Answer: option A - Nucleus
Explanation:
The Nucleus is a membrane-bound organelle. It has nuclear membrane, which consists of nuclear pores (made up of proteins) through which substances enter or leave the cell (RNA, proteins, etc)
The basic functions which are important for the survival of an organism include processes such as homeostasis, nutrient absorption and distribution in body, reproduction, and defense against injury or pathogens.
There are usually nine organ systems present in an animal which includes skeletal, muscular, nervous, endocrine (hormonal), digestive, respiratory, circulatory, excretory (urinary), and reproductive system. Each of these systems perform a specific function.
The Skeletal system provides the body structure and is responsible for the movements of different body parts. The muscular system is made up of all the muscles which are present in the body, these help in connecting different body parts to the skeletal system. The nervous system consist of the brain and the spinal cord, this system is responsible for coordinating different functions in the body.
The endocrine system is responsible for secreting hormones which are responsible for the growth and development of body. The digestive system helps in absorbing the energy present in the food and distributing the energy. The circulatory system is responsible for the circulation of gases and different molecules across the body through blood vessels.
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Answer:
The heart pumps blood through the circulatory system, delivering needed materials (glucose, oxygen) and picking up waste (carbon dioxide) from cells all over the body. Organs systems work together to efficiently and effectively provide all body cells with their basic needs to carry out life functions.
Answer:
It a bad thing that is happing now and people need a way to stop it or the world will die
Explanation:
Answer:
At the 5ʹ end and a free hydroxyl group at the 3ʹ end.
Explanation:
B. desmosomes
C. peroxisomes
D. extracellular matrix
E. gap junctions
Answer:
E
Explanation:
Gap junctions in animals, like plasmodesmata in plants, connect the cytoplasm of two cells through dedicated and regulated channels. A gap junction is made of two hemichannels connected together leaving a channel that is 2-4 nm across -tranversing the two cells' cell membranes. The gap junctions allow for the cells to signal each other through allowing exchange of ions and other moelcules. One significance of gap junction is in enhancing communication between cells in the development of tissues and embryo.
Plasmodesmata in plant cells are most similar in function to gap junctions in animal cells.
Plasmodesmata are channels that connect plant cells and allow for the exchange of various materials, including nutrients and signaling molecules. They are most similar in function to gap junctions in animal cells. Gap junctions are specialized channels that connect neighboring animal cells, allowing for the direct transfer of small molecules and ions.
Like plasmodesmata, gap junctions play a crucial role in cell-cell communication and coordination within tissues. They facilitate the rapid passage of substances, such as ions and small metabolites, between adjacent cells, allowing for coordinated responses and sharing of resources.
Therefore, the answer to this question is E. gap junctions.
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