Is actin a microfilament? -Biology

Is actin a microfilament? -Biology
by

1 Answer

Answer :

Of the three types of protein fibers in the cytoskeleton, microfilaments are the narrowest. They function in cellular movement, have a diameter of about 7 nm, and are made of two intertwined strands of a globular protein called actin. For this reason, microfilaments are also known as actin filaments.
by

Related questions

Is actin a microfilament? -Biology

Description : Is actin a microfilament? -Biology

Last Answer : Of the three types of protein fibers in the cytoskeleton, microfilaments are the narrowest. They function in cellular movement, have a diameter of about 7 nm, and are made of two intertwined ... of a globular protein called actin. For this reason, microfilaments are also known as actin filaments.

Is actin a microfilament? -Biology

Description : Is actin a microfilament? -Biology

Last Answer : Of the three types of protein fibers in the cytoskeleton, microfilaments are the narrowest. They function in cellular movement, have a diameter of about 7 nm, and are made of two intertwined ... of a globular protein called actin. For this reason, microfilaments are also known as actin filaments.

Is actin a microfilament? -Biology

Description : Is actin a microfilament? -Biology

Last Answer : Of the three types of protein fibers in the cytoskeleton, microfilaments are the narrowest. They function in cellular movement, have a diameter of about 7 nm, and are made of two intertwined ... of a globular protein called actin. For this reason, microfilaments are also known as actin filaments.

Is microfilament in plant and animal cells? -Biology

Description : Is microfilament in plant and animal cells? -Biology

Last Answer : Common to all eukaryotic cells, these filaments are primarily structural in function and are an important component of the cytoskeleton, along with microtubules and often the intermediate filaments. Microfilaments are solid rods made of a protein known as actin.

Is microfilament in plant and animal cells? -Biology

Description : Is microfilament in plant and animal cells? -Biology

Last Answer : Common to all eukaryotic cells, these filaments are primarily structural in function and are an important component of the cytoskeleton, along with microtubules and often the intermediate filaments. Microfilaments are solid rods made of a protein known as actin.

Which component is a microfilament of the cytoskeleton? -Biology

Description : Which component is a microfilament of the cytoskeleton? -Biology

Last Answer : Microfilaments are fine, thread-like protein fibers, 3-6 nm in diameter. They are composed predominantly of a contractile protein called actin, which is the most abundant cellular protein. Microfilaments' association with the protein myosin is responsible for muscle contraction.

What is the function of a microfilament? -Biology

Description : What is the function of a microfilament? -Biology

Last Answer : Microfilaments assist with cell movement and are made of a protein called actin. Actin works with another protein called myosin to produce muscle movements, cell division, and cytoplasmic streaming. Microfilaments keep organelles in place within the cell.

Difference between microfilament and microtubule? -Biology

Description : Difference between microfilament and microtubule? -Biology

Last Answer : answer:

Which component is a microfilament of the cytoskeleton? -Biology

Description : Which component is a microfilament of the cytoskeleton? -Biology

Last Answer : answer:

What is the function of a microfilament? -Biology

Description : What is the function of a microfilament? -Biology

Last Answer : Microfilaments assist with cell movement and are made of a protein called actin. Actin works with another protein called myosin to produce muscle movements, cell division, and cytoplasmic streaming. Microfilaments keep organelles in place within the cell.

Difference between microfilament and microtubule? -Biology

Description : Difference between microfilament and microtubule? -Biology

Last Answer : answer:

What describ happens in th Main Sequence star th blws th nebula around it awy Describ the diferences betwen the T-Tauri and the Main Sequence in terms of which has a higher temperatur, how is their spectrm diferent, and what forces are actin on each objec?

Description : What describ happens in th Main Sequence star th blws th nebula around it awy Describ the diferences betwen the T-Tauri and the Main Sequence in terms of which has a higher temperatur, how is their spectrm diferent, and what forces are actin on each objec?

Last Answer : Sorry for the bad spelling, had to take a few characters out for the question to fit in

$ Rhodopsin of rod cells and iodospin of cone cells of retina are proteins ! Myosine and Actin are contractile proteins

Description : $ Rhodopsin of rod cells and iodospin of cone cells of retina are proteins ! Myosine and Actin are contractile proteins

Last Answer : $ Rhodopsin of rod cells and iodospin of cone cells of retina are proteins ! Myosine and Actin are ... wrong D. If both As and R are wrong.

The ion that must be present in adequate amount for the binding of cross bridges with actin is

Description : The ion that must be present in adequate amount for the binding of cross bridges with actin is

Last Answer : The ion that must be present in adequate amount for the binding of cross bridges with actin is A. `Ca^(2+)` B. `Na^(+)` C. `K^(+)` D. `Mg^(2+)`

The number of thick myofilaments (myosin) surrounding Single thin myofilament (actin) are

Description : The number of thick myofilaments (myosin) surrounding Single thin myofilament (actin) are

Last Answer : The number of thick myofilaments (myosin) surrounding Single thin myofilament (actin) are A. 3 B. 6 C. 2 D. 4

What lipid increases actin potential conduction speed?

Description : What lipid increases actin potential conduction speed?

Last Answer : Need answer

A protein having both structural and enzymatic traits is (A) Myosin (B) Collagen (C) Trypsin (D) Actin

Description : A protein having both structural and enzymatic traits is (A) Myosin (B) Collagen (C) Trypsin (D) Actin

Last Answer : Answer : A

Which of the following statement(s) is/are true concerning wound contraction? a. Wound contraction accounts for similar rates of reduction of wound size regardless of their location b. The fibroblast, at the cellular level, is the primary force driving wound contraction c. Excessive wound contraction, when occurring over a joint, may lead to disability d. Actin microfillaments are found in fibroblasts and may play a role in wound contracture

Description : Which of the following statement(s) is/are true concerning wound contraction? a. Wound contraction accounts for similar rates of reduction of wound size regardless of their location b. The fibroblast ... d. Actin microfillaments are found in fibroblasts and may play a role in wound contracture

Last Answer : Answer: b, c, d Wound contraction is an important event which contrasts healing open wounds and closed incisions. When open wounds contract, the surrounding skin is pulled over the open wound ... number in contracting wounds and are felt to play an active role in the process of wound contraction

The activities of the cytoskeleton is dependent on which of the following types of filaments? a. Microtubules b. Intermediate filaments c. Actin filaments d. None of the above

Description : The activities of the cytoskeleton is dependent on which of the following types of filaments? a. Microtubules b. Intermediate filaments c. Actin filaments d. None of the above

Last Answer : Answer: a, b, c The cytoskeleton is a collection of filamentous protein structures that allow cells to assume and maintain a variety of shapes, to produce directed movement of ... activities depend upon three main types of filaments: actin filaments, intermediate filaments, and microtubules

The biochemical mechanism of action of digitalis is associated with (a) A decrease in calcium uptake by the sarcoplasmic reticulum (b) An increase in ATP synthesis (c) A modification of the actin molecule (d) An increase in systolic intracellular calcium levels (e) A block of sodium/calcium exchange

Description : The biochemical mechanism of action of digitalis is associated with (a) A decrease in calcium uptake by the sarcoplasmic reticulum (b) An increase in ATP synthesis (c) A modification of the actin molecule (d) An increase in systolic intracellular calcium levels (e) A block of sodium/calcium exchange

Last Answer : Ans: D

Myosin bridges can be prevented from combining actin by two regulator proteins in resting muscle by (a) troponin (b) myofibril (c) troponin and tropomyosin (d) natural inhibiting proteins

Description : Myosin bridges can be prevented from combining actin by two regulator proteins in resting muscle by (a) troponin (b) myofibril (c) troponin and tropomyosin (d) natural inhibiting proteins

Last Answer : Ans:(c)

The H-disk in the skeletal muscle fibre is due to (a) the absence of myofibrils in the central portion of Aband (b) the central gap between myosin filaments in the Aband Questions (c) the central gap between actin filaments extending through myosin filaments in the A-band (d) birefringence of myosin filaments in the central portion of A-band

Description : The H-disk in the skeletal muscle fibre is due to (a) the absence of myofibrils in the central portion of Aband (b) the central gap between myosin filaments in the Aband Questions (c) the ... myosin filaments in the A-band (d) birefringence of myosin filaments in the central portion of A-band

Last Answer : Ans:(c)

The protein present in the finger nail is (1) Actin (2) Myosin (3) Globin (4) Keratin

Description : The protein present in the finger nail is (1) Actin (2) Myosin (3) Globin (4) Keratin

Last Answer : (4) Keratin Explanation: Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.

The contractile proteins in a muscle are (1) Actin and Myosin (2) Actin and Tropomyosin (3) Myosin and Troponin (4)Troponin and Tropomyosin

Description : The contractile proteins in a muscle are (1) Actin and Myosin (2) Actin and Tropomyosin (3) Myosin and Troponin (4)Troponin and Tropomyosin

Last Answer : (1) Actin and Myosin Explanation: Muscle fibers or myofibrils are formed of three types of proteins which are (1) contractile, (2) regulatory, and (3) structural. Contractile proteins are the force ... are Actin which is part of thin filament and Myosin, which is part of the thick filament.

In the skeletal muscle: a. myosin is found in the thick filament b. the thin filament contains actin and troponin c. during stimulus excitation calcium ions are derived from the serum d. tropomyosin masks the myosin-combining sites on the actin

Description : In the skeletal muscle: a. myosin is found in the thick filament b. the thin filament contains actin and troponin c. during stimulus excitation calcium ions are derived from the serum d. tropomyosin masks the myosin-combining sites on the actin

Last Answer : tropomyosin masks the myosin-combining sites on the actin

The following are true about the smooth muscle cells: a. presence of a striated appearance b. do not contain actin and myosin c. spontaneous muscle contraction d. mitochondria are absent

Description : The following are true about the smooth muscle cells: a. presence of a striated appearance b. do not contain actin and myosin c. spontaneous muscle contraction d. mitochondria are absent

Last Answer : spontaneous muscle contraction

With reference to the skeletal muscle myofilaments a. actin is the major constituent of thin filaments b. myosin and tropomyosin combine to form the thick filaments c. troponin is a constituents of thin filaments d. tropomyosin prevents the interaction of actin and myosin in the resting state

Description : With reference to the skeletal muscle myofilaments a. actin is the major constituent of thin filaments b. myosin and tropomyosin combine to form the thick filaments c. troponin is a constituents of thin filaments d. tropomyosin prevents the interaction of actin and myosin in the resting state

Last Answer : actin is the major constituent of thin filaments

The following are true about the smooth muscle cells: a. presence of a striated appearance b. do not contain actin and myosin c. spontaneous muscle contraction d. mitochondria are absent

Description : The following are true about the smooth muscle cells: a. presence of a striated appearance b. do not contain actin and myosin c. spontaneous muscle contraction d. mitochondria are absent

Last Answer : spontaneous muscle contraction

Genes are packaged into a bacterial chromosome by (a) acidic protein (b) actin (c) histones (d) basic protein.

Description : Genes are packaged into a bacterial chromosome by (a) acidic protein (b) actin (c) histones (d) basic protein.

Last Answer : basic protein

Which one of the following is the correct matching of three items and their grouping category? Items Group (a) Ilium, ischium, Coxal bones of pelvic girdle pubis (b) Actin, myosin, Muscle proteins rhodopsin (c) Cytosine, uracil, Pyrimidines thiamine (d) Malleus, incus, Ear ossicles cochlea

Description : Which one of the following is the correct matching of three items and their grouping category? Items Group (a) Ilium, ischium, Coxal bones of pelvic girdle pubis (b) Actin, myosin, Muscle proteins rhodopsin (c) Cytosine, uracil, Pyrimidines thiamine (d) Malleus, incus, Ear ossicles cochlea

Last Answer : (a) Ilium, ischium, Coxal bones of pelvic girdle pubis

During muscle contraction in humans, the (a) sarcomere does not shorten (b) A band remains same (c) A, H and I bands shorten (d) actin filaments shorten.

Description : During muscle contraction in humans, the (a) sarcomere does not shorten (b) A band remains same (c) A, H and I bands shorten (d) actin filaments shorten.

Last Answer : (b) A band remains same

The H-zone in the skeletal muscle fibre is due to (a) the central gap between actin filaments extending through myosin filaments in the A-band (b) extension of myosin filaments in the central portion of the A-band (c) the absence of myofibrils in the central portion of A-band (d) the central gap between myosin filaments in the A-band.

Description : The H-zone in the skeletal muscle fibre is due to (a) the central gap between actin filaments extending through myosin filaments in the A-band (b) extension of myosin filaments in the central portion ... the central portion of A-band (d) the central gap between myosin filaments in the A-band.

Last Answer : (a) the central gap between actin filaments extending through myosin filaments in the A-band

Sliding filament theory can be best explained as (a) actin and myosin filaments do not shorten but rather slide pass each other (b) when myofilaments slide pass each other, myosin filaments shorten while actin filaments do not shorten (c) when myofilaments slide pass each other actin filaments shorten while myosin filaments do not shorten (d) actin and myosin filaments shorten and slide pass each other.

Description : Sliding filament theory can be best explained as (a) actin and myosin filaments do not shorten but rather slide pass each other (b) when myofilaments slide pass each other, myosin filaments shorten ... filaments do not shorten (d) actin and myosin filaments shorten and slide pass each other.

Last Answer : (a) actin and myosin filaments do not shorten but rather slide pass each other

Calcium is important in skeletal muscle contraction because it (a) binds to troponin to remove the masking of active sites on actin for myosin (b) activates the myosin ATPase by binding to it (c) detaches the myosin head from the actin filament (d) prevents the formation of bonds between the myosin cross bridges and the actin filament.

Description : Calcium is important in skeletal muscle contraction because it (a) binds to troponin to remove the masking of active sites on actin for myosin (b) activates the myosin ATPase by binding to it ... filament (d) prevents the formation of bonds between the myosin cross bridges and the actin filament.

Last Answer : (a) binds to troponin to remove the masking of active sites on actin for myosin

Mitotic spindle is mainly composed of which protein? (a) Actin (b) Myosin (c) Actomyosin (d) Myoglobin

Description : Mitotic spindle is mainly composed of which protein? (a) Actin (b) Myosin (c) Actomyosin (d) Myoglobin

Last Answer : c) Actomyosin

Macrophages are professional antigen- presenting cells. The protein molecule through which theypresent antigen in human is A.actin B.interleukin C.HLA D.CD8

Description : Macrophages are professional antigen- presenting cells. The protein molecule through which theypresent antigen in human is A.actin B.interleukin C.HLA D.CD8

Last Answer : D.CD8

A major difference between EHEC and EPEC is A.EHEC secretes a Shiga-like toxin and EPEC does not B.EHEC possesses a type III secretion system and EPEC does not C.EPEC rearranges host cell actin and EHEC does not D.EPEC passes through the placenta to infect the fetus and EHEC does not

Description : A major difference between EHEC and EPEC is A.EHEC secretes a Shiga-like toxin and EPEC does not B.EHEC possesses a type III secretion system and EPEC does not C.EPEC rearranges host cell actin and EHEC does not D.EPEC passes through the placenta to infect the fetus and EHEC does not

Last Answer : A.EHEC secretes a Shiga-like toxin and EPEC does not

Macrophages are professional antigen- presenting cells. The protein molecule through whichthey present antigen in human is A- actin B- nterleukin C- HLA D- .CD8

Description : Macrophages are professional antigen- presenting cells. The protein molecule through whichthey present antigen in human is A- actin B- nterleukin C- HLA D- .CD8

Last Answer : .CD8

Calcium is important in skeletal muscle contraction because it :- (1) binds to troponin to remove the masking of active sites on actin for myosin. (2) activates the myosin ATPase by binding to it. (3) detaches the myosin head from the actin filament. (4) prevents the formation of bonds between the myosin cross bridges and the actin filament.

Description : Calcium is important in skeletal muscle contraction because it :- (1) binds to troponin to remove the masking of active sites on actin for myosin. (2) activates the myosin ATPase by binding to ... filament. (4) prevents the formation of bonds between the myosin cross bridges and the actin filament.

Last Answer : (1) binds to troponin to remove the masking of active sites on actin for myosin.

What is the function of proteins like microtubules and actin filaments?

Description : What is the function of proteins like microtubules and actin filaments?

Last Answer : Give structure to cells.

The microfilaments composed of (A) Actin protein (B) Gelatin protein (C) Keratin protein (D) Tubulin protein

Description : The microfilaments composed of (A) Actin protein (B) Gelatin protein (C) Keratin protein (D) Tubulin protein

Last Answer : (A) Actin protein

Microtubules consist of helically stacked molecules of the protein (A) Actin (B) Myosin (C) Keratin (D) Tubulin

Description : Microtubules consist of helically stacked molecules of the protein (A) Actin (B) Myosin (C) Keratin (D) Tubulin

Last Answer : (D) Tubulin

The phase of contraction of a muscle occurs when: a) tropomyosin binds and releases actin b) myosin binds and releases actin c) actin binds and releases myosin d) none of the above

Description : The phase of contraction of a muscle occurs when: a) tropomyosin binds and releases actin b) myosin binds and releases actin c) actin binds and releases myosin d) none of the above

Last Answer : ANSWER: B -- MYOSIN BINDS AND RELEASES ACTIN

The major fibrous proteins are: a) peptone and edestin b) glutelin and leucine c) valine and lysine d) myosin and actin

Description : The major fibrous proteins are: a) peptone and edestin b) glutelin and leucine c) valine and lysine d) myosin and actin

Last Answer : ANSWER: D -- Myosin and Actin

The organic portion of bone consists of which one of the following proteins. a) fibrin b) collagen c) actin d) myosin

Description : The organic portion of bone consists of which one of the following proteins. a) fibrin b) collagen c) actin d) myosin

Last Answer : ANSWER: B -- COLLAGEN

The myofilaments of muscles consist primarily of two proteins. These two proteins are called: a) actin and myosin b) progesterone and testosterone c) progesterone and estrogen

Description : The myofilaments of muscles consist primarily of two proteins. These two proteins are called: a) actin and myosin b) progesterone and testosterone c) progesterone and estrogen

Last Answer : ANSWER: A -- ACTIN AND MYOSIN

The contractile proteins in a muscle are (1) Actin and Myosin (2) Actin and Tropomyosin (3) Myosin and Troponin (4) Troponin and Tropomyosin

Description : The contractile proteins in a muscle are (1) Actin and Myosin (2) Actin and Tropomyosin (3) Myosin and Troponin (4) Troponin and Tropomyosin

Last Answer : Actin and Myosin 

The protein present in the finger nail is (1) Actin (2) Myosin (3) Globin (4) Keratin

Description : The protein present in the finger nail is (1) Actin (2) Myosin (3) Globin (4) Keratin

Last Answer : Keratin