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VARVARA [1.3K]
3 years ago
9

Which process does not require the presence of a physical substance in order to transfer heat?

Biology
1 answer:
Aneli [31]3 years ago
8 0
It’s radiation to transfer heat
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What is the complementary dna sequence to <br> atg atc cga atg agc gcc gat aag ttg cag tag
ehidna [41]

Answer

tac tag gct tac tcg cgg cta ttc gtc atc

Explanation:

6 0
2 years ago
How does a catalyst work? using these options...
Gelneren [198K]

Answer: D) By decreasing the activation energy of a reaction

A catalyst is a substance that speed up the rate of chemical reaction without affecting the product of the reaction. They only affect the rate of reaction not the yield of reaction.

Catalyst provide an alternative reaction pathway that has lower activation energy  than that of uncatalysed reaction. It increases the frequency of collision and because of these greater collision which lowers the activation energy of the reaction.


8 0
3 years ago
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How is polyploid is used in the field of agriculture?
GuDViN [60]
Polyploidy is a major force in the evolution of both wild and cultivated plants. ... Some of the most important consequences of polyploidy for plant breeding are the increment in plant organs
5 0
2 years ago
If a small droplet of ordinary fat molecules is suspended in water, the fat molecules form a "ball of spaghetti" with no particu
kolbaska11 [484]

Answer:

Option 1, a charged end and a noncharged end

Explanation:

Complete question

If a small droplet of ordinary fat is suspended in water, the fat molecules form a "ball of spaghetti" with no particular orientation. But if a droplet of phospholipid molecules is put in water, all the molecules point outward, toward the water. Phospholipids are forced into this orientation because phospholipids have _____

  1.  a charged end and a noncharged end
  2.  three fatty acid molecules, all pointing in different directions
  3.  two fatty acid molecules pointing in different directions
  4.  both a saturated fatty acid and an unsaturated fatty acid
  5.  two charged ends

Solution

The structure of phospholipids consists of the following groups and molecules –  

a) A glycerol molecule  

b) Fatty acids (2 in numbers) – It is hydrophobic as it is uncharged and non polar in nature

c) Phosphate group (with alcohol) – It is hydrophilic as it is negatively charged and polar in nature.  

When the phospholipids are placed in  water, the molecule rearranges itself in a way that the hydrophobic head face inside and the hydrophilic head face outside thereby forming micelles.

Hence, option 1 is correct

3 0
3 years ago
MANE WHAT DIS IS IM LOST !!
gizmo_the_mogwai [7]

Answer:

I'm not sure exactly what your supposed to do but a,b and c are all correct but d is false.

6 0
3 years ago
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