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VMariaS [17]
3 years ago
12

Early scientists were conflicted about the mechanism by which cells were created, with some scientists holding the viewpoint tha

t cells were spontaneously crystallized in what was known as free cell formation. Robert Remak discovered ways to fix and observe cell membranes in various stages of cell division. These findings led Rudolf Virchow to proclaim in 1855, Omnis cellula e cellula (every cell comes from another cell), thus completing the tenets of cell theory.
Biology
1 answer:
krek1111 [17]3 years ago
4 0

Answer: All cells come from preexisting cells.

Explanation:

The given paragraph is about cells develop from the preexisting cells. The doubling of the genetic material in the S-phase is the triggering mechanism for cell division. In the process of mitosis the genetic material get reduced. The daughter cells vary by the amount of genetic material they receive. This proves that the new cells form from the pre-existing cells.

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Why are all of the pigments not visible in a typical leaf?
igor_vitrenko [27]

The set of Wavelength is absorbed by pigment. So in a typical leaf some pigment can’t be visible.

Explanation:

There are mainly three types of key pigments in photosynthesis.  These three key pigments are Chlorophyll a, Chlorophyll b, and β-carotene. Those set of wavelengths which is not absorbed by pigment and finally it is reflected and that reflected light is what we see as a color.

The reason behind color of plant looking green because it contains huge amount of chlorophyll a and b molecule. It reflects the green light.

8 0
3 years ago
Please match the white blood cells with the statements that most accurately describe them to test your understanding of the beha
Artyom0805 [142]

Following are the statements:

1. Main phagocytes in circulation

2. Like eosinophils, they are involved in inflammation and allergic reactions

3. Phagocytic cells that leave circulation and differentiate into macrophages

4. Display no antigen specificity but are active against tumor and virally infected cells

Answer:

1. Neutrophils

2. Basophils

3. Monocytes

4. Natural killer cells

Explanation:

Neutrophils can be described as the most abundant type of white blood cells. They make up to 55%- 75% of the immune system.

Basophils can be described as white blood cells which are made in the bone marrow.

Monocytes can be described as white blood cells which are the largest and differentiate into macrophages and myeloid lineage dendritic cells.

Natural killer cells can be described as white blood cells which play a role in providing innate immunity.

8 0
3 years ago
Ictoria and the mambers of her immediate family have attached earlobes . what is her geno type?
White raven [17]
Say B is the genotype for example. If her whole family is attached, then she would be Homozygous Dominant. For example, BB.
6 0
2 years ago
The nurse finds that a patient has nocturia, bladder pain, and an enlarged prostate. the laboratory findings reveal a serum crea
MrRissso [65]
Prostatis, or inflammation of the prostate (elevated PSA), likely due to bacterial infection, hence the elevated white blood cell count. This is sometimes also referred to as benign prostatic hypertrophy (BPH).
8 0
3 years ago
Identify the cerebral cortex in the diagram of the brain below.
Lera25 [3.4K]

Answer:

A

Explanation:

The cerebral cortex can be described as the thin layer of the brain that covers  the outer part of the cerebrum. This layer is also made up of tightly packed neurons and can also be described as the wrinkly, outermost layer that surrounds the brain (the surface of the brain is not smooth but consist of folded bulges that is called gyri which create deep fissures called sulci). This increases the surface area and also the amount of information that is processed. It is also referred to as the gray matter and is also responsible for higher thought processes including speech and decision making

7 0
3 years ago
Read 2 more answers
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