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- Question
What organelle is responsible for photosynthesis?
Options- A. mitochondria
- B. Cytoplasm
- C. Chloroplasts
- D. Ribosomes
- Correct Answer
- Chloroplasts
ExplanationChloroplasts are organelles in plant and bacteria cells that contain the chlorophyll is responsible for photosynthesis.
- 1. 3 functions of the nervous system? Discuss
- 2. In a plant cell, DNA may be found in
Options- A. only in the nucleus and mitochondria.
- B. only in the nucleus and chloroplasts
- C. in the nucleus, mitochondria, and chloroplasts.
- D. only in the nucleus. Discuss
- 3. Which action is the best example of a direct observation?
Options- A. listening to a cricket chirp at night and counting the number of chirps per minute
- B. determining the seal population of an island by counting seals in 10 square meters of the island
- C. identifying which bird was present by the tracks that it leaves in the sand at a beach
- D. reading numbers on a heat sensor to conclude that there is a deer in the night woods Discuss
- 4. What is the main component of bones and teeth?
Options- A. Calcium Phosphate
- B. Calcium Carbonate
- C. Calcium Nitrate
- D. Calcium Sulphate Discuss
- 5. The longest period of prenatal development is the
Options- A. Germinal period
- B. Fetal period
- C. Embryonic period
- D. None Discuss
- 6. Heat transfer horizontally within the atmosphere is called
Options- A. Convection
- B. Advection
- C. Conduction
- D. Absorption Discuss
- 7. Plants developing in dry conditions are
Options- A. lithophytes
- B. hydrophytes
- C. mesophytes
- D. xerophytes Discuss
- 8. While landing what type of tyres are used in an Aircraft?
Options- A. Water tubed
- B. Thick tubed
- C. Tubeless
- D. Thin tubed Discuss
- 9. Which part of the brain is responsible for memory?
Options- A. Cerebellum
- B. Medulla Oblongata
- C. Cerebrum
- D. All of the above Discuss
- 10. Plants wilt due to excess of
Options- A. Photosynthesis
- B. Absorption
- C. Transpiration
- D. None of the above Discuss
General Science problems
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Correct Answer: The nervous system is the part of an animal that coordinates its actions by transmitting signals to and from different parts of its body In vertebrates it consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS) The CNS consists of the brain and spinal cord The PNS consists mainly of nerves, which are enclosed bundles of the long fibers or axons, that connect the CNS to every other part of the body The nervous system has three main functions: * To collect sensory input from the body and external environment * To process and interpret the sensory input * To respond appropriately to the sensory input
Correct Answer: in the nucleus, mitochondria, and chloroplasts.
Explanation:
All of the genetic information in a cell was initially thought to be confined to the DNA in the chromosomes of the cell nucleus.
It is now known that small circular chromosomes, called extranuclear, or cytoplasmic, DNA, are located in two types of organelles found in the cytoplasm of the cell.
These organelles are the mitochondria in animal and plant cells and the chloroplasts in plant cells.
Chloroplast DNA (cpDNA) contains genes that are involved with aspects of photosynthesis and with components of the special protein-synthesizing apparatus that is active within the organelle.
Mitochondrial DNA (mtDNA) contains some of the genes that participate in the conversion of the energy of chemical bonds into the energy currency of the cell?a chemical called adenosine triphosphate (ATP)?as well as genes for mitochondrial protein synthesis.
Correct Answer: listening to a cricket chirp at night and counting the number of chirps per minute
Correct Answer: Calcium Phosphate
Explanation:
The main component of bones and teeth is Calcium Phosphate.
Correct Answer: Fetal period
Explanation:
The third and longest period of prenatal development, extending from the ninth week until birth is Fetal period.
The process of prenatal development occurs in three main stages. The first two weeks after conception are known as the germinal stage, the third through the eighth week are known as the embryonic period, and the time from the ninth week until birth is known as the fetal period.
Correct Answer: Advection
Correct Answer: xerophytes
Explanation:
Plants developing in dry conditions are called as xerophytes.
Correct Answer: Tubeless
Correct Answer: Cerebellum
Correct Answer: Transpiration
Explanation:
Plants wilt due to excess of Transpiration.
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