8. Which of the following are homogeneous in nature?
© Ice
(ii) Wood
(ii) Soil
(iv) Air
a) (i) and (in)
b) (ii) and (iv)
c) ()and (iv)
d) (iii) and (iv)
9. Which of the following statements are true for pure substances?
(0) Pure substance contain only one kind of particles
(ii) Pure substance may be compounds or mixtures
(iii) Pure substances have the same composition throughout
(iv) Pure substances can be exemplified by all elements other than nickel.
a) () and (iii)
b) (i) and (ii)
c) (iii) and (iv)
d) (ii) and (iii)
10. Where are the essential proteins and lipids required for cell membrane, Manufactured?
a) Lysosome
d) Mitochondria
b) Chormosomes
c) Endoplasmic reticulum
11. Which of the following is connective tissue?
a) Ligamen's
b) Tendon
c) Blood
d) All of the above
if u answer this i will mark u as brainalist
Answers
Answer:
8.ANSWER
ANSWERIce is solid with same composition of water molecule.
ANSWERIce is solid with same composition of water molecule. Wood consists of cells, and the cell walls are composed of microfibrils of cellulose (40% to 50%) and hemicellulose (15% to 25%) impregnated with lignin (15% to 30%). Thus, it is heterogeneous in nature.
ANSWERIce is solid with same composition of water molecule. Wood consists of cells, and the cell walls are composed of microfibrils of cellulose (40% to 50%) and hemicellulose (15% to 25%) impregnated with lignin (15% to 30%). Thus, it is heterogeneous in nature.Soil is a heterogeneous mixture. Soil is made up of a variety of substances, such as pebbles, plant matter and sand, but these components remain separate in the mixture.
ANSWERIce is solid with same composition of water molecule. Wood consists of cells, and the cell walls are composed of microfibrils of cellulose (40% to 50%) and hemicellulose (15% to 25%) impregnated with lignin (15% to 30%). Thus, it is heterogeneous in nature.Soil is a heterogeneous mixture. Soil is made up of a variety of substances, such as pebbles, plant matter and sand, but these components remain separate in the mixture.Air is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances.
ANSWERIce is solid with same composition of water molecule. Wood consists of cells, and the cell walls are composed of microfibrils of cellulose (40% to 50%) and hemicellulose (15% to 25%) impregnated with lignin (15% to 30%). Thus, it is heterogeneous in nature.Soil is a heterogeneous mixture. Soil is made up of a variety of substances, such as pebbles, plant matter and sand, but these components remain separate in the mixture.Air is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances.Hence, option C is correct.
Answer: Option C is correct
9.ANSWER
ANSWERCharacteristics of pure substance:-
ANSWERCharacteristics of pure substance:-A pure substance contains only one type of particles which can either be atoms or molecules or elements or compounds.
ANSWERCharacteristics of pure substance:-A pure substance contains only one type of particles which can either be atoms or molecules or elements or compounds.A pure substance cannot be separated into other kinds of matter by any physical process but a mixture can as they are impure substances because they contain more than one particles. Ex: salt solutions.
ANSWERCharacteristics of pure substance:-A pure substance contains only one type of particles which can either be atoms or molecules or elements or compounds.A pure substance cannot be separated into other kinds of matter by any physical process but a mixture can as they are impure substances because they contain more than one particles. Ex: salt solutions.A pure substance has fixed composition as well as fixed melting and boiling points. Ex: salt.
ANSWERCharacteristics of pure substance:-A pure substance contains only one type of particles which can either be atoms or molecules or elements or compounds.A pure substance cannot be separated into other kinds of matter by any physical process but a mixture can as they are impure substances because they contain more than one particles. Ex: salt solutions.A pure substance has fixed composition as well as fixed melting and boiling points. Ex: salt.Pure substances cannot be exemplified by all elements other than nickel because pure nickel is an element containing only one kind of particles.
ANSWERCharacteristics of pure substance:-A pure substance contains only one type of particles which can either be atoms or molecules or elements or compounds.A pure substance cannot be separated into other kinds of matter by any physical process but a mixture can as they are impure substances because they contain more than one particles. Ex: salt solutions.A pure substance has fixed composition as well as fixed melting and boiling points. Ex: salt.Pure substances cannot be exemplified by all elements other than nickel because pure nickel is an element containing only one kind of particles.Hence, the correct ans is (1) and (3).
Answer: Option A is correct
11. Answer: Option D is correct
Because three options are correct.
10. Answer:
The endoplasmic reticulum is of two types on the basis of the presence of ribosomes. If the endoplasmic reticulum ribosomes attached to them then it is called as rough endoplasmic reticulum and if there are no ribosomes on endoplasmic reticulum then it is called a smooth endoplasmic reticulum. Rough endoplasmic reticulum produces and transports protein and smooth endoplasmic reticulum produces and transports lipid which provides a framework to the plasma membrane by a known as membrane biogenesis.
Answer:C.) Endoplasmic recticulum
Explanation: