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
Fynjy0 [20]
3 years ago
7

Give an account on ‘Cell theory’ .

Biology
1 answer:
stich3 [128]3 years ago
6 0

Answer:

In biology, cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells. Cells are the basic unit of structure in all organisms and also the basic unit of reproduction. ... Cell theory was eventually formulated in 1839.

You might be interested in
1. A cell does not need to use energy during
Mnenie [13.5K]

Answer:

The answer would be Diffusion because it does not require the use of energy

5 0
3 years ago
Identify one way in which the process of growth of a human embryo is similar to the process of reproduction in a single called o
iragen [17]

Answer:

The correct answer would be mitosis and binary fission.

The human embryo grows through the process of mitotic divisions through a parent cell divides into two equal sized daughter cells each of which contains identical genetic material.

Similarly, single-celled organisms reproduce asexually through the process of binary fission during a parent cell divides into two equal sized daughter cells each of which contains identical genetic material. Each daughter cell grows and matures to become an independent adult.

6 0
3 years ago
Which event most accurately describes cytokinesis?
Talja [164]
Cytokinesis is the process wherein actual division of the cell, including the cell membrane and the cytoplasm, from the parent cell to two daughter cells. The correct answer in this question is "the metaphase plate is the beginning area for cytokinesis" as the metaphase plate dictates the midpoint of the cell. A cell with a cell wall (plant cell, for example) cannot perform cytokinesis with a cleavage furrow but with a cell plate. Phragmoplast only develops in plant cells. Lastly, cytokinesis only starts after telophase.
8 0
3 years ago
Read 2 more answers
If a natural disaster caused all warbles to go extinct, why would the natural disaster not kill all living organisms?
likoan [24]

Answer:

Living organisms that are able to adapt to the environment (natural disaster) will increase in number while the ones such as warbles who can't adapt will die and go into extinction.

Explanation:

Natural selection can be defined as a biological process in which species of living organisms having certain traits that enable them to adapt to environmental factors such as predators, competition for food, climate change, sex mates, etc., tend to survive and reproduce, as well as passing on their genes to subsequent generations.

Simply stated, natural selection entails the survival of the fittest. Therefore, the species that are able to adapt to the environment will increase in number while the ones who can't adapt will die and go into extinction.

Additionally, due to genetic variation within populations, some living organisms have a better chance of possessing good or beneficial traits being passed from the parent organism to her offsprings which enables them to survive a natural disaster.

Hence, if a natural disaster caused all warbles to go extinct, the natural disaster may not kill all living organisms due to natural selection.

7 0
3 years ago
I need help with gentics stuff.
ANEK [815]
11 and 12 seem to be right :) For 13, only organisms which are homozygotic for a certain gene (aa) express a recessive phenotype.
14. This dna exchange between the homologous chromosomes is called crossing-over.   
15. geneticly linked or coupled, the phenomenon is known as genetic linkage
16. and 17. also seem all right :)
6 0
3 years ago
Other questions:
  • An example of a nonspecific defense provided by the skin is
    7·2 answers
  • The _______ in plants is directly responsible for absorbing light energy.
    5·2 answers
  • What is NOT an example of adheaion? Please help!!
    13·1 answer
  • Why is Darwin’s theory of Evolution by Natural Selection not ‘just a theory?’
    13·1 answer
  • Experimental studies reveal that double-stranded DNA can exist in three different helical forms known as A, B, and Z DNA. Why do
    9·2 answers
  • In some ecosystems, coyotes prey on white-tailed deer. If the population of white-tailed deer suddenly decreased, what would mos
    14·1 answer
  • Why do some water masses in subsurface oceans have little or no oxygen? a. Large carnivores deplete oxygen in subsurface oceans
    11·1 answer
  • According to scientific evidence, earth’s earliest atmosphere lacked oxygen. Over time, oxygen was added to the atmosphere.
    7·2 answers
  • A un hospital llega un hombre aproximadamente 25 años que desde hace unos días viene sintiendo unas picadas uno de los extremos
    10·1 answer
  • what technological advantages allow seafaring Arabs during the middle Ages to dominate the Mediterian Sea and trade with east Af
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!