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Question - 1 : আমি ইংরেজিতে ভাল নই |

a) I am not good in English.

b) I am not good on English.

c) I am not good to English.

d) I am not good at English.

Discus in Board
Question - 2 : The fifth consonant from the beginning of this sentence is the letter_.v

a) a

b) i

c) e

d) t

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Question - 3 : বৃত্তের ব্যাস তিনগুন বৃদ্ধি করলে ক্ষেত্রফল কতগুন বৃদ্ধি পাবে?

a) ১২



d) ১৬

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Question - 4 : আপনার ফ্লাইট বিলম্বিত হয়েছে |

a) Your flight is delay.

b) Your flight to delayed.

c) Your flight is delayed.

d) Your flight is delayed too.

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Question - 5 : নিচের কোনটি DNA এর নাইট্রোজেন বেস?

a) গোয়ানিন

b) ইউরাসিল

c) পিরিডক্সিন

d) এ্যাসপারাজিন

Discus in Board
Question - 6 : মানুষের গায়ের রং কোন উপাদানের উপাদানের উপর নির্ভর করে?

a) হিমোগ্লোবিন

b) ক্যলোরিন

c) থায়ামিন

d) মেলানিন

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Question - 7 : সে কখনো পরের নিন্দা করে না |

a) He never speak ill of other.

b) He never speaks ill of other.

c) He never speaks to ill of other.

d) He never speaks ill of others.

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Question - 8 : জাপান ও রাশিয়ার মধ্যকার বিরোধপূর্ণ দ্বীপটির নাম কি ?

a) দিয়াগো গার্সিয়া

b) মার্শাল দ্বীপপুঞ্জ

c) কুড়িল দ্বীপপুঞ্জ

d) গ্রেট বেরিয়ার রীফ

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Question - 9 : সে এত চালাক যে তাকে সহজে বুঝতে পারা যায় না |

a) He is to clever to be understand easily.

b) He is too clevered to be understand easily.

c) He is too clever to be understand easily.

d) He is too clever to be understand easy.

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Question - 10 : মার্কিন যুক্তরাষ্টের কোন প্রেসিডেন্ট ১২ বছর ক্ষমতায় অধিষ্ঠিত ছিলেন?

a) হ্যারি এস ট্রুম্যান

b) ফ্রাঙ্কলিন রুজভেল্ট

c) জেমস মনরো

d) তথ্যটি সঠিক নয়

Discus in Board

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.