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postnew [5]
3 years ago
10

Which organism appeared on earth first, the moss or yeast? How do we know?

Biology
1 answer:
crimeas [40]3 years ago
7 0
I believe it’s yeast
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How does the overuse of antibiotics lead to resistant strains of bacteria? (D)
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Answer:

it's C

Explanation:

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Which two cell parts are most likely found in both types of cell? cell wall and cell membrane lysosome and vacuole vacuole and c
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Plant and animals cells they are both eukaryotic cells, both have membrane bound organelles.They have nucleus, cytoplasm, cell membrane, mitochondria, endoplasmic reticulm, golgi apparatus, lysosomes, peroxisomes and ribosomes. Plant have cell walls and chloroplast animal do not

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A recessive trait is expressed only in an individual who is
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The correct answer is B - homozygous
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3 years ago
Which statements describe steps taking place in the nitrogen cycle shown above?
astraxan [27]

The statements that describe steps taking place in the nitrogen cycle are

  • Many biotic and abiotic factors play a role in recycling nitrogen ( A )
  • Farming practices and chemicals lead to a build-up of nitrates in the soil ( E )

Nitrogen cycle is biochemical process whereby nitrogen is converted to various chemical forms as it passes through the atmosphere, Marine and terrestrial ecosystems .

Nitrogen cycle undergoes four ( 4 ) important processes which are :  

  • Fixation
  • Ammonification
  • Nitrification and
  • Denitrification

Hence we can conclude that The statements that describe steps taking place in the nitrogen cycle are :

Many biotic and abiotic factors play a role in recycling nitrogen and

Farming practices and chemicals lead to a build-up of nitrates in the soil

Learn more about Nitrogen cycle : brainly.com/question/1380063

5 0
2 years ago
The gene for petal color in a flower has incomplete dominance, so that individuals with two A1 alleles (A1A1) are black, individ
Verdich [7]

Answer:

The probability of getting a mottled offspring is 0%. There is no A2 allele involved in the cross.

Explanation:

<u>Available data</u>:

  • The gene for petal color in a flower has incomplete dominance
  • Two A1 alleles (A1A1) express black color
  • Two A2 alleles (A2A2) express white color
  • One of each allele (A1A2) express mottled color

In a cross between two black flowers, there is no allele A2, there are just two alleles A1. So, the cross is:

Parental)    A1A1    x    A1A1

Gametes)  A1   A1       A1   A1

Punnet Square)     A1         A1

                   A1    A1A1     A1A1

                   A1     A1A1     A1A1

F1 Phenotypes: 100% black flowers

F1 Genotype: 100% A1A1

There are 0% of probabilities of getting a mottled offspring.

7 0
3 years ago
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