Question

1. how is the function of nucleic acids connected to the building of proteins?
2. what are the functions of:

a. nucleus
b. mitochondria
c. golgi bodies
d. chloroplast
e. plasma membrane

1. what is a concentration gradient?
2. what is diffusion?
3. what is facilitated diffusion?
4. what is osmosis?
5. what is active transport?
6. what are endocytosis and exocytosis?

Explanation:

1. Nucleic acids (DNA and RNA) carry genetic information. DNA is transcribed into mRNA, which is then translated into proteins at ribosomes. The sequence of nucleotides in nucleic acids determines the sequence of amino - acids in proteins.

9.a. The nucleus stores genetic material (DNA) and coordinates cell activities such as growth, metabolism, and reproduction.
9.b. Mitochondria are the power - houses of the cell, generating ATP through cellular respiration.
9.c. Golgi bodies modify, sort, and package proteins and lipids for secretion or use within the cell.
9.d. Chloroplasts are the sites of photosynthesis in plant cells, converting light energy into chemical energy.
9.e. The plasma membrane regulates the movement of substances in and out of the cell, provides structural support, and is involved in cell - cell communication.

1. A concentration gradient is the difference in the concentration of a substance between two areas, which can drive the movement of substances.
2. Diffusion is the passive movement of substances from an area of high concentration to an area of low concentration.
3. Facilitated diffusion is the passive transport of substances across a membrane with the help of transport proteins (carrier or channel proteins).
4. Osmosis is the diffusion of water across a semi - permeable membrane from an area of low solute concentration to an area of high solute concentration.
5. Active transport is the movement of substances across a membrane against their concentration gradient, requiring energy (usually ATP).
6. Endocytosis is the process by which a cell takes in substances by engulfing them in a vesicle formed from the plasma membrane. Exocytosis is the opposite process, where a cell releases substances by fusing a vesicle with the plasma membrane.

Answer:

1. Nucleic acids carry genetic info for protein - building via transcription and translation.

9.a. Stores DNA, coordinates cell activities.
9.b. Generates ATP.
9.c. Modifies, sorts, and packages proteins/lipids.
9.d. Site of photosynthesis in plants.
9.e. Regulates substance movement, provides support, and aids in communication.

1. Difference in substance concentration between two areas.
2. Passive movement from high to low concentration.
3. Passive transport with help of transport proteins.
4. Diffusion of water across a semi - permeable membrane.
5. Movement against concentration gradient, requiring energy.
6. Endocytosis: cell takes in substances by vesicle formation. Exocytosis: cell releases substances by vesicle - membrane fusion.