Which blood vessel brings oxygen poor blood to the heart from the rest of the body?

a woman is bit by a rattlesnake, and in order to remove the venom, she tries to suck it out. assuming she has, she does not seek medical attention. she dies shortly after. why did her method not work?

Which will increase the rate of a chemical reaction? adding a positive catalyst decreasing the pressure decreasing the temperature adding a negative catalyst

Characteristics of plant cells include which of the following? Select all that apply. no cell wall, only plasma membrane large hypertonic vacuole no chlorophyll or chloroplasts cell plate in cell division cleavage furrow

If the horse (Equus caballus) has 32 pairs of chromosomes, and the donkey (Equus asinus) has 31 pairs of chromosomes, then 63 chromosomes would be expected in the somatic tissue of a mule (progeny of a cross between a horse and donkey). A. TrueB.

Molecular clocks A. take advantage of the fact that only neutral mutations do not happen at a steady rate. B. take advantage of the fact that all mutations affect the fitness of an organism. C.

How is a human sperm cell different from most other cells (i. e. simple squamous cell, a red blood cell and a smooth muscle cell) ?

In which organelle does photosynthesis take place? stoma vascular bundle mitochondrion chloroplast

What challenges do scientists face when classifying a new fossil?

Selesct all the characteristics that apply to bacteria

What are some of the challenges for forensic scientists in dealing with fiber evidence?