Biology

the role of the liver is that it clears toxins from the body

Is produces bile.

It sends messages that control all the systems in the body.

The nervous system controls almost every action in the human body. It controls the heart beat, your adrenaline levels, and many other things which can effect an organism.

The thyroid gland releases hormones that affect the metabolism of the body and calcium deposition in bones.
Controls the bodys metabolism
Your thyroid is a butterfly-shaped gland in the lower, front part of your neck. It controls your metabolism and keeps your whole body functioning properly.

viruses are not alive. APEX

Nutrients are absorbed into the bloodstream. Starch is broken down by enzymes.

Macromolecules are broken down.

The tissue formed once mitosis of an OVUM

A few days after fertilization. apex:)

The circulatory system is its own system. There are not systems in the circulatory system.

Both the digestive system and the respiratory system interacts with the excretory system. Whatever leaves the digestive system, eventually becomes waste. That waste is sent to the excretory system. Waste is formed in the respiration process. It is then released into the red blood cells and transported back to the lungs for the elimination process to occur.

There must be genetic variation in the population

The system must not be in hardy-weinberg equilibrium.

resources must be limited in the ecosystem

Mutations in sex cells can be passed on to children.

Mutations in sex cells only affect offspring.

Mutations in sex cells do not affect the organism.

Small intestine

Esophagus - APEX

The parts of the alimentary canal are:

The Mouth

The Pharynx

The Stomach

The small intestine

The large intestine

HIV attacks helper T cells that are trying to fight infection, rather than attacking healthy body cells like a cold virus does.

HIV attacks lymphocytes directly.

The endocrine system sends messages using hormones. It delivers messages from the nervous system to the excretory system. It tells the excretory system when the blood is out of balance.

Depends on when you consider it a child. First it's a Zygote, a fertilized egg, and then a blastocyst. Medically it's not a child until it's born. But if we start with embryo you can read all about it in the link below. Someone wrote blood starts pumping and arms starts to develop but that is weeks later.

Blood pumps through the body.

or

Rhythmic breathing movements

Gene Flow ~

eyes develop

lips start to form

Vocal cords develop.

In vitro (in glass)

If it is the fatter bone in the leg, then it is the tibia

If your options are

Latissimus doris

Rectus abdominus

Biceps brachii

Obliques

Then the correct answer is Rectus abdominus

The circulatory and respiratory systems must work on their own.