Homework Answers
1. They all have the same DNA but activate different genes specific to their need.(CELL DIFFERENTIATION)
2.Robert hook
3.kidney control the level of water and salt level in blood while the function of kidney is controlled by HYPOTHALAMUS .
4.A PLACE FOR CELMULAR REACTION TO TAKE PLACE
all cellular reaction does not concern with cell membrane.
5.IN THE LUNGS
alveoli is the unit if gaseous exchange in animals.
6.PILLI
it is the hollow tube which attaches the f+ and f-bacteria during congugation
7.SECONDARY
Alfa helix is an example of 2ry structure of protein.
8.Watain and Crick discovered double helix structure of DNA with the help of experiment of Franklin in 1953.
9.USING ENERGY MEMBRANE PROTEIN PICKS UP PARTICLES AND MOVES THEMAGAINST THE CONCENTRATION GRADIENT
10.M.SCHLEIDEN AND T.SCHWAN DISCOVERED THAT ALL PLANTS AND ANIMALS ARE MADE OF CELLS
this is included under cell theory given by them
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How do cells become specialized so they can have specific functions? A. Your cerebellum signals the...
Of: a) NA as the site s eukaryotic cells become more specialized, the nucleus is NOT important sy...
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of: a) NA as the site s eukaryotic cells become more specialized, the nucleus is NOT important synthesis. b) Changes in the regulation of genes, c) DNA mutation, d) synthesis of mRNA, e) Golgi apparatus synthesis 4. Which of the following is associated with Co-enzyme A by the membrane of the mitochondrion for use in the Krebs cycle? a) proteins, b) amino acids, c) fatty acids, d) pyruvate e) glycogen 5. Which is NOT a characteristic of...
mays is a diploid species with 10 pairs of chromosomes in each somatic cell. How many...
mays is a diploid species with 10 pairs of chromosomes in each somatic cell. How many chromosomes will be found per cell in each of the following chromosome mutants? Questions 64 to 67 are connected 64) Trisomy? E) 21 D) 30 A) 19 B) 22 65) Monosomy E) 21 A) 19 B) 22 C) 60 66) triploid E) 21 B) 22 67) Tetrasomy D) 30 E) 21 A) 19 B) 22 68) Species I has 2n -12 chromosomes and species...
In multicellular organisms, what do groups of cells form? • A. Prokaryotes • B. Homeostasis •...
In multicellular organisms, what do groups of cells form? • A. Prokaryotes • B. Homeostasis • C. Cell walls • D. Tissues and organs Why do we shiver when it is cold? . A. It is the brain stimulating the person to move to a warmer location. • B. It is a side-effect of the pancreas signaling to the brain that it is losing heat. • C. It is an involuntary reaction that does not actually help our body. •...
_____membranes proteins are associated with the bilayer through interactions with other membrane component on the surface...
_____membranes proteins are associated with the bilayer through interactions with other membrane component on the surface of the membrane. Net movement of particles from a region where they are more concentrated to a region where they are law concentrated is called Diffusion of water through a selectively permeable membrane down its own concentration gradient It called A solution with an equivalent concentration of water and hence the tame osmotic pressure as the fluid inside the cell is said to be...
Why do cells lack membrane transport proteins that are specific for the movement of Oz? Choose...
Why do cells lack membrane transport proteins that are specific for the movement of Oz? Choose one: A. because oxygen is transported in and out of the cell by special oxygen-binding proteins such as hemoglobin B. because oxygen concentrations must be kept low inside cells to avoid creating reactive superoxide radicals that can damage DNA and proteins C. because oxygen, dissolved in water, can enter cells via aquaporins D. because oxygen dissolves readily in lipid bilayers E. because transport of...
21. The ______ prevents plants cells from bursting when place in a ____ solution. a) centrioles-hypotonic...
21. The ______ prevents plants cells from bursting when place in a ____ solution. a) centrioles-hypotonic b) chloroplasts-hypertonic c) plasma membrane-hypertonic d) vacuole-hypertonic e) cell wall-hypotonic 22. Specialized cells like your own lung cells each lack which of the following organelles which are commonly found in an onion. a) cell membrane b)cell wall c)ribosomes d)nucleolus e) none of the above ______ 23. White blood cells engulf and destroy foreign particles by a process known as phagocytosis which is actually a)...
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion...
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion of _________________ hydrocarbon tails, enabling them to stay fluid.For example, cold-adapted organisms such as winter wheat increase the percentage of _________________ phospholipids in their membranes in the autumn to prevent the membranes from solidifying during winter.There are two major populations of membrane proteins: ___________ and _____________.Integral proteins penetrate the hydrophobic interior of the lipid bilayer, usually completely spanning the membrane as ________________ proteins.________________ proteins...
41. Phospholipids are amphipathic molecules a. True 42. Which of the following structure's protect a plant...
41. Phospholipids are amphipathic molecules a. True 42. Which of the following structure's protect a plant cell from bursting due to the uptake of excess water? b. False a. Mitochondria b. Plasma membrane c. Chloroplast 43. The opening of d. Cell wall channels is controlled by the binding of a substance to the channel. a. Mechanically-gated c. Voltage-gated b. Ligand-gated d. DNA 44. The concentration of Ca' is in the cell, but outside of the cell. c. Higher .... Lower...
If every cell in the body gets the same DNA, how do the cells of an...
If every cell in the body gets the same DNA, how do the cells of an embryo make different structures and take on different roles? (Select all that apply.) A. Different transcription factors are active in different cells. B. Different transcription factors are encoded in the DNA. C. Genes are spliced differently in different cells. D. Translation is regulated so that different cells may make more of certain proteins. E. Some cells lack ribosomes while others use them. F. Cells...
2. How is ATP used in most cell processes? a. It binds to a substrate and...
2. How is ATP used in most cell processes? a. It binds to a substrate and provides energy when the phosphate group is released. b. indirectly, by providing electrons to an acceptor c. Hydrolysis of ATP is coupled to an endergonic reaction. d. It increases the efficiency of some key enzymes. e. none of the above 2. How is ATP used in most cell processes? a. It binds to a substrate and provides energy when the phosphate group is released....
PLEASE ANSWER ALL
of: a) NA as the site s eukaryotic cells become more specialized, the nucleus is NOT important synthesis. b) Changes in the regulation of genes, c) DNA mutation, d) synthesis of mRNA, e) Golgi apparatus synthesis 4. Which of the following is associated with Co-enzyme A by the membrane of the mitochondrion for use in the Krebs cycle? a) proteins, b) amino acids, c) fatty acids, d) pyruvate e) glycogen 5. Which is NOT a characteristic of...
mays is a diploid species with 10 pairs of chromosomes in each somatic cell. How many chromosomes will be found per cell in each of the following chromosome mutants? Questions 64 to 67 are connected 64) Trisomy? E) 21 D) 30 A) 19 B) 22 65) Monosomy E) 21 A) 19 B) 22 C) 60 66) triploid E) 21 B) 22 67) Tetrasomy D) 30 E) 21 A) 19 B) 22 68) Species I has 2n -12 chromosomes and species...
In multicellular organisms, what do groups of cells form? • A. Prokaryotes • B. Homeostasis • C. Cell walls • D. Tissues and organs Why do we shiver when it is cold? . A. It is the brain stimulating the person to move to a warmer location. • B. It is a side-effect of the pancreas signaling to the brain that it is losing heat. • C. It is an involuntary reaction that does not actually help our body. •...
_____membranes proteins are associated with the bilayer through interactions with other membrane component on the surface of the membrane. Net movement of particles from a region where they are more concentrated to a region where they are law concentrated is called Diffusion of water through a selectively permeable membrane down its own concentration gradient It called A solution with an equivalent concentration of water and hence the tame osmotic pressure as the fluid inside the cell is said to be...
Why do cells lack membrane transport proteins that are specific for the movement of Oz? Choose one: A. because oxygen is transported in and out of the cell by special oxygen-binding proteins such as hemoglobin B. because oxygen concentrations must be kept low inside cells to avoid creating reactive superoxide radicals that can damage DNA and proteins C. because oxygen, dissolved in water, can enter cells via aquaporins D. because oxygen dissolves readily in lipid bilayers E. because transport of...
41. Phospholipids are amphipathic molecules a. True 42. Which of the following structure's protect a plant cell from bursting due to the uptake of excess water? b. False a. Mitochondria b. Plasma membrane c. Chloroplast 43. The opening of d. Cell wall channels is controlled by the binding of a substance to the channel. a. Mechanically-gated c. Voltage-gated b. Ligand-gated d. DNA 44. The concentration of Ca' is in the cell, but outside of the cell. c. Higher .... Lower...
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