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3 years ago

NEED HELP ASAP WILL GIVE BRIANLEST

Biology

2 answers:

Doss [256]3 years ago

7 0

1.) atom ; tissue
2.) cell
3.) organ system
4.) true
5.) atom
6.) Particle

^-^

-BARSIC- [3]3 years ago

5 0

Answer:

1. Atoms;tissue

2. Cell

3. Organ

4. True

5. Atom

6. Molecule

Explanation:

Biology which is the study of life has been divided into different levels of organization for the convenience to study. The levels or organization can be represented as follows:

Atoms - molecules - cell - Tissue - organ - organ system - Organism - population - community - ecosystem - biosphere.

Cell is the simplest functional unit of living organism. Different cells have different functions and each cell carry the genetic information i.e the DNA. Cells with similar structure and function come together to form tissues. Tissues like epithelial tissue, connective tissue, muscular tissue and nervous tissue. Specific tissues with specialized functions come together to form the organ. In humans there are various organs but all are under the control of brain. Group of organs working together form the organ system. For example digestive system is made of organs such as stomach, small intestine, large intestine, pancreas. All the organ systems together make the organism. Within organism the most complex level of organization is organ system.

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3 years ago

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2 years ago

This type of membrane transport moves substances against the concentration gradient from an area of low concentration to an area

sashaice [31]

Answer:- Active transport

Explanation:-

There are two types of membrane transports

1. Passive transport - this type of transport occurs without the input of any energy and the molecules move along the concentration gradients that is from high concetration to low concentration.

2. Active transport- this type of transport takes place to move the molecules against the concentration gradient that is from low concentration to high concentration.

The active transport is of two types:

1. Primary active transport- in this type of transport ATP is used as an energy source to move the substances against the concentration gradient.

2.Secondary active transport - in this type of transport the gradient formed by the active transport is utilized and it involves the movement of 2 substances at a time aross the membrane. That is the movement of one molecule is coupled to another.

The membrane proteins that are associated with active transport are called as carrier proteins. These proteins have a binding site for the molecules that they transport. Once they bind to the specific molecules, a conformation change is induced and this leads to the transport of the molecule across the membrane.

So, the active transport is basically responsible for utilizing the energy from ATP and carrier proteins to move the substances across the membrane against their concentration gradient i.e. from low concentration to high concentration.

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2 years ago