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- Question
What sugar is found in DNA?
Options- A. Ribose
- B. Deoxyribose
- C. Pentose
- D. Sucrose
- Correct Answer
- Deoxyribose
ExplanationDNA - Deoxyribonucleic acid is a type of nucleic acid. The sugar contained in it is called Deoxyribose.
- 1. Which structure is common to plant and animal cells?
Options- A. Centriole
- B. Chloroplast
- C. Central Vacuole
- D. Mitochondria Discuss
- 2. Select the correct statement about the pharynx.
Options- A. The auditory tube drains into the nasopharynx
- B. The laryngopharynx blends posteriorly into the nasopharynx
- C. The palatine tonsils are embedded in the lateral walls of the nasopharynx
- D. The pharyngeal tonsil is located in the laryngopharynx Discuss
- 3. Where are Enzymes found?
Options- A. food
- B. human body
- C. medicines
- D. none Discuss
- 4. What carries Blood away from the Heart?
Options- A. Arteries
- B. Veins
- C. Both A & B
- D. None Discuss
- 5. Study of inter relationship between living organism and their environment is called _______
Options- A. Plant Geography
- B. Plant social science
- C. Ecology
- D. Ecosystem Discuss
- 6. Nitrogenous Food is
Options- A. Proteins
- B. Carbohydrates
- C. Salts
- D. Lipids Discuss
- 7. What are the three main parts of a Eukaryotic cell? Discuss
- 8. Which of the following does not influence haemoglobin saturation?
Options- A. Nitric oxide
- B. Carbon dioxide
- C. Temperature
- D. DPG Discuss
- 9. Myeloid stem cells give rise to all leukocytes.
Options- A. TRUE
- B. FALSE Discuss
- 10. When is genetic drift a major factor in evolution?
Options- A. When there is male competition
- B. When there is artificial selection
- C. When there is no selective pressure
- D. When there is disruptiveselection Discuss
Biology problems
Search Results
Correct Answer: Mitochondria
Explanation:
Mitochondria are present in both plant and animal cells.
Correct Answer: The auditory tube drains into the nasopharynx
Correct Answer: human body
Explanation:
Enzymes play an essential role in each living cell of our body. Enzymes are globular proteins that control biological reactions. These are of two types.
1. Intracellular enzymes
2. Extracellular enzymes
Intracellular enzymes are found inside the cell.
Extracellular enzymes act outside the cell.
Enzymes are produced by exocrine glands.
Digestive enzymes of diverse specificities are secreted by the salivary glands, stomach, pancreas, and the small intestine.
Correct Answer: Arteries
Explanation:
We know that the circulatory system of our body is a loop. The Heart is the pump, the arteries and their smaller branches (arterioles) carry oxygen rich blood all through your body tissues from the heart and the veins and their smaller branches (venules) carry oxygen depleted blood and waste products back to the heart from all the body parts.
Correct Answer: Ecology
Correct Answer: Proteins
Explanation:
Here the Nitrogenous Food is Proteins.
Nitrogenous Food ::
The animal body is more than a machine. It requires fuel to enable it not only to work but also to live, even without working. A part of the food eaten must go to maintain the body
Nitrogenous food compounds are sometimes classed together under the name of proteins. These may be divided into proteids, gelatinoids, and extractives.
Correct Answer: Eukaryotic cells are found in plants, animals and unicellular organisms The three main part of Eukaryotic cells are 1 Plasma membrane or membrane-bound organelles which carries out the cell functions 2 Nucleus which contains the cell's DNA (and) 3 Cytoplasm which is a jelly like fluid interior of the cell
Correct Answer: Nitric oxide
Correct Answer: FALSE
Explanation:
Hemopoiesis begins in the red bone marrow, with hemopoietic stem cells that differentiate into myeloid and lymphoid lineages.
Myeloid stem cells give rise to all the other formed elements, including the erythrocytes; megakaryocytes that produce platelets; and a myeloblast lineage that gives rise to monocytes and three forms of granular leukocytes: neutrophils, eosinophils, and basophils.
Correct Answer: When there is no selective pressure
Explanation:
Genetic drift or allelic drift is the change in the relative frequency in which a gene variant (allele) occurs in a population due to random sampling and chance.
When is genetic drift a major factor in evolution is
* When there is low gene flow.
* When there is no selective pressure.
* When there is a bottleneck.
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