The suns rays strike earth most directly at?

1 answer:

8 0

The earth equator since all the rays coming from the sun are perpendicular to the equator rather than the restaurants of the Earth.

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How are seeds different from spores?

sineoko [7]

A. Seeds have endosperm which provides for nourishment for a new plant, but spores do not have any stored food supplies.

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2 years ago

What mononmer is made up of a base, a surger, and a phosphate group ( 2 points )

Brums [2.3K]

To the best of my knowledge, there are only two and they would be ribose and deoxyribose

hope this helps if not just let me know

6 0

3 years ago

The buoyant force in Newtons at a point on the sphere is?

Sergeeva-Olga [200]

Answer:

I calculate the buoyancy force as: Volume of the sphere = Volume of the water displaced (Vdisplaced) = (4/3)πr3. Weight of the displaced water = Buoyancy force (B) = Vdisplaced× density of water.

I hope this is what you needed

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2 years ago

A certain restriction enzyme digest results in DNA fragments of the following sizes: 4,000 bp, 2,500 bp, 2,000 bp, and 400 bp. S

Paladinen [302]

Answer:

Smaller the size of the DNA fragment, farther it moves during electrophoresis. The sketch of the position of the fragments has been drawn in the figure below.

Explanation:

As we know DNA is a negatively charged molecule. So during electrophoresis the fragments move towards the positive electrode because opposite charges attract each other.

Different fragment move different distances according to their size during the electrophoresis. Smallest segment travels the largest distance in the gel medium while the largest one travels least distance.

In the question there are four DNA fragments with base pairs 4000, 2500, 2000 and 400 so the smallest segment with 400bp will be farthest from the starting point and the largest fragment with 4000bp will travel least distance in the gel medium. Their respective positions are shown in the figure below. The starting point is near the negative electrode.

8 0

3 years ago

Which layer of skin contains living cells, is vascularized, and lies directly above the hypodermis?

kicyunya [14]

Answer:

Dermis.

Explanation:

The skin is the outer most protective layer that differ in structure and composition of the vertebrates. The main function of skin is the regualtion, sensation and protection of the organism.

The skin is divided into different layer : epidermis, basement membrane dermis, and subcutaneous tissue. Only the dermis layer contains the living cells that are highly vascularized and present beneath the hypodermis. Dermis layer protect the body from the stress and strain.

Thus, the correct answer is option (2).

6 0

3 years ago