Self Studies
Self Studies
Self Studies
Self Studies

Biomolecules Test - 13

Result Self Studies

Biomolecules Test - 13
  • 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
    1 / -0
    The formation of protein can be considered as
    Solution
    Proteins are synthesized by joining together of amino acids. Amino acids are joined together by dehydration condensation reactions in which a water molecule is released when two amino acids react. One of the amino acids contributes a hydroxyl group from its carboxylic group and another amino acid contributes a proton from its amino group and one water molecule is removed leading to the formation of a peptide bond between amino acids.
  • Question 2
    1 / -0
    Gene is composed of which of the following?
    Solution
    Gene is a polynucleotide. A gene is the molecular unit of heredity of a living organism. It is used extensively by the scientific community as a name given to some stretches of deoxyribonucleic acids (DNA) and ribonucleic acids (RNA) that code for a polypeptide or for an RNA chain that has a function in the organism.
    So, the correct answer is option B.
  • Question 3
    1 / -0
    Chemically hormones are
    Solution
    Hormones are the non-nutrient, intercellular chemical messengers or information molecules secreted by the endocrine glands in trace amounts. They are carried by blood to the target organ where they regulate the biological processes in the organisms by inhibiting or stimulating specific physiological processes. A single hormone may effect more than one function and each function may be controlled by several hormones. Hormones are chemically heterogenous and derive from diverse precursors such as amino acids, cholesterol or phospholipids.Chemically they can be divided into two broad classes : those that are soluble in lipids and those soluble in water. Lipid soluble hormones includes - 
    1. Steroid hormones derived from cholesterol example; hormones of adrenal cortex (cortisol, aldosterone, cortisone, corticosterone,etc.), testes (testosterone, androstenedione) and ovaries (estrogen, estradiol, progesterone) 
    2. Thyroid hormones (triiodothyronine and tetraiodothyronine). 
    Water soluble hormones are : 1. Amine hormones synthesized by modifying amino acids example; epinephrine, norepinephrine and dopamine. 2. Peptide and protein hormones such as insulin, TSH, human growth hormone, oxytocin etc. Therefore, chemically hormones can be proteins, steroids and biogenic amines. And the correct is B
  • Question 4
    1 / -0
    RNA synthesis is controlled by
    Solution
    RNA synthesis is controlled by RNA polymerase. RNA polymerase, also known as DNA dependent RNA polymerase, is an enzyme that produces primary transcript RNA. In cells, RNAP is necessary for constructing RNA chains using DNA genes as templates, a process called transcription. RNA polymerase enzymes are essential to life and are found in all organisms and many viruses. 
    So, the correct answer is option D.
  • Question 5
    1 / -0
    Which of the following bond is not related to nucleic acid?
    Solution
    A peptide bond is not related to nucleic acid. A peptide bond is a covalent chemical bond formed between two amino acid molecules. The peptide bond is synthesized when the carboxyl group of one amino acid molecule reacts with the amino group of the other amino acid molecule, causing the release of a molecule of water, hence the process is a dehydration synthesis reaction also known as a condensation reaction.
    So, the correct answer is option D.
  • Question 6
    1 / -0
    What replaces thymine in RNA?
    Solution
    In RNA, uracil binds to adenine via two hydrogen bonds. In DNA, the uracil nucleobase is replaced by thymine. Uracil could be considered a demethylated form of thymine. Each nucleotide in RNA contains a ribose sugar, with carbons numbered 1' through 5'. A base is attached to the 1' position, in general, adenine (A), cytosine (C), guanine (G), or uracil (U). Adenine and guanine are purines, cytosine and uracil are pyrimidines. 
    So, the correct answer is option C.
  • Question 7
    1 / -0
    Which one of the following hydrolyze internal phosphodiester bonds in a polynucleotide chain?
    Solution
    Endonucleases hydrolyse internal phosphodiester bonds in a polynucleotide chain. Function of nucleases is to break phosphodiester bond. A nuclease is an enzyme capable of cleaving the phosphodiester bonds between the nucleotide subunits of nucleic acids. Nucleases are usually further divided into endonucleases and exonucleases, although some of the enzymes may fall in both categories. 
  • Question 8
    1 / -0
    How many kinds of N$$_2$$ bases in nucleic acids are?
    Solution
    The nucleic acids like DNA and RNA are composed of nitrogenous bases, sugar and phosphorous. These nitrogenous bases are adenine (A), guanine (G), thymine (T), and cytosine (C). These nitrogenous bases have hydrogen bond between opposing DNA strands to form the rungs of the "twisted ladder" or double helix of DNA or a biological catalyst that is found in the nucleotides. Adenine is always paired with thymine, and guanine is always paired with cytosine. These are known as base pairs. Uracil is only present in RNA, replacing thymine. Pyrimidines include uracil, thymine, cytosine. They have a single ring structure. Purines include adenine and guanine. They have a double ring structure.
    So, the correct answer is option C.
  • Question 9
    1 / -0
    Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these
    Solution
    Correct Answer: D
    Explanation:

    There are more than a thousand biomolecules involve in living organisms in various biological processes. Some are vitamins, hormones, enzymes, ATP, carbohydrates, lipids, nucleic acids and proteins. Out of these main carbohydrates, proteins, lipids and nucleic acid are main biomolecules that play a vital role in living systems and are mainly responsible for almost all biochemical processes. The biological molecules or biomolecules are involved in the metabolic activities of living bodies such as plants and animals. Most of the biomolecules in the living cell have some broad functions like:
    1. They are essential to cellular and body structure.
    2. They act as energy-rich fuels during cellular respiration.
    3. The molecules are used to carry information of controlling growth and biological characteristics from one generation to another.
    4. They are good catalytic agents for the various chemical processes occur in cell and living body.
  • Question 10
    1 / -0
    Function of nucleases is to 
    Solution
    The function of nucleases is to break phosphodiester bond.  A nuclease is an enzyme capable of cleaving the phosphodiester bonds between the nucleotide subunits of nucleic acids. Nucleases are usually further divided into endonucleases and exonucleases, although some of the enzymes may fall in both categories. Well, known nucleases are deoxyribonuclease and ribonuclease.
    So, the correct answer is option B.
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