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Gadget G.

Gadget G.

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Both asexual sporangia (shown in the photo) and zygosporangia can be found in cow dung. Make a simplified drawing that illustrates the events of plasmogamy, karyogamy, and meiosis that occur during sexual reproduction in Pilobolus. Be sure to indicate and label the zygosporangium.

Both asexual sporangia (shown in the photo) and zygosporangia can be found in cow dung. Make a simplified drawing that illustrates the events of plasmogamy, karyogamy, and meiosis that occur during sexual reproduction in Pilobolus. Be sure to indicate and label the zygosporangium.

Biological Science

What does it mean to say that a hypha is dikaryotic? a. Two nuclei fuse during sexual reproduction to form a zygote. b. Two independent nuclei, derived from different individuals, are present in each cell. c. The nucleus is diploid or polyploid-not haploid. d. It is extremely highly branched, which increases its surface area and thus absorptive capacity.

What does it mean to say that a hypha is dikaryotic? a. Two nuclei fuse during sexual reproduction to form a zygote. b. Two independent nuclei, derived from different individuals, are present in each cell. c. The nucleus is diploid or polyploid-not haploid. d. It is extremely highly branched, which increases its surface area and thus absorptive capacity.

Biological Science

Questions asked

ANSWERED

Salamat Ali verified

Numerade educator

30. Opal is in a windowless, soundproof box so she cannot observe her surroundings beyond the walls of the box, and she is floating, apparently weightlessly, in the box, as shown. What can she conclude? A. She is not in a gravitational field. B. She cannot determine whether or not she is in a gravitational field. C. She is in free fall in a gravitational field. D. She is traveling with constant velocity in a gravitational field.

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ANSWERED

Salamat Ali verified

Numerade educator

29. As the speed of a particle approaches ( c ), what happens to its relativistic kinetic energy ( K ) and relativistic momentum ( vec{p} ) ? A. ( K ) and ( vec{p} ) both diverge from their Newtonian values. B. ( K ) diverges from its Newtonian value, but ( vec{p} ) continues to match. C. ( vec{p} ) diverges from its Newtonian value, but ( K ) continues to match. D. ( K ) and ( vec{p} ) both continue to match their Newtonian values.

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ANSWERED

Khoobchandra Agrawal verified

Numerade educator

29. As the speed of a particle approaches \( c \), what happens to its relativistic kinetic energy \( K \) and relativistic momentum \( \vec{p} \) ? A. \( K \) and \( \vec{p} \) both diverge from their Newtonian values. B. \( K \) diverges from its Newtonian value, but \( \vec{p} \) continues to match. C. \( \vec{p} \) diverges from its Newtonian value, but \( K \) continues to match. D. \( K \) and \( \vec{p} \) both continue to match their Newtonian values.

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ANSWERED

Mayukh Banik verified

Numerade educator

28. Twins Tasha and Sidra are both 20 years old. Tasha gets on a spaceship, accelerates to ( 0.9 c ), travels for several years to a distant star, and then returns at ( 0.9 c ), all while Sidra remains on Earth. When Tasha returns to Earth, how do their ages compare and why? A. Sidra is younger, because time passes more slowly for her. B. Sidra is younger, because Tasha observed time ticking slower for her. C. Tasha is younger, since she spent time in an accelerating reference frame. D. The twins are still the same age, since time is the same for all observers.

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ANSWERED

Linda Winkler verified

Numerade educator

27. You and your friend Asra both have identical ( 1.0 mathrm{~m} ) long rods. Asra gets on a spaceship with her rod and accelerates to ( 0.8 c ) relative to you, while you remain at rest. If you both hold your rods along the direction of relative velocity, what do each of you see? A. You and Asra each see the other's rod shortened. B. You see Asra's rod shortened, but she sees no change in yours. C. Asra sees your rod shortened, but you see no change in hers. D. You see Asra's rod shortened, and she sees yours lengthened.

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ANSWERED

Linda Winkler verified

Numerade educator

26. A spaceship travels past Earth at a relative speed of ( 0.6 c ). Standing on Earth, you hold a stopwatch and you can also observe a clock ticking on the spaceship. While you measure 5 seconds on your stopwatch, how many seconds do you observe tick by on the clock on the passing spaceship? A. 4 seconds B. 5 seconds C. 8 seconds D. 14 seconds

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ANSWERED

Salamat Ali verified

Numerade educator

25. An object is a distance ( d_{o}=3 R / 4 ) from a spherical concave mirror with radius of curvature ( R ), as shown. The center of curvature ( C ) and focal point ( F ) are indicated. What is the image distance from the vertex ( V ) along the optical axis? A. ( R ) B. ( 3 R / 2 ) C. ( 4 R / 3 ) D. ( 2 R )

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ANSWERED

Mayukh Banik verified

Numerade educator

24. Which of the following images shows what a star (essentially a point source of light) would look like through a telescope with a circular aperture? (no "spider") A B C D

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ANSWERED

Salamat Ali verified

Numerade educator

23. A laser shines monochromatic 650 nm red light (nm = 10^-9 m) at a double slit with separation 0.024 mm and produces an interference pattern on a screen 5.60 m from the slits, as shown. How far is the center of the first dark fringe from the center of the central bright fringe? The slit separation is greatly exaggerated in the diagram. A. 7.6 mm B. 1.4 mm C. 7.6 cm D. 4.3 mm

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ANSWERED

Salamat Ali verified

Numerade educator

22. A ray of light traveling in air ( left(n_{a i r} approx 1 ight) ) at an angle ( heta_{1}=53^{circ} ) transmits into another medium with index of refraction ( n_{b} ) at angle ( heta_{2}=32^{circ} ), as shown. What is ( n_{b} ) ? A. ( 0.66 ) B. ( 1.5 ) C. ( 0.72 ) D. ( 1.2 )

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