Self Studies

Biology Test 335

Result Self Studies

Biology Test 335
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    4 / -1

    Which of the following organelles is responsible for the generation of cellular energy in the form of ATP?

    Solution

    Mitochondria are responsible for the generation of cellular energy in the form of ATP through the process of cellular respiration. They convert energy from nutrients into ATP, which cells use as a source of chemical energy.

     

  • Question 2
    4 / -1

    In which part of a eukaryotic cell does protein synthesis occur?

    Solution

    Protein synthesis occurs on the ribosomes, which can be found either floating freely in the cytoplasm or bound to the endoplasmic reticulum, forming rough ER. Ribosomes read mRNA sequences to assemble amino acids into polypeptide chains, forming proteins.

     

  • Question 3
    4 / -1

    Which of the following are examples of biopiracy?

    Solution

    Biopiracy refers to use of bioresources by multinational companies and other organizations without proper authorization from the countries and people concerned without compensatory payment.

    Biopiracy is the practice of exploiting naturally occurring genetic or biochemical material in commerce. Most indigenous people have traditional knowledge that mainly involves genetic diversity and natural environment biological features from generation to generation.

    Brazzein protein, neem, basmati rice, turmeric are all very good example of biopiracy. These issues are governed by GEAC and dealt as ethical issues.

     

  • Question 4
    4 / -1

    What is the role of the Golgi apparatus in a cell?

    Solution

    The Golgi apparatus plays a crucial role in modifying, sorting, and packaging proteins for secretion or for use within the cell. It receives proteins from the rough endoplasmic reticulum, processes them, and then directs them to their destination.

     

  • Question 5
    4 / -1

    Which of the following is incorrect with respect to Bt toxin?

    Solution

    Bt toxin is commonly used to produce insecticide-resistant GM crops that can kill certain insects such as dipterans, coleopterans, and lepidopterans. Bacillus thuringiensis produces protein crystals encoded by the cry gene. This toxin exists in an inactive form called protoxins, but the inactive form gets converted into an active form in the alkaline pH of the insect gut, that solubilizes the crystals. This activated form of toxin binds to the midgut epithelial cells and create pores that causes death of the insect.

     

  • Question 6
    4 / -1

    Which of the following is a characteristic feature of prokaryotic cells?

    Solution

    A characteristic feature of prokaryotic cells is the lack of membrane-bound organelles, including the absence of a true nucleus. Their DNA is located in a nucleoid region, and they do not have complex organelles like mitochondria or chloroplasts.

     

  • Question 7
    4 / -1

    Transgenic models can be used to investigate many human diseases such as:

    Solution

    Transgenic animals are used for testing the safety of vaccines, drugs, studying diseases, like cystic fibrosis, haemophilia, cancer and Alzheimer's disease and study of complex growth factors such as insulin-like growth factors and have provided new insights into the genetic origin of certain diseases and have improved our understanding of pathological processes on the cellular level.

    Transgenic animals were used to study aspects of tumour growth, immune regulation, growth of the cardiovascular system and atherosclerosis. These studies provided new insights into the genetic roots of certain diseases and strengthened our understanding of cellular pathological processes.

     

  • Question 8
    4 / -1

    In which phylum do organisms have a body plan that includes a water vascular system?

    Solution

    The phylum Echinodermata, which includes starfish, sea urchins, and sea cucumbers, is characterized by a unique water vascular system. This system is a network of hydraulic canals branching into tube feet that allow for locomotion, feeding, and gas exchange. Arthropoda, Mollusca, and Annelida do not have a water vascular system. An interesting fact about the water vascular system is that it operates based on hydraulic pressure, allowing echinoderms to move and manipulate objects in a coordinated manner despite lacking a brain.

     

  • Question 9
    4 / -1

    What is the primary site for the exchange of gases in the human body?

    Solution

    The alveoli are the primary sites for the exchange of gases. They are tiny, balloon-like structures in the lungs where oxygen is absorbed into the blood and carbon dioxide is released from the blood. This process is facilitated by the large surface area and thin walls of the alveoli, making them perfectly suited for gas exchange.

     

  • Question 10
    4 / -1

    Which of the following is NOT a method by which CO2 is transported in the blood?

    Solution

    Carbon dioxide is transported in the blood in three main ways: dissolved in plasma, as bicarbonate ions in plasma, and bound to hemoglobin as carbaminohaemoglobin. It does not attach to oxygen molecules for transport. This highlights the body's efficient mechanisms for transporting gases where they need to go.

     

Self Studies
User
Question Analysis
  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now