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- Question
What is the structural unit of compact bone?
Options- A. Osteon
- B. Spongy bone
- C. Lamellae
- D. Periosteum
- Correct Answer
- Osteon
- 1. The blind spot of the eye is where the optic nerve leaves the eyeball.
Options- A. TRUE
- B. FALSE Discuss
- 2. Which of these statements is true of the kingdom protista?
Options- A. All are unicellular
- B. All are hetertrophic
- C. All are autotrophic
- D. All are eukaryotic Discuss
- 3. Blood plasma is filtered in
Options- A. the renal capsule
- B. the renal column
- C. the renal tubule
- D. the renal corpuscle Discuss
- 4. Which best describes the structure of a DNA molecule?
Options- A. A double helix
- B. A strand of nucleic acids
- C. A single strand of amino acids
- D. A sugar ring Discuss
- 5. Enzymes are important because they
Options- A. maintain cell shape
- B. transfer genetic information
- C. contain water
- D. speeds up chemical reactions Discuss
- 6. Which RNA base pairs with the adenine in DNA?
Options- A. Thymine
- B. Cytosine
- C. Both A & B
- D. Uracil Discuss
- 7. The temperature danger zone for food is
Options- A. 5 - 63 deg
- B. above 45 deg
- C. below 15 deg
- D. None of the above Discuss
- 8. Innate immune system defenses include
Options- A. phagocytosis
- B. B cells
- C. plasma cells
- D. T cells Discuss
- 9. Protists and bacteria are grouped into different domains because
Options- A. protists have a membrane-bounded nucleus, which bacterial cells lack.
- B. protists eat bacteria
- C. bacteria decompose protists
- D. protists are photosynthetic Discuss
- 10. Which base is found only in RNA?
Options- A. Thyamine
- B. Adenine
- C. Uracil
- D. Cytosine Discuss
Biology problems
Search Results
Correct Answer: TRUE
Correct Answer: All are eukaryotic
Correct Answer: the renal capsule
Correct Answer: A double helix
Explanation:
DNA is not a single stranded and does not have amino acids. Hence options, b & C are eiminated. Dna is a double helix structure containing nucleobase?either cytosine (C), guanine (G), adenine (A), or thymine (T)?as well as a monosaccharide sugar called deoxyribose and a phosphate group.
Correct Answer: speeds up chemical reactions
Explanation:
Enzymes in the body are those which play an important role of breaking down the larger molecules to small and speeds up the chemical reactions.
Correct Answer: Uracil
Explanation:
In DNA, adenine pairs with Thymine. Similarly, in RNA, due to absence of thymine in RNA and the same structure with uracil helps to pair with adenine.
Correct Answer: 5 - 63 deg
Explanation:
The temperature danger zone for the food that cannot be stored for long time is between 5 degrees to 63 degrees centigrade.
Correct Answer: phagocytosis
Correct Answer: protists have a membrane-bounded nucleus, which bacterial cells lack.
Correct Answer: Uracil
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