Biology problems
- 1. Cells with similar markers stick together and function as
Options- A. Organs
- B. Tissues
- C. Systems
- D. Organisms Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: Tissues
Explanation:
A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function.
Hence, Cells with similar markers stick together and function as tissues.
- 2. Example of a single celled organism
Options- A. Algae
- B. Amaeba
- C. Paramaecium
- D. All of the above Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: All of the above
Explanation:
Single selled organisms are also known as Unicellular organisms in which they have only one cell.
Examples are :: Fungi, Algae, Amaeba, Paramaecium,...
Hence, all the above given options are single selled organisms.
- 3. The process of copying dna is called
Options- A. Copying
- B. Replication
- C. Repulsion
- D. Replying Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: Replication
Explanation:
The process of copying dna is called Replication.
- 4. Drugs that combat depression work by Also asked in: Analyst, Bank Clerk, Bank PO
Correct Answer: Antidepressants work by stopping the breakdown of norepinephrine, dopamine, and serotonin They're more difficult for people to take than most other antidepressants because they interact with prescription drugs, nonprescription drugs, and some foods
- 5. Where does digestion of protein begin?
Options- A. Mouth
- B. Pharynx
- C. Stomach
- D. Liver Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: Stomach
Explanation:
Three main enzymes, pepsin secreted by the stomach and trypsin and chymotrypsin secreted by the pancreas, break down food proteins into polypeptides that are then broken down by various exopeptidases and dipeptidases into amino acids.
Hence, digestion of protein begin in stomach.
- 6. Select the correct statement about the ureters.
Options- A. The ureter is innervated by parasympathetic nerve endings only.
- B. Ureters contain sphincters at the entrance to the bladder to prevent the backflow of urine.
- C. The epithelium is stratified squamous like the skin, which allows a great deal of stretch.
- D. The ureters are capable of peristalsis like that of the gastrointestinal tract. Also asked in: AIEEE, Analyst
Correct Answer: The ureters are capable of peristalsis like that of the gastrointestinal tract.
- 7. The two purines in DNA are
Options- A. Adenine & Thymine
- B. Thymine & Uracil
- C. Guanine & Uracil
- D. Adenine & Guanine Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: Adenine & Guanine
Explanation:
The purines are bases in the DNA. The two purines in DNA are Adenine and Guanine. These two purines forms hydrogen bonds with their complimentary pyrimidines such as Thymine and Cytosine to keep the two rails of the DNA molecule together.
- 8. Which of the following is true of osmosis?
Options- A. it is a type of diffusion
- B. movement is against water's concentration gradient
- C. requires energy
- D. All of the above Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: All of the above
- 9. Where are the proteins of the electron transport chain located?
Options- A. mitochondrial matrix
- B. mitochondrial inner membrane
- C. mitochondrial outer membrane
- D. mitochondrial intermembrane space Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: mitochondrial inner membrane
Explanation:
The proteins of the electron transport chain are present in mitochondrial inner membrane in Eukaryotes.
- 10. The functional unit of the nervous system is the
Options- A. Nephrons
- B. Axons
- C. Neurons
- D. All of the above Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: Neurons
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