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sukhopar [10]
3 years ago
11

Which of the following is true about a spinal reflex

Biology
1 answer:
Nadya [2.5K]3 years ago
5 0
<span> A. It is controlled by the brain. B. It is an involuntary response to a stimulus. C. It is a voluntary contraction of muscles. D. It increases blood flow to muscles.
</span>
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Which accurately describes the relationship between nutrients and life-forms in an estuary?
bija089 [108]

Answer:

C and D have the same answer?? wdym

Explanation:

8 0
3 years ago
What is the remaining ratio of alleles? 2. Have any alleles been selected against?
Luden [163]

The remaining ratio of alleles is about 3:1

<h3>What about alleles?</h3>
  • The term "allele" is employed to refer to a gene's alternate form or variants.
  • For each autosomal gene, one allele is inherited from each parent, and that we often group the alleles into groups.
  • Usually, we ask them as normal, wild-type, aberrant, or mutant alleles.
  • For instance, a dominant allele can overcome the characteristics of other recessive alleles;
  • These features are what determine an individual's eye and hair color, for instance .
  • In this instance, the dominant brown eye alleles outnumber the recessive blue eye alleles.
  • Any of two or more genes that may alternately appear at a certain location (locus) on a chromosome is referred to as an allele, also referred to as an allelomorph.
  • Alleles may exist in pairs or there could also be many alleles influencing how a certain trait is expressed (phenotype).
  • Each gene during a human has two copies (or alleles), one from each parent.
  • Alleles significantly contribute to the event of each person's unique traits.
  • Alleles are variants of the identical gene with a minor difference in the DNA base sequence.
  • An allele may be a gene's variable form.
  • Some genes exist during a number of forms, all of which share the identical genetic locus on a chromosome.
  • Because each genetic locus in humans has two alleles—one acquired from each parent—they are referred to as diploid creatures.

Learn more about alleles here:

brainly.com/question/23516288

#SPJ4

8 0
1 year ago
When you dig a water well for a house, you must pay per meter. Based on this image, how deep would you have to drill to reach an
Lerok [7]

14 is my best guess

6 0
3 years ago
Read 2 more answers
An oil spill happened at the Wild Harbor salt marsh on Cape Cod, Massachusetts in 1969. The oil has persisted in the ground sinc
Dima020 [189]
I would guess that the answer would be :'<span>These organisms dig more shallow burrows than they used to.</span>' If the crabs actively dig burrows, as many crab species do, and a layer of oil has persisted in the lower soil strata, it makes sense that the crabs would be reducing the depths of their burrows to avoid contact with the oil. The other possibility is that the crabs might might migrate to deeper waters, but this is less likely because the crabs would be evolved to utilise the intertidal zone. 
6 0
3 years ago
Both myoglobin and hemoglobin exhibit cooperative binding to oxygen. True or False
lys-0071 [83]

Answer:

False.

Explanation:

An Haemoglobin molecule  is made up of 4-polypeptides, with each of the polypeptide chain containing an haem group. These haem group can bind with one oxygen atom each.

T<u>he binding of the first oxygen atom  by the first haem group weakens the tertiary protein   structure  of  Quaternary structure  Hb, thus it makes it easier for the second Oxygen atom to bind faster, and the 3rd oxygen very fast and the 4th oxygen atom the fastest.These accelerated binding of the oxygen atoms, facilitated by the first binding O2, is called cooperative binding.It aids oxygen binding capacity and tranport functions  of Hb,</u>

<u />

<u>Myoglobin is an oxygen storage protein in  muscles, and not oxygen carrying molecule, It releases  stored O2 only in condition of low oxygen supply</u>.It has   one haem group in its molecule.Therefore its structural features can  not  carry out  cooperative binding.

6 0
3 years ago
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