Questions in Biology ..?

[همس الجوري]

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hello ..

I need the right answers for this questions
its necessary to the exam tommorow
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1l cell membranes consist mainly of a
a. carbohydrate bilayer and proteins
b.protein pilayer and phospholipids
c.lipid pilayer and proteins


2lmost membrane functions are carried out by
a.proteins
b.phospholipids
c.nucleic acids
d.hormones


3lImmerse a living cell in a hypotonic colution, and water tend to
a.move into the cell
b.move out of the cell
c.show no net movement
d.move in by endocytosis


4l ........ can readly diffuse across a lipid pilayer
a. glucose
b.oxygen
c. carbon dioxide
c.b and c


5l sodium ions cross a membrane hrough transport proteins that receive an energy boost. this is an example of
a.passive transport
b. active transport
c.faciliated diffusion
d.a and c


6l vesicle formation occurs in
a.membrane cycling
b.phagocytosis
c.endocytosis and exocytosis
d. all of the above


7l a duplicated chromosome has ......chromatid>s
a. one
b.two
c.three
d.four


8l in a chromosome, a ...... is a constricted region with attachment sites for microtubules.
a.chromatid
b.cell plate
c. centromere
d. abnormal



9l a somatic cell having two of each type of chromosome has a (n...... chromosome number
a.diploid
b.haploid
c.tetraploid
d.abnormal


10l Interphase is the part of the cell cycle when
a. a cell ceases to function
b. a germ cell forms its spindle apparatus
c. a cell grows and duplicates its DNA
d. mitosis proceeds



11l After mitosis , the chromosome number of a daughter cell is .... the parent cell's
a. the same as
b.one- half
c. rearranged compared to
d. doubled compared to



12l match each stage with the events lsted.
metaphase ( )
prophase ( )
telopase( )
anaphase ( )
a. sister chromatids move apart
b.chromosomes start to condense
c. chromosomes decondense and daughter nuclei form
d. all duplicated chromosomes are aligned at the spindle equator


13l an animal cell having two rather than one of each type of chromosome has a ..... chromosome number
a. diploid
b.haploid
c. normal gamete
c. both b and c



14l Generally, a pair of homologous chromosomes
a. carries the same genes
b. has the same length , shape
c. interacts at meiosis
d. all of the above


15l meiosis .... the parental chromosome number
a. doubles
b. reduces
c. maintains
d. corrupts


16l Before the onest of meiosis, all chromosomes are
a.condensed
b.released from protein
c.duplicated
d. both b and c

17l match each term with its description

chromosome number( )
alleles ( )
metaphase ( )
interphase ( )

a. different molecular forms of the same gene
b. none between meiosis 1 and 2
c. pairs of homologous chromosomes are now aligned at the spindle equator
d. sum total of chromosomes in all cells of a given type


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[همس الجوري]

حراام عليكم بكرره الاختبآآر

12 مشآآهده ومآفي رد وآحد :d1:

بليييييز لو سؤال بس كل وآحد يدخل يجآوب اللي يعرفه ويخلي البآقي

كذآ كلنآآ نستفيد

[m00na]

حلو الاسسئله همس من ويين جآيبتهم....

[همس الجوري]

من الملزمه موونآآ ..


وهذاا بس choose فيه اسئله بعد بسس مآفي وقت اذآكرهم

ولآنوو عندنآآ احياء وفيزياء اختبآر يوم السبت :(

وانا زفت بالبآيوو وماذاكرت فيه شي بس قريته كذآ

قلت ع الاقل احل الكم سؤال يمكن يجي منهم شي

[m00na]

وين بالضبط احنآ الملزمه حقتنا مآفيييه اسئله..

[همس الجوري]

شوفي الصفحات
79
95
161
175

بسس مآدري اذا موجوده بملزمتكم

لان انا مو من المكتبه ملزمتي مصورتهم بنت من كتآب دكتووره جيهآن اوضح من الملزمه اللي بمكتبة الأبرآآر ..

[m00na]

همسس غلآي
شوفي انا هالصفحات موب موجوده عندي بالملزمه
انتي ملزمتك مو اللي من الابرار

[m00na]

همسس
غلآي اذا تقدرين نلتقي يوم السبت
عششان اخذهآ منج اذا ممكن...:s13:

[همس الجوري]

اي ملزمتي مصوره من الكتآب

آوكي ولآيهمك مآتغلى عليك الملزمه قلبوو ..

[m00na]

مشششكوره
غلآي
الله يوفقك يآرب ويعينك ويسسآعدك ويسسهل لك
وتجيبين آحلآ درجه بالبآيو بكـرآ
الله يسسسعدك يآرب ويسسآعدك..
خلآص قلبو انا بقروب ون السآعه 12 بنتظرك عند كلآسسنآ
وبحآول اذا عرفت حل بعض الاسسئله بحلهم لك...