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- Question
Which statement regarding the mammalian heart is correct?
Options- A. Blood is pumped from the heart via the atria.
- B. Oxygen-loaded blood moves only through the right side of the heart.
- C. When the right atrium contracts, it forces blood into the left atrium.
- D. In the adult heart, blood in the right chambers of the heart cannot enter the left chambers without passing through the lungs.
- Correct Answer
- In the adult heart, blood in the right chambers of the heart cannot enter the left chambers without passing through the lungs.
ExplanationIn the adult heart, blood in the right chambers of the heart cannot enter the left chambers without passing through the lungs is correct regarding mammalian heart.
- 1. A gland below the bladder and surrounding the urethra is
Options- A. prostate
- B. seminal vesicle
- C. bartholin
- D. vas deferens Discuss
- 2. Which of the following is a characteristic of the Ascomycota?
Options- A. Sac formation
- B. Zygospore formation
- C. Basidium formation
- D. All of the above Discuss
- 3. Which of the following is true about blood plasma?
Options- A. The main protein component is hemoglobin.
- B. It is a faint yellow fluid.
- C. It is the same as serum but without the clotting proteins.
- D. It is about 90% water. Discuss
- 4. What is the purpose of the mucus in your nose?
Options- A. Protects lungs
- B. Clear air passage
- C. Protects nose
- D. All of the above Discuss
- 5. Which of the following is true about veins?
Options- A. Veins carry blood away from the heart, while arteries carry blood to the heart.
- B. Veins are more muscular than arteries.
- C. Veins have valves; arteries do not.
- D. Veins have a smaller diameter lumen than arteries. Discuss
- 6. ATP is a compound that is synthesized when
Options- A. digestive enzymes break amino acids into smaller pieces
- B. energy stored in nitrogen is released froming amino acids
- C. energy is stored in chemical bonds is released during cellular respiration
- D. chemical bonds between carbon atoms are formed by during photo synthesis Discuss
- 7. The outer membrane that covers the lungs
Options- A. Dura mater
- B. pleura
- C. Pia mater
- D. Myelin sheath Discuss
- 8. Which of the following is part of the axial skeleton?
Options- A. Thigh bone
- B. Shoulder bones
- C. Vertebral column
- D. Foot bones Discuss
- 9. A myocardial infarction is a heart attack.
Options- A. TRUE
- B. FALSE Discuss
- 10. What is the function of reverse transcriptase?
Options- A. synthesis of RNA from protein
- B. synthesis of DNA from an RNA template
- C. synthesis of protein from DNA
- D. synthesis of DNA from protein Discuss
Biology problems
Search Results
Correct Answer: prostate
Correct Answer: Sac formation
Explanation:
Ascomycota is a division or phylum of the kingdom Fungi that, together with the Basidiomycota, form the subkingdom Dikarya. Its members are commonly known as the sac fungi or ascomycetes.
Hence, Sac formation is a characteristic of the Ascomycota fungi.
Correct Answer: It is about 90% water.
Explanation:
The first option is incorrect because it is devoid of blood cell, also red blood cells so doesn?t contains haemoglobin.
The second option is incorrect because plasma is colorless.
The third option is also incorrect because plasma contains the clotting factors.
Correct Answer: Protects lungs
Explanation:
When you breathe in air through your nose, it contains lots of tiny things, like dust, dirt, germs, and pollen.
The air enters our body through the nose. However, before it enters the lungs, it must be heated and purified. Many dust particles that enter along with the air are removed in the nose by mucus and thus it protects lungs.
Correct Answer: Veins have valves; arteries do not.
Explanation:
Veins are blood vessels that carry blood toward the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart.
Veins are less muscular than arteries and are often closer to the skin. There are valves in most veins to prevent backflow.
Correct Answer: energy is stored in chemical bonds is released during cellular respiration
Correct Answer: pleura
Explanation:
The pleura is the membrane that covers the lungs, according to InnerBody. The pleura consists of two layers, with the parietal pleura forming the membrane's outer layer and the visceral pleura forming the membrane's inner layer.
Correct Answer: Vertebral column
Explanation:
The axial skeleton is the part of the skeleton that consists of the bones of the head and trunk of a vertebrate. In the human skeleton, it consists of 80 bones and is composed of six parts; the skull bones, the ossicles of the middle ear, the hyoid bone, the rib cage, sternum and the vertebral column.
Bones of shoulder, thigh and foot are the part of appendicular skeleton.
Hence, Vertebral column is the part of axial skeleton.
Correct Answer: TRUE
Correct Answer: synthesis of DNA from an RNA template
Explanation:
A reverse transcriptase (RT) is an enzyme used to generate complementary DNA (cDNA) from an RNA template by a process called Reverse Transcription.
In brief its function is that copies all or part of the virus RNA (retroviruses are RNA-only) as DNA which can then be integrated into the DNA of the host organism.
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