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Question - 1 : পানামা খাল কোন মহাসাগরকে যুক্ত করেছে?

a) আটলান্টিক ও প্রশান্ত মহাসাগর

b) আটলান্টিক ও ভূমধ্যসাগর

c) ভারত ও প্রশান্ত মহাসাগর

d) প্রশান্ত মহাসাগর ও ভূমধ্যসাগর

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Question - 2 : Which sentence is correct ?

a) This is a unique case

b) This is an unique case

c) This is a very unique case

d) This is the most unique case

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Question - 3 : তোমাকে স্মার্ট হতে হবে |

a) You have to be smarts.

b) You have to be smarted.

c) You have to be smart too.

d) You have to be smart.

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Question - 4 : ‘গিন্নি’ কোন শ্রেণির শব্দ ?

a) অর্ধ-তৎসম

b) তৎসম

c) দেশি

d) বিদেশি

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Question - 5 : Choose the right word to fill the blank : Since his retirement, Mr. Chowdhury, who was a teacher, has written four novels

a) Already

b) Formerly

c) Presently

d) Usually

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Question - 6 : দয়া করে একটু সংযোগে থাকুন |

a) Hold the line please.

b) Held the line, please.

c) Hold the line, please.

d) Hold line, please.

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Question - 7 : ৪ টাকায় ৫টি করে কিনে ৫ টাকায় ৪ টি করে বিক্রয় করলে শতকরা কত লাভ হবে?

a) ৫২.৭৫%

b) ৫৬.২৫%

c) ৪৮.৫০%

d) ৪৫%

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Question - 8 : কোনটি সার্থক বাক্যের গুণ নয়?

a) আকাঙ্ক্ষা

b) যোগ্যতা

c) আসত্তি

d) আসক্তি

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Question - 9 : কোনটি পানিতে দ্রবীভূত হয় না ?

a) ফিটকিরি

b) সোডিয়াম ক্লোরাইড

c) ক্যালসিয়াম কার্বনেট

d) গ্লিসারিন

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Question - 10 : যদি 2 × 3 = 812, 4 × 5 = 1620 হয় তবে 6 × 7 = ?

a) 2442

b) 42

c) 2428

d) 1214

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Red Blood Cells (likewise called erythrocytes or RBCs)

Known for their brilliant red shading, red cells are the most bounteous cell in the blood, representing around 40 to 45 percent of its volume. The state of a red platelet is a biconcave circle with a straightened focus - as it were, the two essences of the circle have shallow bowl-like spaces (a red platelet resembles a doughnut).

Generation of red platelets is constrained by erythropoietin, a hormone created fundamentally by the kidneys. Red platelets start as juvenile cells in the bone marrow and after around seven days of development are discharged into the circulation system. In contrast to numerous different cells, red platelets have no core and can without much of a stretch change shape, helping them fit through the different veins in your body. Notwithstanding, while the absence of a core makes a red platelet progressively adaptable, it additionally restricts the life of the cell as it goes through the littlest veins, harming the cell's films and draining its vitality supplies. The red platelet makes due all things considered just 120 days.

Red cells contain a unique protein called hemoglobin, which helps convey oxygen from the lungs to the remainder of the body and afterward returns carbon dioxide from the body to the lungs so it tends to be breathed out. Blood seems red as a result of the huge number of red platelets, which get their shading from the hemoglobin. The level of entire blood volume that is comprised of red platelets is known as the hematocrit and is a typical proportion of red platelet levels.