BIOLOGY HIGH SCHOOL

Which two atoms form an ionic bond?A. Two sodium atoms
B. Two oxygen atoms
C. Sodium and bromine
D. Fluorine and chlorine

Answers

Answer 1
Answer:

Answer:

Sodium and bromine

Explanation:

Ionic bond is a type of chemical bond and binds the chemical molecules together.  Ionic bond is formed by the transfer of electrons from an electropositive element ( metal) to the electronegative element (non metal).

Sodium is an electropositive element and contains one positive charge. Bromine is an electronegative element with a single negative charge over it. Sodium gives the electron to bromine and results in the formation of ionic bond.

Thus, the correct answer is option (C).
Answer 2
Answer: Sodium and bromine would form an ionic bond. The one valence electron from sodium would be transferred to the bromine atom in order to obtain octet for both.

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A fungus, like a mushroom, and a mammal, like a kangaroo, are alike because both area. heterotrophic.
b. prokaryotic.
c. unicellular.
d. motile.

Answers

i think its "A" hope im right :)
Because both are hetrotrophic

multicellular organisms have many cells. what is the one other characteristic they must have before they can be called multicellular? a. the cells must be small. b. they must be autotrophs. c. they must be heterotrophs. d. the cells must be specialized.

Answers

Answer:

The answer is D. the cells must be specialized.

Explanation:

A multicellular organism is one that is constituted by two or more cells which arise from a single cell which multiplies generating an organism. The cells of multicellular organisms aredifferentiated to perform specialized functions and reproduce by mitosis and meiosis.Cellular specialization includes the division of biochemical functions, the specialization of cells for contact with the environment and the separation between somatic cell and germ cell.
D. the cells must be speacialised

List by size: gene, cell, chromosome, atom, nucleus, base subunit, nucleotide

Answers

In order from smallest to largest :

Atom, base subunit, nucleotide, gene, chromosome, nucleus, cell.

What is cell?

A cell is the structural and basic unit of life. The study of cells from their basic structure to the functions of each cell organelle is called cell biology. Robert Hooke was the first biologist who discovered cells.

All organisms are made up of cells. They can consist of one cell (unicellular) or many cells (multicellular). Mycoplasmas are the smallest known cells. Cells are the building blocks of all living things. They give structure to the body and transform nutrients  from  food into energy.

Cells are complex and their components perform different functions in the body. They come in different shapes and sizes,  like the bricks of  buildings. Our body is made up of cells of different shapes and sizes.

To learn more about cell, refer;

brainly.com/question/12129097

#SPJ2
cell nucleus chromosome gene nucleotide base subunit atom

A student is examining leaf cells. Which organelle is most likely to be missing from the cells?

Answers

The organelle which is most likely to be missing from leaf cells is Lysosomes.

Lysosomes are an important organelle for eukaryotic animal cells as they contain the digestive enzymes. The macromolecules or foreign matter which are harmful for the cells enter the animal cells easily but not the plant cells as the plant cells contain cell walls.  Phagocytosis or digestion of macromolecules is not much needed in plant cells so a lysosome can be missing from the leaf cell.
A cell is the most basic form oflife. It is what most of the organisms are made off. For the organism tofunction, the cell must also function. It has organelles too that helpsfunctions what the microorganisms need. A leaf cell contains chloroplasts thatanimal cells and other cells do not have.  The chloroplast is where the photosynthesishappens. It needs sunlight for the process of photosynthesis. Notice that theleaf has a broader surface area to enable them to be exposed to the sun.

What functions do water have in our bodies?

Answers

Water helps your body maintain your body functions and regulates the temperature of your body  and you lose water by doing activities by running, sweating and digesting its important to high drat all the time. Its important and re hydrate and eat food that have water in them like apples is an example. 

* brain* central nervous system
* human being
* nerve tissue
* neurons
Organize the parts of this body system in the CORRECT order according to the levels of organization in a multicellular organism, simplest to most complex..
A) human being - central nervous system - brain - nerve tissue - neurons
B) brain - neurons - nerve tissue - central nervous system - human being
C) neurons - nerve tissue - brain - central nervous system - human being
D) nerve tissue - neurons - brain - central nervous system - human being

Answers

C
Neurons and other components come together to form nerve tissue
The brain is formed of many different parts and types of tissues
The central nervous system runs through the body and consists of many parts
A human being has many different systems

Neurons-nerve tissue-brain-central nervous system-human being (C) is the CORRECT order according to the levels of organization in a multicellular organism (simplest to most complex).

Further Explanation:

The levels of organization are the hierarchy that is used to classify the organism according to the complexity in the organization. The cellular level is the lowest level of organization followed by tissue, organ, organ system, and organism.

The cellular level is the most simple level of organization with increasing complexity to the most complex level being the organization level. The neurons are the highly specialized cells that are responsible for the production and communication of neural signals from a part of the body to another. The axon is the tube like structure that is responsible for the passing of the impulse from one neuron to the other. A group of neurons together performing a specific function can be termed as a nerve tissue. A nerve tissue is typically found in the central as well as peripheral nervous system. The central nervous system comprises of the brain and the spinal cord. The nerves that arise from the brain are known as the cranial nerves and the ones that arise from the spinal cord are known as the spinal nerves. These systems insures the proper functioning of the body. All the information is gathered and the reflex action is initiated and processed simultaneously.  

Thus, neurons-nerve tissue-brain-central nervous system-human being is the order according to the levels of organization in a multicellular organism.

Learn more:

    • Learn more about naturally occurring solid mixture and organic   matter of the brain: brainly.com/question/2817889

    • Learn more about human sperm cells and egg cells are: brainly.com/question/1626319

    • Learn more about which part of the brain when impaired by alcohol affects memory: brainly.com/question/2034996

Answer Details:

Grade: Middle School

Subject: Biology

Chapter: Levels of Organization

Keywords:  

Organization, hierarchy, complexity, cellular level, organization level, tissue level, neurons, nerve tissue, axons, central nervous system, reflex action, spinal cord, multicellular organisms.
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