilitating diffusion because it requires transporter to move across the cell along the concentration gradient. In facilitating diffusion the rate of transport in high than simple diffusion.
Answ
Left - antigen
Top Right - antibody
Bottom right - B cell
Explanation:
Antibodies (top right label) are Y shaped proteins involved in the detection of pathogens. They specifically detect molecules associated with pathogens called antigens (left).
Antibodies are produced by B cells (bottom right) which are a specialised class of immune cells that make up part of the adaptive immune system. B cells are often referred to as white blood cells.
