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
iVinArrow [24]
3 years ago
10

The moon’s changing shape is caused by...

Biology
2 answers:
KiRa [710]3 years ago
8 0
It’s rotation around the earth
Pavel [41]3 years ago
6 0
The moon spinning around the earth
You might be interested in
What does the cell nucleus contain?
Ulleksa [173]

A nucleus cell contains chromosomes among other things.

6 0
2 years ago
In what way does translation change information?
lesya [120]
Answer - A. From a N.A code to an A.A code.

Reason - The DNA sent a instructions aka nucleic acid (code) to make amino acid which is important for our muscles.
5 0
3 years ago
Read 2 more answers
Define the 3 signals for activation and the 3 outcomes of the complement system.\
sp2606 [1]
* More than 40 proteins and glycoproteins involved in the complement system are synthesized by the liver, macrophages, epithelial cells, they are present in the blood in plasmatic form, membrane, some have an enzymatic activity, regulator or membrane receptorThese are elements of the humoral innate immune response, they fight infections, purify immune complexes and apoptotic bodies.
<span>There are indeed three ways to activate the complement:</span>
Classical pathway: Activated by Immunoglobulins in immune complexes, aggregated Immunoglobulins, DNA, CRP, apoptotic bodies .......it involves nine fractions, starting with C1, then C4, C2, C3, to form a classical C5 convertase, then, activation of C5, C6, C7, C8, C9.

Alternative pathway: activated by polysaccharides (bacterial endotoxin), vascular wall poor in sialic acid, aggregated IgE ...C3b like is the first component in the alternate channel cascade, it will create an amplification loop, and form an alternative C5 convertase.

Lecithin pathway: Activated by mannose, fucose (carbohydrate of microorganisms)The first component is the complex MBL / MASP1 / MASP2: "mannose-binding protein": works according to the same principle as the complex C1 of the classical way (MASP2 cleaves the C4 and the rest of the cascade is equivalent to that of the classical way).

the three ways have the same outcome: A C5 convertase (formed by one of the pathways) cleaves C5 into C5a and C5b: C5b is deposited far from other fractions on the antigenic surface. The fixation of C5b in the cell is followed by that of C6, C7, C8, and C9 (9 molecules of C9): formation of the membrane attack complex (MAC) ==> Death of the cell by osmotic shock
8 0
3 years ago
The fruit fly Drosophila melanogaster is an important model system for studying inheritance in animals and genetic control of an
Snezhnost [94]

Answer:

The correct answer is "strengths: inexpensive, easy to culture, short life cycle, large number of offspring; weaknesses: invertebrate model, some diseases such as immunological cannot be modelled, anatomical features are very different from humans"

Explanation:

The fruit fly <em>Drosophila melanogaster</em> is one of the most used animal model for genetic and biomedical studies. There are many advantages of using Drosophila as model, including that it is very inexpensive to handle, it is easy to culture, it has a short life cycle allowing to observe the changes in phenotype very quickly and its large number of offspring allows to include several repetitions per trait in a study. However, there are some weaknesses of using Drosophila to study human biology. First, obviously the fruit fly is very different from humans, it is an invertebrate and its anatomical features are very different, which makes impossible to model some disorders such as immunological diseases.

7 0
3 years ago
Gaps in the myelin sheath are called A. synapses. B. nodes of Ranvier. C. interaxons. D. ganglia.
Annette [7]
Most likely synapses because it’s gaps
6 0
3 years ago
Other questions:
  • WILL MARK BRAINLIEST!!! PLZ ANSWER ASAP!!! 10 POINTS! ♥♥♥
    14·1 answer
  • Energy in most ecosystems must flow through autotrophs because ______.
    9·2 answers
  • Which differentiates the key chemical properties of nucleic acids, DNA and RNA? A. Hydrogen bonds B. Functional group C. Hydroca
    8·2 answers
  • Are modern whales different from whales of the past?
    7·1 answer
  • The less common type of plant is the _____.
    11·1 answer
  • The following diagram shows a simple circuit.Which labeled part is an example of a load?
    7·1 answer
  • Types of cell that udergo the process of mitosis
    10·1 answer
  • PLEASE HELP! ASAP!
    7·1 answer
  • What is the function of valves between the heart chambers?
    9·1 answer
  • I NEED HELPPPPP PLEASE XD
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!