1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
katen-ka-za [31]
3 years ago
14

8. The heart is considered to be a part of which of the two systems listed below? A circulatory and integumentary C circulatory

and muscular B respiratory and muscular D skeletal and circulatory
Biology
1 answer:
liubo4ka [24]3 years ago
8 0

I found this i hope it helps

About the Heart and Circulatory System

The circulatory system is composed of the heart and blood vessels, including arteries, veins, and capillaries. Our bodies actually have two circulatory systems: The pulmonary circulation is a short loop from the heart to the lungs and back again, and the systemic circulation (the system we usually think of as our circulatory system) sends blood from the heart to all the other parts of our bodies and back again.

You might be interested in
Write a brief description of the Nervous system.
bazaltina [42]
The nervous system coordinates it's actions by sending signals throughout the body
6 0
3 years ago
What is the function of the enzyme RNA polymerase during transcription?
allsm [11]

Answer:

RNA polymerase is an enzyme that is responsible for copying a DNA sequence into an RNA sequence, duyring the process of transcription.

8 0
3 years ago
What kind of tissue provides plants with the first line of defense against damage and disease?
sergeinik [125]


The best answer - dermal tissue.

Dermal tissue in plants forms the first line of defense against physical damage and infection from the outside world.

Dermal tissue covers the outside of the plant, except in woody shrubs and trees, which have bark. The most common cell type in dermal tissue is epidermal cell. Generally, a thin waxy layer called a cuticle covers the epidermal cells and protects them.

Other cells in the dermal tissue are guard cells that surround the stomata, which are openings in the leaves. Gases enter and leave the dermal tissue through the stomata.




3 0
4 years ago
Put the following steps in the correct order from 1-9
storchak [24]

Answer:

transcription of mRNA from DNA

small ribosomal subunit binds to mRNA

initiation complex formed with addition of large ribosomal subunit

translocation

codon recognition (non-initiating site)  

peptide bond formation

ribosome reads a stop codon

polypeptide chain is released from the P site

ribosomal subunits dissociate

Explanation:

The above describes the process of translation in the ribosome. After transcription of DNA to mRNA, the mRNA is taken to the ribosome to undergo translation, here the mRNA binds to the small ribosomal subuits and to other initiation factors; binding at the mRNA binding site on the small ribosomal subunit then the Large ribosomal subunits joins in.

Translation begins (codon recognition; initiating site) at the initiation codon AUG on the mRNA with the tRNA bringing its amino acid (methionine in eukaryotes and formyl methionine in prokaryotes) forming complementary base pair between its anticodon and mRNA's AUG start codon. Then translocation occurs with the ribosome moving one codon over on the mRNA thus moving the start codon tRNA from the A site to the P site, then codon recognition occurs (non-initiating site again) which includes incoming tRNA with an anticodon that is complementary to the codon exposed in the A site binds to the mRNA.

Then peptide bond formation occurs between the amino acid carried by the tRNA in the p site and the A site. When the ribosome reads a stop codon, the process stops and the polypeptide chain produced is released and the ribosomal subunits dissociates.

6 0
3 years ago
Which ecosystem is more healthy, tundra, grassland, or desert? why?
Kamila [148]

Answer:

Grassland

Explanation:

Healthy grasslands are important habitats for birds and other wildlife, and also places where we farm and ranch. They provide food, cover, space and safe access to water for both wildlife and livestock.

4 0
3 years ago
Other questions:
  • How many pairs of legs do insects have?
    7·2 answers
  • Generally, single-celled plants may reproduce by
    13·2 answers
  • The burning of fossil fuels releases which of the following gases into the atmosphere?
    5·2 answers
  • Which of the following is an advantage of sexual reproduction? A. It increases genetic variety. B. Less energy is required. C. L
    5·2 answers
  • The first signs of cellular differentiation occur in the blastocyst. Why is cellular differentiation important for the developme
    13·2 answers
  • Question 3: Explain how you and your classmates are all the same at the DNA level and
    15·1 answer
  • Which of the following terms describes the following:
    5·1 answer
  • I hope you can help me <3
    15·2 answers
  • What are chromoplasts and their functions? ​
    5·2 answers
  • Alcohol is not considered a ________ because it does not support the regulation of body functions or tissue repair or rebuilding
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!