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Artyom0805 [142]
3 years ago
12

Gene regulation in eukaryotes is regulated by

Biology
1 answer:
VLD [36.1K]3 years ago
4 0
<span>repressors as well as by transcriptional activators.</span>
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In humans brown eyes are dominant to blue eyes. A cross between a heterozygous brown-eyed individual and a homozygous blue-eyed
sertanlavr [38]

Answer:

50%

Explanation:

trust me im good at this

4 0
3 years ago
Scurvy is a disease that until the nineteenth century was common among sailors and others whose diets were deficient in vitamin
alina1380 [7]
<h2>Scurvy </h2>

Explanation:

(a) Collagen is the major structural component of cartilage,bones and tendons

  • The basic unit of collagen is tropocollagen and each tropocollagen consists of three coiled left handed polypeptide chains called α chains
  • Generally each α chain consists of a repeating tripeptide sequence called: G-X-Y
  • Here G represents glycine; X represents proline and Y represents hydroxyproline
  • Rigidity of collagen molecule is due to presence of proline and hydroxyproline
  • Hydroxylation of proline is catalysed by prolyl hydroxylase enzyme which use ascorbate,α ketoglutarate and oxygen
  • α ketoglutarate is oxidatively decarboxylated to form carbon dioxide and succinate
  • Sequence of events leading from a dietary vitamin C deficiency to symptoms such as bruising and breakdown of supporting tissues includes: tissue levels of ascorbic acid is low;  enzyme prolyl hydroxylase is inactive;  proline is not hydroxylated;  the triple helix is inadequately stabilized; collagen breaks down;  defects in tissues that depend on collagen ; tissues that depend on collagen are subject to breakdown and bruising

(b) Sailors are no longer susceptible to scurvy because fresh fruits which are the source of vitamin C source are available now

British sailors called "limeys" to this day,this term reflects the British navy's use of limes

5 0
2 years ago
Plant life first appeared on land during which of the following periods?
marusya05 [52]

The correct answer is B. Ordovician period

Explanation:

Plants are mainly multicellular organism that depends mainly on photosynthesis to obtain energy, this includes a wide variety of species such as grass, flowering plants, trees, shrubs, etc. Additionally, plants are considered as one f the two major divisions or kingdoms along with animals. In terms of history, it has been determined first land plants appear during the mid-Ordovician period around 470 million ago, although organisms that were the origin of land plants developed in water in previous periods, also by the Devonian period a wide variety of plants have emerged with features that are still part of plants nowadays. Therefore, plant life first appeared on land during the Ordovician period.

3 0
3 years ago
What kind of energy is the energy of motion
Gnom [1K]
"Mechanical Energy is the energy of motion of an object"

Hope this helps!
5 0
2 years ago
Read 2 more answers
A scientist is examining a tissue sample under a microscope. The tissue has a good blood supply, and material secreted by the ce
Artyom0805 [142]

Answer:

Connective Tissues

Explanation:

According to my research on studies conducted by various medical professions, I can say that based on the information provided within the question this scientist is most likely looking at Connective Tissues. These are tissues in which material secreted by the cells is fills up the spaces between the cells, thus connecting or binding otherwise separate tissues or organs. Which is what the scientist seems to be describing.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

7 0
3 years ago
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