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
Korvikt [17]
3 years ago
8

2. What are the limitations of the geocentric model that led to the creation of the heliocentric

Biology
1 answer:
kirill115 [55]3 years ago
3 0

Answer:

The model cannot explain why planets appear to go backward and make loops in the sky. Explanation: As an example, the observation of the planet Mars shows that there are times where it seems to be moving forward at first, then back, and then forward again

Explanation:

You might be interested in
Qué no tienen los virus que sí tienen
juin [17]

Answer:

Viruses today are not considered living things, since a comparison of archaeobacteria and living things in general cannot have autonomous reproduction methods, if they need to be replicated in a DNA or RNA replication medium foreign to them.

This means that their DNA or RNA cannot replicate by itself, that is why they need to be detected in cells or bacteria (forming bacteriophages) in order to assemble in the DNA of these living beings and replicate in a "hidden" way.

Explanation:

There are cells that recognize the invasion of certain viruses so they self-destruct and do not allow replication of it in the replication of their own DNA, RNA, but there are others that do not, that is why there are viral diseases such as HIV.

On the other hand, in the case of bacteria, they form bacteriophages or form mutations in the DNA, RNA of these living prokaryotic organisms, resulting in more pathogenic or potentially dangerous microorganisms.

5 0
3 years ago
Which organelle is used for carrying out photosynthesis
Masja [62]
Chloroplasts
<span>On the cellular level, the reactions for photosynthesis occur in organelles called chloroplasts . Blue-green algae carry-out the photosythesis reactions in the cytoplasm.

Plz give brainliest.</span>
4 0
3 years ago
Read 2 more answers
2. Bone
rodikova [14]

Osteoporosis causes bone density to decrease due to decreased osteoblast activity, increased osteoclast activity, and external factors like long-term medication. Option B. All choices are potential causes.

<h3>What are the factors that promote osteoporosis?</h3>

Let us first review what the bone cells are and their functions,

• Osteoprogenitores → in charge of osteocytes production

• Osteocytes → maintain the matrix

• Osteoblasts → Synthesize and secrete osteoid matrix that will later calcify

• Osteoclasts → Phagocytic cells in charge of osseous resorption and bone modulation.

Osteoporosis is a no-symptoms disease -silent- that causes a decrease in the bone mineral and mass density and might change the bone structure.

Osteoporosis weakens the bone until it breaks. So this affection becomes evident when a fracture occurs.

Several factors lead to osteoporosis development. Among them, we can mention,

  • genetic factors,
  • habits factors (lifestyle),
  • hormonal alterations,
  • drugs/medication

The increased rate of bone resorption is the major mechanism by which osteoporosis occurs. It deteriorates bone structure and decreases bone density.

Bone resorption and deterioration might be caused by

  • a decrease in osteoblast activity, leading to the decrease in osteoid matrix formation and calcification,

  • an increase in osteoclast activity, enhancing the activity of these phagocytic cells.

Other external factors also increase the probability of developing osteoporosis. Some of them are,

  • long-term medications (for instance, those used in cancer treatment)
  • excessive alcohol consumption and smoking
  • sedentary lifestyle
  • poor diet

According to this framework, the potential causes of the Osteoporosis are Decreased osteoblast activity, Increased osteoclast activity, Secondary to external factors like drugs/cancers.

Hence, <u>option B is correct</u>, All choices are potential causes.

You can learn more about osteoporosis at

brainly.com/question/8806251

brainly.com/question/9389623

brainly.com/question/7246059

#SPJ1

3 0
2 years ago
No food source of nucleic acids, they are all created by ____________?
abruzzese [7]
They are made up of <span>purines and pyrimidines. hope this helped!</span>
8 0
3 years ago
The maltose molecule can be broken down into two individual glucose molecules with the help of an enzyme produced within a cell.
S_A_V [24]

D. Increasing the pH within the cell.

Maltose is also known as malt sugar and commonly found in germinating grains. Thus, maltase is enzyme that split the disaccharides maltose into two glucose molecules and can be found within the small intestine of vertebrates which includes human and animals. However, increase in pH of the cell will generally result in incomplete loss of enzyme activities thereby slowing down the enzyme reactions.

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the similarities between simple diffusion and facilitated diffusion
    6·1 answer
  • Cells within an organism can be very different from one another. for example, human red blood cells are filled with hemoglobin,
    12·2 answers
  • HELP ASAP PICTURE ATTACHED IN QUESTION!!!!!!!!!!!!
    13·1 answer
  • What characteristics of life distinguishes a fire and a flowering plant?
    10·1 answer
  • Your pet snake would be found in what kingdom?
    7·2 answers
  • What is the defining characteristic of an acid?
    9·1 answer
  • Approximately 55%of an adult female body weight is water if a woman body contains 38 kg of water what is the woman's total weigh
    15·1 answer
  • Many bacteria exist as free-living cells until a critical number of cells have been produced. Once these large numbers of cells
    10·1 answer
  • Which condition is inherited as a dominant allele?
    12·1 answer
  • Explain why the development of the seed was an important event in the evolution of
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!