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3 years ago

In one paragraph explain how plants get their food and what plants use food for.

Biology

1 answer:

Anna007 [38]3 years ago

4 0

Answer:

Photosynthesis is defined as the process in which the chlorophyll-containing plant

cells synthesise food in the form of carbohydrates, using carbon dioxide and water

in the presence of solar energy.

Sources of raw materials required for photosynthesis:

(a) Water is taken in from the roots of the plant and is transported to the leaves.

(b) Carbon dioxide from the air enters the leaves through the tiny pores called

stomata .

used to synthesise (prepare) food from carbon dioxide and water.

Thus, photosynthesis can be represented by the following equation.

Explanation:

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At first glance, fermentation of pyruvate to lactate appears to be an optional add-on reaction to glycolysis. After all, could c

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3 years ago

Match the cell adhesion or junction with the appropriate choice. Drag the terms on the left to the appropriate blanks on the rig

pav-90 [236]

Answer:

The missing options are:

A) protein subunits associated with gap junctions.

B) a type of adhesive junction connecting an epithelial cell to the basal lamina.

C) collection of fibrous intracellular attachment proteins.

D) create a permeability barrier.

E) button-like points of strong adhesion between two cells.

F) hollow cylinders associated with gap junctions.

G) type of adherens junction connecting cells with the extracellular matrix.

H) intermediate filaments associated with plaques.

I) collection of adherens junctions particularly associated with epithelial cells.

J) type of adhesive junction containing actin microfilaments.

K) specialized modifications of the cell membrane in which two cells come together in multicellular organisms.

L) point of cytoplasmic contact between two cells.

M) anchors cytoskeleton of one cell with that of a neighboring cell.

Set of answers are:

A) protein subunits associated with gap junctions. Conexin

B) a type of adhesive junction connecting an epithelial cell to the basal lamina. Hemidesmosome

C) collection of fibrous intracellular attachment proteins. Plaque

D) create a permeability barrier. Tight junctions

E) button-like points of strong adhesion between two cells. Desmosome

F) hollow cylinders associated with gap junctions. Connexons

G) type of adherens junction connecting cells with the extracellular matrix. focal adhesion

H) intermediate filaments associated with plaques. Tonofilaments

I) collection of adherens junctions particularly associated with epithelial cells.

J) type of adhesive junction containing actin microfilaments. Adherens junctions

K) specialized modifications of the cell membrane in which two cells come together in multicellular organisms. Cell junctions

L) point of cytoplasmic contact between two cells. Gap junction

M) anchors cytoskeleton of one cell with that of a neighboring cell. Adhesive junction

Explanation:

Connexin: is a transmembrane protein that forms the gap junctions, they are also called gap junctions proteins.

Hemidesmosome junctions: these types of junctions are in the epidermis, specifically between the epithelial cells and the basal lamina of the epidermis.

Plaque: they are part of the adherens junctions, they are fibrous proteins that are attached to certain points of the extracellular matrix.

Tight junctions: are junctions between two epithelia, they are very restrictive and do not allow the passage of soluble molecules creating a permeability barrier.

Desmosomes: are very strong cell to cell junctions on the lateral sides of plasma membranes. They are in tissues that are under mechanical stress, such as the cardiac muscle.

Connexons: is a pore made of six connexin proteins in a gap junction. Connexons are the ones that connect two cells in gap junctions.

Focal adhesions: They connect the extracellular matrix with the cell, regulatory signs and mechanical force is transmitted through them.

Tonofilaments: tonofilaments are the ones that are associated with a plaque in adherens junctions, they are in epithelial tissues.

Adherens junctions: are cell to cell junctions where the cytoplasmatic face is connected to the actin cytoskeleton. They appear as spots forming the plaque or as zonula adherens, which are actin bands around the cell.

Cell junctions are protein complexes that connect two cells that are next to each other or a cell with the extracellular matrix. They have a lot of functions, such as pas information from cell to cell, or the exterior, form a barrier, synchronize cells, etc.

Gap junctions: are connections between the cytoplasm of two cells, molecules and, ions pass directly from one cell to the other.

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3 years ago