Explanation

The longest bone is the Femur (thigh bone) and the shortest one is the Stapes (one of the 3 small bones inside the ear).

The largest and broadest is the hip bone or pelvis.

The lowest part of the backbone called the sacrum

The smallest bone is the stirrup (stapes) 

The strongest bone for its size is the lower jaw or mandible.

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Explanation

The cell is the smallest unit of life.

Cells are called ‘structural’ and ‘functional’ units for a reason.

Cells are made of molecules which are in turn made up of atoms.

“Cell is the unit of LIFE” is that a cell is the smallest living entity in a living system.

Explanation

Instead of nostrils, insects breathe through openings in the thorax and abdomen called spiracles.

Insects that are diapausing or non-mobile have low metabolic rates and need to take in less oxygen.

Insects exchange oxygen and carbon dioxide through spiracles (noted by circle)

Explanation

lactose, often called milk sugar,

It is a disaccharide found in the milk of many mammals, including humman and cows.

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Explanation

Transpiration is ultimately the main driver of water movement in xylem, combined with the effects of capillary action.

The cohesion-tension model works like this: Transpiration (evaporation) occurs because stomata in the leaves are open to allow gas exchange for photosynthesis.

Explanation

Prokaryotic cells lack membrane-bound organelles.

They do not have structures like a nucleus, mitochondria, or endoplasmic reticulum.

They are characteristic of eukaryotic cells.

Explanation

The longest cell in animals is the nerve cell.

Nerve cells are also known as neurons and in the human body, they can be up to 3 feet long.

Explanation

Nephrons are structural and functional units of the kidney.

The nephron is the microscopic structural and functional unit of the kidney. It is composed of a renal corpuscle and a renal tubule. 

Explanation

The human body has 23 pairs of chromosomes, 22 of which are autosomes and 1 sex chromosome.

Explanation

A cephalopod is any member of the molluscan class Cephalopoda such as a squid, octopus, cuttlefish, or nautilus.

Class: Cephalopoda; Cuvier, 1797

Scientific name: Cephalopoda

Domain: Eukaryota

Kingdom: Animalia