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
nekit [7.7K]
3 years ago
12

About 99% of the atmosphere is composed of

Biology
1 answer:
hichkok12 [17]3 years ago
5 0
Nitrogen and oxygen make up about 99%of the atmosphere. I'm not sure if it will help! But thats all I know.
You might be interested in
Name the following compound: Mg3(PO4)2
Nataly [62]
Magnesium Phosphate is the answer
3 0
2 years ago
Read 2 more answers
What Is a variation?
Mumz [18]
A change or a slight difference
8 0
3 years ago
A typical virus is made up of 2 parts. Check all that apply.
aleksandr82 [10.1K]

Answer:

C) Nucleic Acid

D) Capsid

Explanation:

A virus is structure that is dependent on a living host to replicate itself. Viruses are majorly pathogenic in nature and have a structure that is made up of two parts namely: nucleic acid and capsid.

The nucleic acid, which can either be RNA or DNA holds the genetic information of the virus while the capsid is a protein coat that enclosed and protects the virus' genetic material. The capsid is also used during the infection life cycle of a virus where it helps the virus to attach to receptor cells on the host's cell membrane.

8 0
2 years ago
Describe the steps in which a gene in passed from parent to offspring. Make sure to describe how the gene is duplicated, separat
Margarita [4]

Answer:

Mitosis occurs in somatic cells; this means that it takes place in all types of cells that are not involved in the production of gametes. Prior to each mitotic division, a copy of every chromosome is created; thus, following division, a complete set of chromosomes is found in the nucleus of each new cell. Indeed, apart from random mutations, each successive duplicate cell will have the same genetic composition as its parent, due to the inheritance of the same chromosome set and similar biological environment. This works well for replacing damaged tissue or for growth and expansion from an embryonic state. Because the genes contained in the duplicate chromosomes are transferred to each successive cellular generation, all mitotic progeny are genetically similar. However, there are exceptions. For example, there are genetic variations that arise in clonal species, such as bacteria, due to spontaneous mutations during mitotic division. Furthermore, chromosomes are sometimes replicated multiple times without any accompanying cell division. This occurs in the cells of Drosophila larvae salivary glands, for example, where there is a high metabolic demand. The chromosomes there are called polytene chromosomes, and they are extremely large compared to chromosomes in other Drosophila cells. These chromosomes replicate by undergoing the initial phases of mitosis without any cytokinesis (Figure 2). Therefore, the same cell contains thick arrangements of duplicate chromosomes side by side, which look like strands of very thick rope. Scientists believe that these chromosomes are hyper-replicated to allow for the rapid and copious production of certain proteins that help larval growth and metamorphosis

Explanation:

hope this helped!

7 0
2 years ago
DNA is made up of many smaller molecules called _____.
drek231 [11]
It’s B I think bro. Use a different app this one sucks
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which events are likely to be catastrophic to an ecosystem?Select the two correct answers
    7·2 answers
  • Charles
    8·1 answer
  • Please explain this statement that ---------- how life is a complex mesh work involving a perfect co-ordination of a vast majori
    9·1 answer
  • Seasonal variations in ocean temperatures can impact the populations of living organisms in the ocean. How would a phytoplankton
    9·1 answer
  • Please Help need this soon.
    7·1 answer
  • Por que se dice que los seres vivos son considerados sistema
    9·1 answer
  • g Two closely related species of plant (A and B) hybridize to form a new species (C). Species A is diploid and has 8 chromosomes
    10·1 answer
  • In geotropism, plants grow toward _____.<br><br> A)gravity<br> B)sun<br> C)other plants<br> D)light
    9·2 answers
  • You will need the following materials to build the model:
    8·1 answer
  • If the blood specimen from a dermal puncture is clotted before being mixed with the anticoagulant in the microcollection contain
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!