An early biological theory stated that a change in a population can occur when organisms with favorable variations for a particular environment

Which of the following is an example of passive transport? A) Diffusion B) Active transport C) moving molecules from low to high concentration

What is the correct path of blood through the heart

Which of the following is true about epithelia? Which of the following is true about epithelia? Pseudostratified epithelia are commonly keratinized. Stratified epithelia are associated with filtration.

The B vitamins act as parts of: a. anticoagulants b. coenzymes c. antibodies d. the bone matrix e. intrinsic factors

Most female frogs lays their eggs in water. Male frogs release their sperm into the water to fertalize the eggs this is an example of?

Some abnormal gene disorders are: a. Duchenne muscular dystrophy and fragile X syndrome b. cystic fibrosis and sickle-cell anemia c. PKU and autism d. meningitis and sickle-cell anemia

In food molecules the energy is stored in the

Fungi tend to reproduce sexually when nutrients are limited or other conditions are unfavorable, but they reproduce asexually in more ideal conditions. Why is this strategy successful?

How are proteins transported out of the endoplasmic reticulum to the Golgi apparatus

When did eukaryotes first appear on Earth?