This is one of the two main types of white blood cells that is an essential parts of the immune system and directly attacks antigens. it is produced in bone marrow, matures in the thymus, and travels in the blood to other tissues, such as the spleen, tonsils, and lymph nodes.

If you are in a chronic state of anxiety but also suffer from moment of sudden, intense fear you are problably suffering. from

Agroup of plant cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. if the mitochondria were unharmed, what would happen to the overall function of the plant cells? a. the cells would not be able to make food, but would be able to release energy from biomolecules. b. the cells would not be able to replicate dna, but would be able to break down waste. c. the cells would not be able to break down waste, but would be able to replicate dna. d. the cells would not be able to release energy from biomolecules, but would be able to make food.

Which is an example of a vestigial structure? a. tail of a monkey b. fin of a fish c. flower of a plant d. tailbone of a human