Wolbachia pipentis is a species of bacteria that infect fruit flies. When the genome of the fruit fly was sequenced, it was found that most of the genome of the bacteria had been integrated into the fruit fly genome.

Describe what has happened between these two organisms.

A. This passing of genes between organisms of different species is caused by mutations. This type of gene transfer can increase genetic variation only, if it happens in the cells that produce eggs and sperm.

B. This passing of genes between organisms of different species is called gene recombination and happens during sexual reproduction. This type of gene transfer has no effect on genetic variation.

C. This passing of genes between organisms of different species is caused by gene duplications. This type of gene transfer can increase genetic variation, if the duplicated genes acquire new functions.

D. This passing of genes between organisms of different species is called lateral gene transfer. This type of gene transfer can increase genetic variation, and therefore diversity.

the form of energy changes and the total energy increases0l

question#1

ans:

cell is the basic unit of organization of all living things. cells are often called the building block of life and it is the smallest unit of life. the study of cell is called cell biology. cell consists of cytoplasm enclosed within membrane, which contain bio-molecules such as proteins and nucleic acid.

two third of cell is water, which means that two-third of your whole body is water. the rest is the mixture of molecules, mainly proteins, lipids and carbohydrates.

question#2

ans:

organ:

an organ is a group of tissues specialized to form a functional unit. an example is the heart in animals.

organ system:

an organ system is a group of several organs whose functions are synchronized to release an effective action in a living organism. an example is digestive system.

question#3

different systems perform different function at tissue level. for example, the respiratory system facilitates breathing. in the alveoli tissue of the lungs, the exchange of oxygen and carbon dioxide molecules between the air and the bloodstream occurs by passive transport, so that oxygen is taken in and carbon dioxide and water are removed. different systems of the body carry out different functions. for example, your digestive system is responsible for taking in and processing food, while your respiratory system working with your circulatory system is responsible for taking up oxygen and getting rid of carbon dioxide.

question#4

different systems perform different function at tissue level. for example, the respiratory system facilitates breathing. in the alveoli tissue of the lungs, the exchange of oxygen and carbon dioxide molecules between the air and the bloodstream occurs by passive transport, so that oxygen is taken in and carbon dioxide and water are removed. different systems of the body carry out different functions. for example, your digestive system is responsible for taking in and processing food, while your respiratory system—working with your circulatory system is responsible for taking up oxygen and getting rid of carbon dioxide.

question#5

our body works because of the interactions that happen between organs and organ systems.  

for example:  

the heart to regulate blood flow throughout the body. the blood carries oxygen and nutrients to the cells and carries carbon dioxide and waste away from the cells. body systems work together in maintaining a constant internal environment. when this balance is disrupted, the body systems may not function properly, and human health can suffer.   you start to feel bad.

the growth of the plants is affected by the heat of the light. what is the student doing?