AP Bio: Unit 4 (CED)

Front

What is direct contact communication in plant cells called?

Back

Plasmodesmata

Front

What is the role of beta cells in the pancreas in response to increased blood glucose levels?

Back

Beta cells in the pancreas release insulin.

Front

How do MHC proteins and T cell receptors mediate cell communication over short distances?

Back

The proteins interact directly with proteins on the surfaces of other cells.

Front

In which phase of mitosis do chromosomes align at the cell's equator?

Back

Metaphase

Front

What is negative feedback in homeostasis?

Back

It reduces the output of a system to bring it back to its set point.

Front

What are gap junctions?

Back

Channels that allow direct communication between adjacent animal cells.

Front

What is the function of glucagon in blood glucose regulation?

Back

Glucagon raises blood glucose levels by promoting glycogen breakdown in the liver.

Front

What is the significance of cell surface proteins in immune response?

Back

They help in recognizing and communicating with other cells, crucial for immune responses.

Front

What occurs during prophase of mitosis?

Back

Chromatin condenses into visible chromosomes and the nuclear envelope begins to break down.

Front

What is the role of insulin in the body?

Back

Insulin lowers blood glucose levels by facilitating the uptake of glucose into cells.