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- Question
How many chromosomes are in a human gamete?
Options- A. 23
- B. 46
- C. 92
- D. 102
- Correct Answer
- 23
Explanation23 chromosomes are in a human gamete.
Human somatic cells have 46 chromosomes(23 pairs) but a gamete(germ cell) gets half the amount, i.e. 23 chromosomes, (one from each pair). There will be half the number of chromosomes an organism has in its somatic cells (all other body cells except gametes).
For example in humans, the somatic cells contain 46 chromosomes which are the diploid number (2n) and each sperm and egg has 23 chromosomes where one of them is the sex chromosome.
- 1. Why is DNA called the blueprint of life? Discuss
- 2. Do plant cells have Mitochondria?
Options- A. No
- B. Yes
- C. May be
- D. Can't be determined Discuss
- 3. Which event occurs during interphase?
Options- A. Centrioles appear
- B. Spindle fibers begin to form
- C. The cell grows
- D. Centromeres divide Discuss
- 4. How many Nephrons are in each kidney?
Options- A. 10,000
- B. 1,00,000
- C. 1,000,000
- D. 1000 Discuss
- 5. Unlike Mitosis, Meiosis results in the formation of
Options- A. 2N daughter cells
- B. Haploid cells
- C. body cells
- D. Diploid cells Discuss
- 6. Where are genes located in the cell? Discuss
- 7. Prokaryotic cells lack
Options- A. Membrane bound by organelles
- B. Nucleolus
- C. Nuclear membrane
- D. All the above Discuss
- 8. Select the correct statement about cellular respiration?
Options- A. All the carbon atoms in glucose ultimately incorporated during cellular respiration into carbon dioxide molecule
- B. All the carbon atoms in glucose ultimately incorporated during cellular respiration into NADH molecule
- C. All the carbon atoms in glucose ultimately incorporated during cellular respiration into ATP molecule
- D. All the carbon atoms in glucose ultimately incorporated during cellular respiration into water molecule Discuss
- 9. Which structure is not part of the Endomembrane System?
Options- A. Chloroplast
- B. Plasma membrane
- C. Nuclear envelope
- D. Golgi apparatus Discuss
- 10. Compared to land, the open oceans
Options- A. are rich in silica and iron
- B. are nutrient-poor environments
- C. contain unlimited nitrogen
- D. are nutrient-rich environments Discuss
Biology problems
Search Results
Correct Answer: DNA is called the blueprint of life because it contains the instructions needed for an organism to grow, develop, survive and reproduce DNA does this by controlling protein synthesis Proteins do most of the work in cells, and are the basic unit of structure and function in the cells of organisms
Correct Answer: Yes
Explanation:
While plant cells have chloroplasts to photosynthesize, they also require ATP for cellular functions, and do use oxygen to break down some of the sugar they produce in order to generate that ATP. Cellular respiration takes place in the mitochondria. They need mitochondria for this reason.
Hence with this logic, we can say that Plants cells have mitochondria.
Correct Answer: The cell grows
Explanation:
The cell carries out the metabolic processes and it grows during interphase.
The cell cycle has three phases that must occur before mitosis, or cell division happens. These three phases are collectively known as interphase. They are G1, S, and G2.
Correct Answer: 1,000,000
Explanation:
There are about 1,000,000 nephrons in each human kidney.
Nephron, functional unit of the kidney, the structure that actually produces urine in the process of removing waste and excess substances from the blood.
Correct Answer: Haploid cells
Explanation:
Unlike Mitosis, Meiosis results in the formation of 4 Genetically different cells.
Meiosis results in the formation of 4 Haploid daughter cells from one Diploid parent cell.
Correct Answer: Genes are located on DNA present in the chromosome Chromosomes are present in the nucleus of the cell
Correct Answer: All the above
Explanation:
Prokaryotic cells lack a nucleus and do not have an extensive system of interior membranes. They are encased in a cell wall and many contain external structures such as a capsule, flagellum, or pili. Prokaryotes ? have a relatively uniform interior that is not subdivided by internal membranes.
Correct Answer: All the carbon atoms in glucose ultimately incorporated during cellular respiration into carbon dioxide molecule
Explanation:
All the carbon atoms in glucose ultimately incorporated during cellular respiration into carbon dioxide molecules.
Correct Answer: Chloroplast
Explanation:
The endomembrane system is composed of the different membranes that are suspended in the cytoplasm within a eukaryotic cell. These membranes divide the cell into functional and structural compartments or organelles. In eukaryotes, the organelles of the endomembrane system include the nuclear membrane, the endoplasmic reticulum, the Golgi apparatus, lysosomes, vesicles, endosomes and the cell membrane, among others.
Correct Answer: are nutrient-poor environments
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