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 Biology Questions

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Q:

The fluid mosaic model describes the structure of

A) cell B) plasma membrane
C) nucleus D) All of the above
 
Answer & Explanation Answer: B) plasma membrane

Explanation:
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Q:

The renal medulla is composed of tissue called

A) Renal Sinus B) Renal Pyramids
C) Vasa Recta D) Renal Pelvis
 
Answer & Explanation Answer: B) Renal Pyramids

Explanation:

The renal medulla is composed of tissue called Renal Pyramids.

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Q:

Which of the following is considered a modified stem?

A) Tendril B) Taproot
C) Petiole D) Tuber
 
Answer & Explanation Answer: D) Tuber

Explanation:

Tuber is considered as a modified stem. These type of stems carry out special functions that are important for the plant to survive. Tubers serves as a food reserve and bearing buds wherein new plants can grow.

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Q:

Nematodes and arthropods both

A) are suspension feeders B) have ciliated larvae
C) develop an anus from the blastopore (pore) formed in the gastrula stage D) grow by shedding their exoskeleton
 
Answer & Explanation Answer: D) grow by shedding their exoskeleton

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Q:

During the light reactions of photosynthesis

During_the_light_reactions_of_photosynthesis1553000283.jpg image

A) the energy from sunlight is absorbed by the pigment chlorophyll B) the water are obserbed by roots
C) the sunlight is reflected by the leaf pigments D) All the above
 
Answer & Explanation Answer: A) the energy from sunlight is absorbed by the pigment chlorophyll

Explanation:

During the light reactions of photosynthesis the energy from sunlight is absorbed by the pigment chlorophyll present in the chloroplasts of the leafs.

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Q:

Biological membranes are composed of

A) Phospholipids B) Proteins
C) Carbohydrate groups D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Biological membranes are composed of phospholipids, Proteins and Carbohydrate groups attached to lipids and proteins.

 

Biological_membranes_are_composed_of1559036778.jpg image

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Q:

Sulphur Dioxide pollution is indicated by an excessive growth of which of the following?

A) Algal Blooms B) Lichens
C) Bryophytes D) Protozoa
 
Answer & Explanation Answer: B) Lichens

Explanation:
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Q:

Which plant cell organelle contains its own dna and ribosomes?

A) mitochondria B) Chloroplasts
C) Both A & B D) Vacuole
 
Answer & Explanation Answer: C) Both A & B

Explanation:

The plant cell organelles, "The power house of the cell" mitochondria and the chloroplasts contains their own DNA and ribosomes.

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