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
posledela
3 years ago
12

Who dicovered the cell theory ​

Biology
2 answers:
hammer [34]3 years ago
5 0
Matthias Schleiden, Theodor Schwann, and Rudolf Virchow were the main contributors to cell theory.
Romashka [77]3 years ago
4 0

Answer: Matthias Schleiden and Theodor Schwann

Explanation:

You might be interested in
A ____?___ allele exhibits its phenotype when it is present on both the chromosomes.
faltersainse [42]
A recessive allele is shown in the phenotype 
3 0
2 years ago
Which part of the plant cell provides protection and structural support
adell [148]

Answer:

cell wall provides protection and structural support

6 0
3 years ago
The muscular system is made up of Multiple choice question. all the muscles plus the nerves attached to them. all the muscles, l
umka2103 [35]

Answer:

all the muscles.

Explanation:

The muscular system is composed of all muscles in the body. The main function of the muscles is to produce movement in different parts, voluntary or involuntary, creating equilibrium. Muscles are made of myocytes. There are three types of muscles: smooth muscle,  skeletal muscle, and myocardium.

  • The smooth muscle is formed by fusiform cells, mononucleated, and no transversal striations. There is a protein contraction system, but not as organized as the one of the skeletal muscle.  

Smooth-muscle can be found in organs, vessels, veins, and arteries. It provides sustained contractions, slow and rhythmical, but not voluntary.  

  • Skeletal muscle is the most abundant muscle in vertebrates, constituting the somatic musculature. It proportionates motion to extremities and digits and is responsible for the position and posture of the individual. It is also involved in eye movements, respiration, mastication, deglutition, and phonation. It moves the tongue, the superior esophagus, and the pharynx.  

The skeletal muscle is innervated by axons of the motor neurons coming from the CNS. The contraction of the skeletal muscle is voluntary and fast.  

Cells composing the striated muscle are significantly long and multinucleated. They arrange in bundles, where cells are parallel to each other.  

  • Myocardium tissue is more similar to the striated tissue than to the smooth one. However, there are some differences between them. Cardiac cells are cylindrical and smaller, with ramifications. Cardiac cells only have one nucleus, and occasionally there can be two. Actin and myosin filaments are arranged just as the skeletal ones, and the contraction of cardiac cells is molecularly very similar to the skeletal

5 0
3 years ago
How do you show the presence of a trait in a pedigree?
zubka84 [21]
To show he presence of a trait you would need to follow it through multiple generations in a pedigree.
6 0
3 years ago
Over 95% of incoming UV-B radiation is absorbed in the stratosphere. Please select the best answer from the choices provided
kramer

Answer:

True

Explanation:

The stratosphere is the layer of the earth’s atmosphere which is above the troposphere and below the mesosphere.

The stratosphere contains about 90 percent of the ozone layer. The stratosphere is made up of ozone layers which helps in the absorption of about 95 percent of the ultraviolet rays from the sun and converting to heat.

This is the reason why depletion of the ozone layer found in the stratosphere gives rise to global warming.

5 0
3 years ago
Other questions:
  • C. What is cell differentiation?<br> d. How are cell differentiation and morphogenesis similar?
    14·1 answer
  • Help please and thank you
    5·1 answer
  • Who was george mendel and what was his greatest contribution to genetics?
    9·1 answer
  • the muscular system and the skeletal system are two different organ systems, but they’re often referred to jointly as the muscul
    12·2 answers
  • Select the correct answer. George has several plants in his garden. Once in a while, he adds fertilizer to the soil. The leaves
    8·1 answer
  • What are the students observation and inference before he starts his investigation
    14·1 answer
  • When Engelmann exposed photosynthetic algae to light in the presence of aerobic bacteria, he found that some wavelengths of ligh
    9·1 answer
  • Scientists around the world have been working for decades on perfecting the process of nuclear fusion in the lab.
    15·1 answer
  • 15 POINTS ANSWER FAST -- Choose the correct description of a comet.
    5·1 answer
  • A musk ox and the Alstroemeria flower have physical structures and organs that have similar functions. Provide two examples of s
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!