Answer:
Functions of the bones in the human body:
Support, protection, movement, mineral homeostasis
Explanation:
- Support: the bones provide a rigid support frame for muscles and soft tissues.
- Protection: the bones form several cavities that protect the internal organs from possible trauma. For example, the skull protects the brain against blows, and the rib cage, formed by ribs and sternum protects the lungs and heart.
- Movement: thanks to the muscles that are inserted into the bones through the tendons and their synchronized contraction, movement occurs.
- Mineral homeostasis: the bone tissue stores a series of minerals, especially calcium and phosphorus, necessary for muscle contraction and many other functions. When necessary, the bone releases these minerals in the blood that distributes them to other parts of the body.
The second law of thermodynamics is a statement of the law of conservation of energy say that heat cannot be completely converted into mechanical energy
Answer:
Potassium = Great conductor of heat and electricity
Neon = Non reactive
Boron = has properties of both metals and non metals
Barium = Malleable and highly reactive
Explanation:
Potassium = Great conductor of heat and electricity
Potassium is soft metal and has low melting point. It is white silvery luster with great heat conducting properties.
Neon = Non reactive
Neon is present in group eighteen. It is noble gas. Its outer electronic shell is completely filled that's why it is non reactive.
Boron = has properties of both metals and non metals
Boron is metalloid and behave like both metals and non metals.
Barium = Malleable and highly reactive
Barium is belong to group 2A. It is alkaline earth metal. It is highly reactive towards other elements such as oxygen, fluorine, chlorine , etc.
Answer:
The answers are explained below:
- Black rough fur -
. - Black smooth fur - .
- White rough fur -
. - white smooth fur -
Explanation:
- The genotype of homozygous black fur and smooth texture: BBrr.
- The gametes produced are : Br
- The genotype of white and heterozygous for rough texture: bbRr
- The gametes produced are : bR and br.
- The cross,
bR br
Br BbRr Bbrr
(B/R) (B/S)
- B - Black.
- R - Rough.
- S -Smooth.
- The cross can develop two types of offspring, that is,
- Black and Rough (BbRr) - 1.
- Black and smooth (Bbrr)- 1.
- Black rough fur - .
- Black smooth fur - .
- White rough fur - .
- white smooth fur -
two strands of DNA are held together by weak hydrogen bonds.
