Science, asked by shivamkumarrai04, 5 months ago

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Answered by jaat8860
3

Answer:

Q 1.

1. Paramecium

2. Granule cell

3. Nerve cell

4. Bacteria , Archaea

5. Mitochondria

Q 2.

1. A lysosome is a membrane-bound cell organelle that contains digestive enzymes. Lysosomes are involved with various cell processes. They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria.

2. A ribosome is a cell organelle. It functions as a micro-machine for making proteins. Ribosomes are composed of special proteins and nucleic acids. The TRANSLATION of information and the Linking of AMINO ACIDS are at the heart of the protein production process.

3. In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls allow plants to have rigid structures as varied as wood trunks and supple leaves; and vacuoles allow plant cells to change size.

Ans 3. A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. ... Animal cells simply have a cell membrane, but no cell wall.

Ans 4. The nucleus is a sphere-shaped organelle found in eukaryotic cells. It contains the genetic material of the cell in the form of nucleic acids. It is responsible for controlling all activities of the cell. and contains a nuclear membrane, chromosomes, nucleolus and nucleoplasm.

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Answered by Anonymous
19

(1)microorganisms called Paramecium (a group of protozoa, or single-celled organisms, which move with cilia, so they are called “ciliates”).

(2)The sperm is the smallest cell in human biology, but also one of the most complex.

(3)There are nerve cells, also known as neurons, present in our human body. They are branched out.

(4)All prokaryotes are unicellular and are classified into bacteria and archaea. Many eukaryotes are multicellular, but many are unicellular such as protozoa, unicellular algae, and unicellular fungi.

(5) mitochondria.

(6)A lysosome is a membrane-bound cell organelle that contains digestive enzymes. Lysosomes are involved with various cell processes. They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria.

(7)Ribosomes have two main functions — decoding the message and the formation of peptide bonds. These two activities reside in two large ribonucleoprotein particles (RNPs) of unequal size, the ribosomal subunits. Each subunit is made of one or more ribosomal RNAs (rRNAs) and many ribosomal proteins (r-proteins).

(8)Chloroplasts are plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process. By doing so, they sustain life on Earth. Chloroplasts also provide diverse metabolic activities for plant cells, including the synthesis of fatty acids, membrane lipids.

(9)A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. ... Animal cells simply have a cell membrane, but no cell wall.

(10)Outline the structure of the Nucleus.

A double-membraned organelle known as the nuclear membrane/envelope engirdles the nucleus.

The nucleolus is found within the nucleus, occupying 25% per cent of the volume.

The nucleolus is found within the nucleus, occupying 25% per cent of the volume.Thread-like, dense structures known as chromatins are found within the nucleus containing proteins and DNA.

The mechanical strength for the nucleus is provided by the nuclear matrix, a network of fibres and filaments which performs functions similar to the cytoskeleton.

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