Chlorophyll is the pigment in plants that absorbs sunlight, which is essential for photosynthesis.

Chloroplasts are the organelles in plant cells where photosynthesis occurs, converting light energy into chemical energy.

Chloroplasts are responsible for photosynthesis, converting light energy into chemical energy in plants.

DNA polymerase is an enzyme that synthesizes new strands of DNA during replication.

Glucagon is a hormone produced by the pancreas that raises blood sugar levels by promoting the conversion of glycogen to glucose in the liver.

Hemoglobin is a protein that functions to transport oxygen from the lungs to tissues throughout the body.

Lysosomes contain digestive enzymes that break down macromolecules, old cell parts, and microorganisms.

Mitochondria are known as the powerhouses of the cell, generating ATP through cellular respiration.

mRNA (messenger RNA) carries the genetic code from DNA to the ribosome, where proteins are synthesized.

NADP+ acts as an electron carrier, becoming NADPH during the light-dependent reactions.

The function of nervous tissue is the transmission of impulses.

Oxytocin is a hormone that stimulates uterine contractions during childbirth and is also involved in social bonding.

Parathyroid hormone (PTH) increases calcium levels in the blood by stimulating the release of calcium from bones and increasing calcium absorption in the intestines.

Parathyroid hormone increases calcium levels in the blood by promoting the release of calcium from bones and increasing absorption in the intestines.

Petals serve to attract pollinators with their color and scent.

Phloem is responsible for the transport of food, particularly the sugars produced during photosynthesis, from the leaves to other parts of the plant.

Phosphorus is crucial for energy transfer in plants, particularly in the form of ATP (adenosine triphosphate).

Plasma is the liquid component of blood that transports nutrients, hormones, and waste products.

Platelets are essential for blood clotting, helping to prevent excessive bleeding.

Ribosomes are the cellular structures responsible for protein synthesis.

Ribosomes are the sites of protein synthesis, translating messenger RNA into polypeptide chains.

Ribosomes are the cellular structures responsible for protein synthesis.

Sclerenchyma tissue provides support and protection to the plant due to its thick, lignified cell walls.

Stomata are small openings on leaves that facilitate gas exchange, allowing CO2 in and O2 out.

The autonomic nervous system regulates involuntary bodily functions such as heart rate and digestion.

The blood-brain barrier protects the brain from harmful substances while allowing essential nutrients to pass through.

The cell membrane regulates the transport of substances in and out of the cell.

Cilia in the respiratory tract help to clear debris and pathogens by moving mucus upwards towards the throat.

'Although' shows contrast between the two clauses.

The corpus luteum primarily produces progesterone, which is essential for maintaining the uterine lining during early pregnancy.