Biology Questions

Q:

Which of these statements is true of the kingdom protista?

A) All are unicellular B) All are hetertrophic
C) All are autotrophic D) All are eukaryotic
 
Answer & Explanation Answer: D) All are eukaryotic

Explanation:

Protists are eukaryotic organisms that cannot be classified as a plant, animal, or fungus. They are mostly unicellular, but some, like algae, are multicellular.

which_of_these_statements_is_true_of_the_kingdom_protista1536211148.jpg image

Kelp, or 'seaweed,' is a large multicellular protist that provides food, shelter, and oxygen for numerous underwater ecosystems.

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Q:

What do genes code for?

A) Ptoteins B) DNA
C) RNA D) None
 
Answer & Explanation Answer: A) Ptoteins

Explanation:

The genome of an organism is inscribed in DNA, or in some viruses RNA. The portion of the genome that codes for a protein or an RNA is referred to as a gene. Those genes that code for proteins are composed of tri-nucleotide units called codons, each coding for a single amino acid.

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Q:

Where does glycolysis take place in Eukaryotic cells?

A) Mitochondrial Outer membrane B) Cytoplasm
C) Mitochondrial inner membrane D) None of the above
 
Answer & Explanation Answer: B) Cytoplasm

Explanation:

Glycolysis is the first step of cellular respiration. This process breaks down glucose into two pyruvic acids, and produces 2 ATP and 2 NADH. 

In eukaryotic cells, glycolysis and fermentation reactions occur in the cytoplasm.

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Q:

The main result of aerobic respiration is the

A) production of lactic acid as an end product B) production of ATP from the breakdown of glucose
C) conversion of radiant energy into chemical energy D) storage of energy in a polysaccharide
 
Answer & Explanation Answer: B) production of ATP from the breakdown of glucose

Explanation:

The three steps within the aerobic respiration process are glycolysis, the citric acid cycle, and oxidative phosphorylation.

Photosynthesis builds glucose, and what was built in photosynthesis is broken down during aerobic respiration.

 

Hence, production of ATP from the breakdown of glucose is the main result of aerobic respiration.

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Q:

Movement of cell against concentration gradient is called

A) active transport B) diffusion
C) osmosis D) passive transport
 
Answer & Explanation Answer: A) active transport

Explanation:

The only transport method that can move species against their concentration gradient i.e, from low to high concentration is called Active transport.

 

Facilitated diffusion only moves species down their concentration gradient i.e, from high to low concentration.

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Q:

Hypnosis is sometimes used to treat anxiety disorders.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Hypnosis is a state of human consciousness involving focused attention, reduced peripheral awareness, and an enhanced capacity to respond to suggestion.

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Q:

Which of the following is not a function of proteins?

A) Build tissues such as bone and muscle B) Help to fight disease
C) Nail formation D) Store and transmit Heredity
 
Answer & Explanation Answer: D) Store and transmit Heredity

Explanation:

Protiens can help fight specific diseases, always there to regulate cell processes and build muscle/tissues.


Structural proteins also known as Fibrous proteins, are necessary components of your body. They include collagen, keratin and elastin. Collagen forms the connective framework of your muscles, bones, tendons, skin and cartilage. Keratin is the main structural component in hair, nails, teeth and skin.

 

  • Nucleic acids store and transmit heredity.
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Q:

Is yeast a fungus or bacteria?

Answer

Yeast belongs to members of the Kingdom Fungi.


 


Yeast are single-celled microorganisms that are classified, along with molds and mushrooms in Fungi family. 


 


Yeasts are evolutionally diverse and are therefore classified into two separate phyla, Ascomycota or sac fungi and Basidiomycota or higher fungi, that together form the subkingdom Dikarya.

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