Which type of blood vessel usually carries oxygen-poor blood?

When traits inherited from both parents are expressed, the alleles are said to have A. homozygous recessive alleles. B. polygenic inheritance. C. incomplete dominance. D. mutations.

What is the first and longest stage of mitosis

The law of original horizontality states that

To a taxonomist a plant is the sum total of all its characteristics

Which of the following is true of annelids? a) They have a gastrovascular cavity. b) They have an open circulatory system. c) They have a nerve net. d) They have pseudocoeloms. e) They perform gas exchange across their skin.

Which systems of the human body function together to remove cellular waste from the body? 1) Immune system 2) Integumentary system 3) Digestive system 4) Respiratory system 5) Urinary system

Which geologic era lasted the longest? A. Cenozoic B. Mesozoic C. Paleozoic D. Precambrian

What is the relationship between a chromosome and DNA chromosomes are made of DNA chromosomes manufacture DNA DNA manufactures chromosomes

Naerobic respiration produces much more ATP than aerobic respiration. True False

What are the different ways living organisms covert energy?