Biology Semester I Midterm Review

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy (ATP).

Front

What is the smallest unit of matter?

Back

The smallest unit of matter is an atom.

Front

Which element is found in all organic compounds?

Back

Carbon is the element found in all organic compounds.

Front

What organisms perform photosynthesis?

Back

Only autotrophs perform photosynthesis.

Front

Which organelle provides energy to the cell?

Back

The mitochondria provide energy to the cell.

Front

What is the function of chloroplasts?

Back

Chloroplasts are organelles in plant cells that conduct photosynthesis.

Front

Define autotrophs.

Back

Autotrophs are organisms that produce their own food through photosynthesis or chemosynthesis.

Front

Define heterotrophs.

Back

Heterotrophs are organisms that cannot produce their own food and rely on consuming other organisms.

Front

What is the role of mitochondria in cells?

Back

Mitochondria are known as the powerhouse of the cell, converting nutrients into energy.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion is the movement of particles from an area of high concentration to low concentration, while osmosis specifically refers to the movement of water across a semipermeable membrane.