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DedPeter [7]
3 years ago
10

Plants and animals must have the element nitrogen because it is an important

Biology
1 answer:
lbvjy [14]3 years ago
3 0

Answer:

nitrogen fixing bacteria

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A person with swollen gums rinses his mouth with warm salt water,and the swelling decrease. Which has occurred
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The warmth of the water and the salt acts as anti biotic for swelling in the mouth. it takes out the infection which calms down the swelling
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4 years ago
Antennae development in ants is thought to be a trait controlled by maternal effect. In ants, zig-zag coils are dominant to curl
Schach [20]

Answer:

a. Her mother has zig-zag antennae.

b. Her brother has zig-zag antennae.

Explanation:

<u>Available data</u>:

  • Antennae development ⇒ controlled by maternal effect
  • Zig-zag coils are dominant
  • Curly coils are recessive
  • A female develops zig-zag coils

Maternal effect: Refers to the influence of the “environment provided by the mother” on the progeny phenotype. The mother´s genotype directly determines the progeny phenotype. Even though the progeny has a different genotype, it is irrelevant, as well as the father´s genotype or phenotype. This means that no matter what is the genotype of the offspring, all of them will express the same phenotype as their mother. The maternal effect is commonly seen in insects and might be seen in some mammals and plants.

So, if a female has zig-zag coils, this means that the mother also has zig-zag antennae and that all the brothers and sisters of this female ant have zig-zag antennae, independently of their genotype.

a. Her mother has zig-zag antennae ⇒ True. The trait is inherited from the mother.  

b. Her brother has zig-zag antennae ⇒ True. The whole progeny will express sig-zag antennae.

c. This female carries the zig-zag allele ⇒ Not necessarily.

d. This female's offspring will have zig-zag antennae ⇒ Depends on it´s genotype

3 0
3 years ago
Which type of feedback does your body normally operate through (Positive or Negative)? ​
Hitman42 [59]

Answer:

Negative

Explanation:

Acorrding to the scientific community mainly those from Emory it is said that your brain process things more negatively than positively this however is not a negative thing in fact it is said if you were happy all the time you would go insane

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3 years ago
Elephants , who are important grazers , are instrumental in transforming woodlands into grasslands . This has a tremendous impac
gizmo_the_mogwai [7]
Is B I hope this help you!:)
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what questions and answers lead you to the decision that an organism is from the kingdom Archaebacteria
Arte-miy333 [17]

Explanation: we will conclude this by the following characteristics:

1.organims that lack a proper nucleus.

2.they have membrane bounded organelles

3.they are tiny single cell oraganisms which cannot be seen by naked eye.

4.they are the oldest livinh organisms on earth

5.they are present in very harsh conditions like volcanic vents or at the bottom of the sea

5 0
4 years ago
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