Why or why not ? The biology of skin color

Answer:

No

Explanation:

No skin color is perfect in ANY environment. One of the uses of melanin (A primary skin pigment) is to absorb ultraviolet rays from the sun that initiate Vit. D production.

So an abundance of melanin is beneficial in an an environment with a large amount of sun to prevent an excess of Vit. D in the blood.

Inversely, less melanin is useful to an individual in an environment that gets little sun since there is not as much melanin to inhibit Vit. D production, and thus is less likely to have a Vit. D deficiency.

What is the next step in the process after a substrate enters the active site of enzyme?

10. Flattened, membrane-bound sacs that package and distribute proteins are called
the Golgi apparatus
True or false

What role do surface properties play in determining the lifespan of a flu virus?

THIS is a MULTIPLE CHOICE QUESTIONS ex: A.) B.) C.) D.)

Logan is a veterinarian who works for a marine science aquarium. He has been called in because
there was a bottlenose dolphin spotted in the bay that looked to have been caught in a fishing net.
Logan heads out to the beach to examine the animal. Sure enough, the net has been wound tight
around one of the dolphin's fins and looks to have cut off the circulation, causing possible tissue
damage. Logan wants to get the dolphin back to the aquarium to try to treat it. Given the type of
animal he is about to transport, which precautions would Logan MOST likely take so that the dolphin
makes it to the center alive?
A.) Logan would make sure that the dolphin is kept warm because it gets its temperature from its surroundings.

B.) Logan will want to make sure he takes another dolphin with him to keep the first one calm during
transportation

C.) Logan will want to make sure the dolphin's skin stays moist by keeping it in water while transporting.

D.) The dolphin will need to be anesthetized during transport so that it does not bite or hurt any handlers.

Which are examples of harmful mutations? Check all that apply.
one that causes a person to have a light patch of hair color
one that changes a mouse's eye shape but not its eyesight
one that allows a moth to blend into its environment
one that reduces a bean plant's ability to make food
one that increases the plants susceptibility to disease

Which diagrams best illustrate the daughter cells that result from normal mitotic cell division of this zygote

Which does an organism need to undergo cellular respiration?

Scientific explanations must always be based on ____

Why do
your heartrate change?

Look at the table you completed on the previous page. If you were to sequence the amino acids for a snapping turtle, which organism on the list would you predict the sequences would most closely resemble? Make sure to state an explanation of why you chose that organism, expressing this choice in terms of common ancestry.

Use the passage to answer the question.
3. In what way did the United States fail to keep the promise referred to in the quotation? (1 point)
The United States forced many Cubans to move to Guantanamo Bay.
The United States forced Cuba to accept an agreement that allowed the United States to intervene there.
The United States did not allow American companies to invest in Cuba.
The United States governed Cuba directly after the Spanish-American War ended.

How are igneous rocks classified?

A - size and shape
B- composition and grain size
C- texture and grain size
D - none of these

An uncharged atom of gold has an atomic number of 79 and an atomic mass of 197. This atom has ________ protons, ________ neutrons, and ________ electrons.
A. 79... 118... 79
B. 118... 79... 118
C. 118... 276... 118
D. 79... 34... 79

Which element has 1 valence electron in its outer shell and will react with a group 17 element in a 1:1 ratio? A. Beryllium B. Aluminum O C. Carbon O D. Potassium SUBNET​

5) What is the control center of a cell?

How does denaturation of a protein affect its function?.

28. ) _______ help chemical reactions occur by decreasing the activation energy.

a.) Enzymes
b.) Substrates
c.) Active sites
d.) Atoms
e.) Products

Why do we have different climate zones?

What ar the products of photosynthesis? Glucose and oxygen. hydrogen, oxygen, and carbon. carbon dioxide, water, and solar energy. oxygen, solar energy, and glucose

Deciduous trees have broad, flat leaves. Coniferous trees have needles. On a
summer day in New York, a leaf from which tree produces more glucose? Explain.

m ) M How many milliliters of 0.750 M H2PO4 are required to react with 250. mL of 0.150 M Ba(OH)2 if the products are barium phosphate and water?​

The greatest concentration of metals occurs in Earth’s _____.

I. Which of the following is NOT a main ingredient in fertilizer bags?
A. Nitrogen
B. Iron
C. Potassium
D. Phosphorus

PLEASE HELP WILL MARK BRAINLIEST
How would a flood be a limitation for synthetic polymers that rely on natural rubber in its production?

The diagram below shows part of one strand of a DNA molecule. What would the bases on the other strand be?PLEASE HELP ME PLEASE SOMEONE I AM IN DIRE NEED OF IT AND I AM ALSO GIVING A LOT OF POINTS FOR THIS ANSWER SO PLEEEASEEE

ASAP!! I am doing combined science higher can someone help me please

what happens to blood flow during exercise? 6 marker

What is the nucleic acid that contains the genetic information in most organisms

Which statement is a fundamental principle of the cell theory?*
•All cells have a cell membrane
•Eukaryotic cells are larger than prokaryotic cells
•Living organisms are composed of cells
•The genetic material in cells is DNA

In which stage of the cell cycle does the cell replicate its dna and carry out most of its life processes?.

The buildup of lactate in the muscles makes the muscle cells more acidic. This acidity makes the muscle worse at breaking down glucose, leading to weakness in the muscle. In what way do you think this process helps to prevent the overexertion of an organism?