Question

organelles carry out specific processes involving chemical reactions. in the chart below, identify two organelles and, for each, identify a process involving chemical reactions that occurs there. describe one specific way each process identified is important to the functioning of the organism.

1. in a multicellular organism, organs carry out a variety of life functions. in a single - celled organism, these functions are performed by a) tissues b) organelles c) organ systems d) organs
2. the letters in the diagram below indicate some parts of a cell.

the function of which cell part is most similar to that of the human excretory system? a) a b) b c) c d) d

1. what organelle releases energy for metabolic activity in cells? a) chloroplast b) ribosome c) mitochondrion d) vacuole
2. which cell structure contains information needed for protein synthesis? a) 1 b) 2 c) 3 d) 4
3. which organelle is correctly paired with its specific function? a) cell membrane—storage of hereditary information b) chloroplast—transport of materials c) ribosome—synthesis of proteins d) vacuole—production of atp
4. hereditary information is stored inside the a) ribosomes, which have chromosomes that contain many genes b) ribosomes, which have genes that contain many chromosomes c) nucleus, which has chromosomes that contain many genes d) nucleus, which has genes that contain many chromosomes

Explanation:

1. In single - celled organisms, organelles perform life functions. Tissues, organ systems, and organs are relevant to multicellular organisms.
2. The excretory system removes waste. In a cell, the cell membrane (D) controls the movement of substances in and out, including waste removal.
3. Mitochondria are the power - houses of the cell, releasing energy for metabolic activity through cellular respiration.
4. The nucleus contains DNA which has information for protein synthesis. But if we assume the numbered parts are typical cell structures, the nucleus is usually the control center with genetic info for protein synthesis.
5. Ribosomes are the sites of protein synthesis. The cell membrane is for regulating transport, chloroplasts are for photosynthesis, and vacuoles are for storage.
6. Hereditary information is stored in the nucleus which has chromosomes that contain many genes.

Answer:

1. B. organelles
2. D
3. C. mitochondrion
4. (Assuming the nucleus is one of the numbered parts) The part corresponding to the nucleus
5. C. ribosome—synthesis of proteins
6. C. nucleus, which has chromosomes that contain many genes