30) Prokaryotes are classified as belonging to two different domains. What are t

Question

30) Prokaryotes are classified as belonging to two different domains. What are the domains? 30) A) Bacteria and Archaca C) Bacteria and Eukarya B) Bacteria and Protista D) Archaea and Protista 31) Large numbers of ribosomes are present in cells that specialize in producing which of the following 31) A) nucleic acids B) lipids C) cellulose D) proteins 82) Which type of organelle or structure is primarily involved in the synthesis of oils, phospholipids, 32)_ and steroids? A) smooth endoplasmic reticulum C) lysosorme B) ribosome D) mitochondrion 33) Which of the following correctly describes the pathway taken by a protein destined for secretion 33) from an animal cell? A) rough ER transport vesicle-Golgi transport vesicle plasma membrane B) plasma membrane transport vesicle Golgi transport vesicle rough ER C) rough ER transport vesicle lysosome transport vesicle plasma membrane 34) lons can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell 34) through A) plasmodesmata. B) gap junctions C) tight junctions. 35) A prosein that spans the phospholipid bilayer one or more times is 35) A) a transmembrane protein C) a peripheral protein B) an extracellular matrix protein. D) a glycoprotein 36) Submerging a red blood cell in distilled water will result in 36) A) the cell becoming flacid. B) the ell would increase in size and lysis (bursting) would occur C) plasmolysis of the cell. 37) Transport of potassium ions into an animal cell by the sodium-potassium pump requires 37) A) low intracellular concentrations of potassium. B) high intracellular concentrations of sodium C) energy from ATP 38) The primary function of transcription factors is 38) A) to regulate gene expression. B) to regulate DNA synthesis C) to regulate the conversion of ATP into cAMP D) to transmit signals from an activated receptor to intracellular G proteins. 39) The cellular process of breaking down large molecules into smaller ones is defined as A) catalysis B) catabolism C) dehydration. D) metabolism.

Explanation / Answer

30- Bacteria are classified into archaea and prokaryotic

So the answer is option A.

31 - Ribosomes helps in a translation of protein from mRNA.

So the answer is Protein which is option D.

32 - Enzymes which are involved in the synthesis of oil, phospholipid and steroids are present in smooth endoplasmic reticulum.

So the answer is the option A- smooth endoplasmic reticulum.

33 - Proteins which are destined for secretion are synthesized in rough endoplasmic reticulum. From there they move into Golgi body. From Golgi body, they move to plasma membrane,

SO answer is an option - A.

34 - Connexin is the protein which is present in gap junction which helps in the movement of ions from one cell to another.

So answer is Gap junction which is option B.

35 - Peripheral protein are attached to the outer face of the plasma membrane.

Extracellular matrix protein and glycoprotein are also present at the outer side of the membrane.

The transmembrane protein is the protein which spans in the membrane.

So the answer is option A - Transmembrane protein

36- When RBC is placed in to distil water, water will move inside the cells as a result of increased water cell will burst.

So the answer is option B.

37 - Movement of potassium and sodium ion in inside the cell against its concentration gradient requires ATP

So the answer is option C- ATP

38- Transciotpipn factor regulates the gene transcription by binding to the DNA.

So the answer is option A.

39- Catabolism is a process where a bigger molecule is broken down into smaller molecules

So the answer is option B- Catabolism

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