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jeka57 [31]
3 years ago
8

18. What is Mohs hardness scale

Biology
1 answer:
pishuonlain [190]3 years ago
6 0

Answer:

Mohs hardness scale is a scale comparing hardness of rocks. There are 10 marker rocks 1-10. They are used to find the relative hardness of the other rocks.

Explanation:

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The polar head of a phospholipid is made of _______ molecules. phosphate protein fatty acid carbohydrate
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The polar head of a phospholipid is made of phosphate. The polar head has a negative charge that is made up of phosphate molecules. This polar region attracts water and is positioned outward to interact with the water. 

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What is special about enzymes shape
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Hope this helps some!!

Explanation:

  • The shape of an enzyme is very important because it has a direct effect on how it catalyzes a reaction.
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3 years ago
A rooster with gray feathers is mated with a hen of the same phenotype. Among their offspring, 15 chicks are gray, 6 are black,
m_a_m_a [10]

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Alleles for feather colour exhibit incomplete dominance or co-dominance.

50% gray offspring + 50% black offspring

Explanation:

<em>It means that the alleles for feather colour in the hen exhibit incomplete dominance or co-dominance over one another.</em>

Assuming the allele for white colour is B, white colour will be b while the heterozygote Bb gives the gray phenotype.

Gray rooster + gray hen = 15 gray chicks, 6 black chicks and 8 white chicks.

15:6:8 is roughly 2:1:1 which is phenotypic ratio obtainable from crossing two heterozygous individuals as pointed out by Mendel.

Bb   x   Bb = 1BB, 2Bb, and 1bb

Crossing the gray rooster (Bb) with a black hen (bb):

Bb   x   bb = Bb, Bb, bb, and bb

          = 2Bb (gray):2bb (black)

50% of the offspring will be gray while the remaining 50% will be black.

7 0
3 years ago
1. A normal mammalian cell will shrink if it is placed into_________. (Assume all solutes are non-penetrating) A. pure water B.
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B. 50 mM glucose; E. 300 mM glucose

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The normal blood levels of NaCl = ~ 154 mM; therefore A, C and D will not cause any shrinkage.

The normal blood levels of glucose = ~ 3.9 to 7.1 mM; therefore water would move from the intracellular to the extracellular space since the solutes are 10x higher outside the cell, causing shrinkage of the cell.

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3 years ago
During cellular respiration, every living thing in this food web uses ______ gas and releases ______ back into the environment
nordsb [41]
Oxygen; carbon dioxide
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