Nokea
Anaerobic respiration happens in.............because..............
- A. Animals; they primarily rely on aerobic respiration
- B. Plants; they can perform photosynthesis
- C. Bacteria; they live in environments with low oxygen levels
- D. None of the above
Correct Answer: C
Rationale: Anaerobic respiration occurs in bacteria because they live in environments with low oxygen levels. In the absence of oxygen, these organisms utilize anaerobic respiration to generate energy. Animals and plants primarily rely on aerobic respiration, which requires oxygen to produce energy efficiently. Plants do not lack sunlight; they can perform photosynthesis to derive energy. Animals do require energy but predominantly use aerobic respiration when oxygen is available.
You may also like to solve these questions
Where is the slide placed on a light microscope?
- A. Stage
- B. Arm
- C. Lens
- D. Base
Correct Answer: A
Rationale: In a light microscope, the slide is placed on the stage, which is a flat platform designed to hold the specimen being observed. The stage provides stability for the slide and allows for adjustments to focus the lens on the specimen. The arm, lens, and base have specific functions in the operation of the microscope but are not where the slide is placed.
Which organelle is responsible for organizing protein synthesis?
- A. mitochondria
- B. nucleus
- C. ribosome
- D. vacuole
Correct Answer: C
Rationale: The organelle responsible for organizing protein synthesis is the ribosome. Ribosomes are the cellular structures where proteins are synthesized or produced. They can be found free-floating in the cytoplasm or attached to the endoplasmic reticulum. Mitochondria are known as the powerhouse of the cell, responsible for generating energy through cellular respiration. The nucleus is the control center of the cell, housing the genetic material and controlling cell activities. Vacuoles are responsible for storing various substances within the cell and maintaining turgor pressure.
Which organelle is responsible for protein synthesis?
- A. Ribosome
- B. Chloroplast
- C. Lysosome
- D. Mitochondria
Correct Answer: A
Rationale: The correct answer is A, Ribosome. Ribosomes are the organelles responsible for protein synthesis in a cell. They are the site where amino acids are assembled into proteins based on the genetic information carried by mRNA. Chloroplasts are responsible for photosynthesis in plant cells, Lysosomes contain enzymes for digestion and waste removal, and Mitochondria are known as the powerhouse of the cell, responsible for generating energy.
In a population of dogs, fur color is determined by two alleles: black (B) and tan (b). The black allele shows complete dominance. If a dog has tan fur, what is its genotype?
- A. BB
- B. Bb
- C. bb
- D. Not enough information
Correct Answer: C
Rationale: When a dog has tan fur, it indicates that it has two recessive alleles for tan fur, which is represented as bb. Since black (B) is dominant over tan (b), the genotype of a dog with tan fur must be bb.
Lipids are better known as fats, but what are they specifically? (Select one that doesn't apply.)
- A. Fatty acids
- B. Phospholipids
- C. Ketones
- D. Steroids
Correct Answer: C
Rationale: Lipids are a diverse group of molecules that include fatty acids, phospholipids, and steroids. Ketones, while important in metabolism, are not typically classified under lipids. Ketones are produced during the breakdown of fatty acids or amino acids, but they are not themselves lipids. Therefore, option C, Ketones, is the correct answer as it does not specifically fall under the category of lipids.