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
nika2105 [10]
2 years ago
8

Identify the ways that oxygen is added to the atmosphere. Select all that apply.

Biology
1 answer:
Alekssandra [29.7K]2 years ago
4 0

Answer:

the second one

Explanation:

Its photosynthesis, the process of oxygen in plants

You might be interested in
Why are diploid cells abbreviated 2n and haploid cells abbreviated 1n​
Ganezh [65]

Answer:

Diploid cells abbreviated 2n and haploid cells abbreviated 1n​ because 'n' represents number of chromosome present in the cell. In haploid cells the number of chromosome is half in number while in diploid cells the number of chromosome is double so that's why haploid is abbreviated as 1n and diploid is abbreviated as 2n.

Diploid cells are present in body cells while haploid cells are found in sex cells.

4 0
3 years ago
Because it is difficult to excrete iron once it is in the body, iron balance is maintained primarily through absorption. The iro
Rzqust [24]
<h2>The given statement is true</h2>

Explanation:

Iron absorption occurs in the duodenum and upper jejunum of small intestine

  • At physiological pH ferrous iron is rapidly oxidized to the insoluble ferric form
  • Gastric acid lowers the pH in the duodenum which enhances the solubility and uptake of ferric iron
  • Once iron gets inside the enterocyte it can be stored as ferritin;Ferritin is a hollow spherical protein which helps in storage and regulation of iron levels within the body
  • Ferritin molecule have ferroxidase activity which helps in the mobility of Fe2+ out of the enterocyte by ferroportin
  • Transferrin is the major iron transport protein which transports iron through blood
  • Fe3+ binds to transferrin so Fe2+ transported through ferroportin must be oxidized to Fe3+
  • Fe2+ needs to be oxidized first so that it can be transported through ferroportin
  • Once iron gets inside the cell it can be used for various cellular processes
6 0
3 years ago
Label the flower will give brainliest
QveST [7]

Answer:

1&2 stamen

3.petal

4.sepal

5.stigma

6.ovary

7.egg

8.ovule

8 0
2 years ago
Read 2 more answers
How much of a cell’s life is taken up by MITOSIS based on your data? 100=(16/36)*100
nordsb [41]
<span>All living things are made up of cells, and depending on how complex the organism is, it may have one cell, like a bacterium, or trillions of cells, like humans. The question is, how does a fertilized human embryo with one cell develop into an adult with 5 trillion cells? The answer is in a process referred to as cell division. A single fertilized human egg cell will divide to produce two cells. The two cells have the same genetic information as each other and the parent cell. The cells will continue to divide until trillions of cells are produced. This is how a fertilized egg grows into a baby, and then an adult. This division of cells is referred to as mitosis.</span>
3 0
2 years ago
Explain the differences between eukaryotic and prokaryotic cells.
Andrei [34K]

Explanation:

Comparing prokaryotes and eukaryotes

All life on Earth consists of either eukaryotic cells or prokaryotic cells. Prokaryotes were the first form of life. Scientists believe that eukaryotes evolved from prokaryotes around 2.7 billion years ago.

The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is where eukaryotes store their genetic information. In prokaryotes, DNA is bundled together in the nucleoid region, but it is not stored within a membrane-bound nucleus.

The nucleus is only one of many membrane-bound organelles in eukaryotes. Prokaryotes, on the other hand, have no membrane-bound organelles. Another important difference is the DNA structure. Eukaryote DNA consists of multiple molecules of double-stranded linear DNA, while that of prokaryotes is double-stranded and circular.

5 0
2 years ago
Other questions:
  • Carol saw a streak of light across the night sky; she called it a shooting star, what did she actually see? (10 Points)
    12·2 answers
  • You are cooking macaroni and cheese and while pouring the pasta into the colander you splash scalding water on your arm. the are
    11·1 answer
  • When wearing a sterile gown and gloves, why should you not fold the arms with the hands in the axilla?
    12·1 answer
  • Does anyone know the answers?
    13·1 answer
  • a chart that shows all the possible combinations of alleles that can result from a genetic cross is called a(n) __________
    13·1 answer
  • Explain why a circulatory system is important in meeting the needs of all cells throughout an animal's body
    14·1 answer
  • A client reports sharp and stabbing chest pain that worsens with deep breathing and coughing. A cardiac cause to this pain is ru
    10·1 answer
  • Q.18. During which period did the first trilobites appear?
    7·2 answers
  • HELPPPP
    14·1 answer
  • PLEASE HELP ASAP!!!! WILL GIVE BRAINLIEST!!!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!