jeylam2666

Which of the following is not a metallic mineral?

(A) Gypsum

(B) Limonite

(C) Bauxite

(D) Haematite

Blue vitriol is

(A) Sodium sulphate

(B) Iron sulphate

(C) Calcium sulphate

(D) Copper sulphate

Nuclear sizes are expressed in a unit named

A. Fermi

B. angstrom

C. newton

D. tesla

3.  The absorption of ink by blotting paper involves

A. viscosity of ink

B. capillary action phenomenon

C. diffusion of ink through the blotting

D. siphon action

How much does the Earth weigh?

Who is father of science?

How to find the marginal cost?

A protein that has 7 transmembrane domains:

a) must have two or more different internal signal sequences (aka “start transfer signals”)

b) must have at least 7 different internal signal sequences (aka “start transfer signals”)

c) must have no more than 2 different stop transfer sequences

d) cannot be inserted into the endoplasmic reticulum membrane

e) must have at least three of these transmembrane domains be hydrophilic.

Q55. What will happen during the NEXT stage of mitosis to the chromosomes in the cell shown above, and why?

A)All chromosomes will move toward the midline of the cell, because they are being pushed there by the spindle

B)All chromosomes will move toward the midline of the cell, because they are being pulled there by the spindle.

C)Half the chromatids will move to one side of the cell's midline and half to the other, because they are being pushed to opposite sides by the spindle.

D)Half the chromatids will move to one side of the cell's midline and half to the other, because they are being pulled to opposite sides by the spindle.

Which of the following about the directionality of nuclear import is FALSE?
Question 2 options:
Ran-GTP has higher affinity (binding strength) to nuclear import receptors than cargo proteins (that contain a nuclear localization sequence, NLS).
Ran-GTP undergoes GTP hydrolysis (to Ran-GDP+Pi) up arrival in the cytoplasm from the nucleus.
Ran-GEF enzymes are most highly abundant in the cytoplasm.
The asymmetric distribution of Ran-GEF and Ran-GAP enzymes is critical for directional nuclear import.
none of the above (are false) – all the above are true.

Question 10 (1 point)

Question 10 options:

Q57. In which direction do sister chromatids move during anaphase?A.)They move toward the middle of the parent cell, at or near the midline.B.)Each sister chromatid moves toward the center of the spindle pole it is attached to.C.)They move toward each other.D.) Sister chromatids separate and move in metaphase, not anaphase.Q58. Why does the nuclear envelope dissolve during mitosis?*Check all that apply*:To allow the spindle to attach to chromosomes.To allow DNA to condense into chromosomes.To allow sister chromatids to move to opposite sides of the cell.To allow spindles to move to opposite sides of the cell.Q59. What would happen if DNA was not condensed into chromosomes during mitosis?A.)DNA would not be replicated.B.)The spindle would not form.C.)DNA could become tangled or tear while moving to opposite sides of the cell.D.)All of the above.Q60. The drug colchicine prevents microtubules from forming or growing. Which statement below of colchicine-treated cells in mitosis is FALSE?A.)Mitosis proceeds normally until the end of metaphase.B.) Colchicine disrupts mitosis in cancerous and noncancerous cells.C.) Chromosomes condense and the nuclear envelope dissolves normally.D.) The spindle will not attach to chromosomes.Q61. Suppose a cell lacked kinetochores, but produced otherwise normal chromosomes. In which stage would mitosis arrest?A.)ProphaseB.)PrometaphaseC.)MetaphaseD.)AnaphaseQ62. Imagine an animal cell was unable to break down its nuclear envelope during mitosis, so microtubules could not pierce the nuclear envelope. The cell is otherwise normal. In which stage would mitosis arrest?A.) ProphaseB.) PrometaphaseC.) MetaphaseD.) The cell would complete mitosis but would produce aneuploid daughter cells.Q63. A cell attempts mitosis with only one spindle pole (with many microtubules), but is otherwise normal. Which of the following is true for this cell?A.)The spindle would never attach to kinetochores.B.) f the drug Taxol were administered, the spindle would be unaffected.C.) The cell would begin but not complete telophase.D.)The cell would not be able to enter anaphase.Q64. Which of the following events occur after the nuclear envelope dissolves?Check all that apply:A.) DNA condenses into chromosomes.B.) Chromosomes align at the midline of the cell.C.) Cohesin dissolves.D.)Sister chromatids move to opposite sides of the cell.Q65. Which of the following are made of or contain DNA?Check all that apply:A.)ChromosomesB.) CohesinC.)KinetochoresD.) MicrotubulesQ66. Which of the following is a microtubule organizing center?A.) ChromosomeB.) CentrosomeC.) CentromereD.) None of theseQ67. How does the spindle move sister chromatids during anaphase?A.) Sister chromatids are pushed together, away from spindle poles.B.)Sister chromatids are pulled toward the spindle poles.C.)Spindle microtubules engage in a tug-of-war that centers chromosomes at the midline.D.) None of the above. Spindles do not use mechanical forces.

1. Nucleic acids are not found in which of the followingstructures?

Answer choice c

2. Some proteins that are on the surface of mammalian cellscontain carbohydrates. These proteins are synthesized by _______and the sugars added in the _______.

Answer choice A

3. Which of the following statements about the nucleus in animalcells is false?

Answer choice B

4.The endomembrane system

Answer choice B

5. Which of the following organelles is involved in energyconversions?

Answer choice C

6. Which of the following organelles are found only inplants?

Answer choice B

7. Plastids are

Answer choice C

8. Which of the following structures is directly involved withthe movement of organelles within a cell?

Answer choice B

9.Which of the following proteins powers the movement of bothcilia and vesicles within a cell?

Answer choice A

10. Amoeba proteus is injected with a drug thatinhibits the formation of microtubules. What effect does this haveon the organism's movement?

Answer choice B

1) Loss of troponin T from the thin filament will result inwhich of the following?

a) No crossbridge activity with increases incalcium

b) Contunially active crossbridge cycling in the absenceof calcium

c) Shorter thin filaments

d) Loss of tropomyosin

e) There is no effect on control ofcrossbridges

2) Blebbistatin is a newly identified small molecule inhuibitorof myosin heavy chain. Scientists determined that it binds to themyosin-ADP-Pi complex with high affinity and inhibits ADP-Pirelease. What step of cross bridge function is affected?

a) ATP binding to the myosin head

b) Myosin binding to actin

c) Release of bound myosin from actin

d) cross bridge movement

e) It causes rigor mortis.

3) The muscle contraction with the highest maximum velocity ofshortening occurs under what conditions?

a) Only when lifting the heaviest load

b) Only in the shortest muscles

c) Only in the muscles with the highest number ofmitochondria

d) Only under unloaded conditions

e) Only in the hamstring muscles

4) There is a disease in which skeletal muscle cannot storeglycogen. What would you predict as an outcome?

a) Increased muscular endurance

b) Less reliance on the liver for glucose duringcontractions

c) More reliance on the liver for glucose duringcontractions

d) Increased muscle strength

e) Changes in the length: tensionrelationship

5) Caffeine is a known agonist of the ryanodine receptor inmuscle. If you put caffeine on a single muscle fiber you wouldexpect the following to happen?

a) Generation of an action potential

b) Changes in DHPR status along thet-tubule

c) Increased SERCA activity

d) Hypertrophy of the muscle fiber

e) Decreased calcium levels outside thecell

Microtubules are responsible for? More than one answer

A. Myosin based motility in cells.

B. Separation of chromosomes at mitosis anaphase.

C. Cilia and flagellar motility.

D. Axonal transport, and can be used as markers in identification of axons in electron micrographs.

Part A

Which of the following accurately describes the nucleotide dependence of cilia and flagella structure and function?

Which of the following accurately describes the nucleotide dependence of cilia and flagella structure and function?

Axonemal dyneins are

The filament associated with cilia and flagella are constituted by:

Which utility removes unused files like temporary internet files from the hard drive?

What is an elemental unit of energy?

A. Quartz

B. Quark

C. Photon

D. Quantum

What is another term for vector product of two vectors?

A. Cross product

B. Vector product

C. Dot product

D. Plus product

How is sound intensity measured?

A. In beats

B. In decibels

C. In phons

D. In sones

The scalar product of two perpendicular vectors is always _______.

A. equal to 1

B. greater than 1

C. less than 1

D. equal to 0

 The vector product of any vector with itself is ______.

A. equal to 1

B. greater than 1

C. less than 1

D. equal to 0

 What refers to physical quantities that are completely specified by just a number and a unit or physical quantities that have magnitudes only?

A. Scalar quantities

B. Vector product

C. Dot product

D. Vector quantities

What refers to physical quantities that have a magnitude and a direction?

A. Scalar quantities

B. Vector quantities

C. Dot product

D. Vector quantities

Which of the following pairs of species would generate a salt derived from a weak acid and a weak base?

HCl and NaOH

HF and CH3NH2

H2S and Ca(OH)2

HNO3 and KF

Which solution may be chosen to protect the full volume of a notebook with Windows 10 enterprise os?

Choose the information system that minimizes data duplication among departments:

1. Enterprise information systems

2. Personal information systems

3. Both

4. None of these

What does Windows need to properly communicate with and use the functionality of hardware?

 Choose the correct option:

__________ stores the instructions that the computer needs in the startup process.

1. RAM    

2. ROM

3. Both

4. None of these

Choose the statement that is not true about memory and storage:

1. Random Access Memory keeps data and instructions permanently.

2. Hard disk stores data and instructions permanently.

3. Cache memory is the fastest memory holding intermediate data.

4. All of these.

What statement about user accounts and groups is not true?

1. by default, all users can access Remote Desktop
2. rights are assigned to accounts
3. A user account can belong to only one group at a time
4. When you copy a file, the file takes on the permission of the destination folder.

Choose the correct alternative to fill in the blanks:

Flash drives require  ________ to connect with a computer.

1. Motherboard

2. USB port

3. Serial port

4. Parallel port

5. All of these

Do all accounts serve the same function? why or why not?

a. Yes, all accounts help people increase their money.

b. No, some accounts are for saving and others are for investing.

c. Yes, all accounts are designed to ensure a return on investment.

d. No, accounts serve the purpose that their owners choose.

 A non-spherical shining spoon can generally be considered as a -
1) Spherical mirror
2) Parabolic mirror
3) Plane mirror
4) Lens

Which one of the following laws of electromagnetism does not give the direction of magnetic field?
1) Right-hand thumb rule
2) Fleming's left-hand rule
3) Fleming's right-hand rule
4) Faraday's law of electromagnetic induction

The direction of acceleration in uniform circular motion is along the -
1) direction of motion
2) tangent to the circle at the point of observation
3) direction of velocity
4) direction perpendicular to velocity

 The weight of an object is due to -
1) the net force acting on it
2) the total of all forces acting on it irrespective of their directions
3) the force that it exerts on the ground
4) its inert property