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Nat2105 [25]
3 years ago
10

A person constantly comes in contact with pathogens that can infect body cells and cause disease. Which organ system is involved

in protecting the body from both infectious and noninfectious diseases? A. muscular system B. nervous system C. immune system D. reproductive system
Biology
2 answers:
zhenek [66]3 years ago
6 0
The answer is the immune system
vladimir2022 [97]3 years ago
4 0

Answer:

Immune system!

Explanation:

Did the study island!

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Two insect groups vary genetically by two genes. When put together,they were able to reproduce and produce offspring that could
nikitadnepr [17]
<h3>Your answer is D.</h3>

The insects are the same species.

<h3>Explanation:</h3>

A species is a group of similar organisms able to reproduce (to exchange genes and interbreed) only within the group. That means that organisms from different species could not exchange genes. Since mentioned insect groups are able to reproduce and produce offspring that could also breed, these groups belong to the same species. If they could not reproduce and produce offspring that could also breed, these groups would belong to the different species.

I hope I helped, and I always appreciate Brainliest!!! :)

8 0
3 years ago
Why did we need to measure the absorbance at two wavelengths during the beta-galactosidase lab?
Gnom [1K]

While the absorbance at 420 nm is related to the amount of o-nitrophenol produced, the absorbance at 600 nm is proportional to cell density, which aids in standardizing our estimations of enzyme activity.

<h3>Describe absorbance.</h3>

The amount of light absorbed by a solution is measured by its absorbance (A), often referred to as optical density (OD). The amount of light that may flow through a solution is called its transmittance.

<h3>How is the activity of beta-galactosidase determined?</h3>

The colorless ONPG substrate is changed by beta-Galactosidase into galactose and the chromophore o-nitrophenol, which results in a vivid yellow solution. The amount of substrate transformed at 420 nm can be calculated by measuring the solution's beta-galactosidase activity using a spectrophotometer or a microplate reader.

<h3>What is measured by the beta-galactosidase assay?</h3>

The -Gal Assay Kit gives users the tools they need to swiftly assess the amounts of active beta-galactosidase expressed in cells that have been transfected with plasmids encoding the lacZ gene.

learn more about absorbance here

<u>brainly.com/question/26830274</u>

#SPJ4

4 0
2 years ago
Which organ traps older erythrocytes so they will be removed from circulation?
Svetlanka [38]

Spleen

The spleen is located under the diaphragm and behind the stomach. It can get enlarged during an infection.

Explanation:

The spleen is a large lymph organ. It is highly vascularized and contains a meshwork that sieves out old and misshaped erythrocytes.  It acts as a quality control measure for red blood cells.  The organs has macrophages that engulf and digest the red blood cells that fail quality control and foreign matter. The spleen stores the iron the cell as bilirubin and is recycled yo make new blood cells in the red bone marrow.

The spleen also stores red blood cells hence your spleen helps you recover blood cells (and maintain the right blood pressure) when you lose a considerable amount of blood from a deep cut.

Learn More:

brainly.com/question/13562842

brainly.com/question/4473673

#LearnWithBrainly

4 0
3 years ago
Glycolysis is a part of cellular respiration that takes place in the absence of oxygen.
Marta_Voda [28]

Answer:

Explanation:

Glycolysis is an anaerobic process - it does not need oxygen to proceed. ... They follow glycolysis with the Krebs cycle and electron transport to make more ATP than by glycolysis alone. Cellular respiration that proceeds in the presence of oxygen is called aerobic respiration.

5 0
3 years ago
Why do plants provide bees, butterflies, hummingbirds, and other animals with nectar?
QveST [7]
Nectar is filled with all kinds of good nutrients that benefit the bees. Butterflies. Hummingbirds and other animals.
7 0
4 years ago
Read 2 more answers
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