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3 years ago

The cell structures that break down nutrient molecules and old cell parts are known as

Biology

2 answers:

Fofino [41]3 years ago

7 0

Answer: LYSOSOME

Explanation:

Vera_Pavlovna [14]3 years ago

5 0

Lysosomes break down nutrients and old cell parts

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The complement pathway is a critical mechanism for eliminating microbes, and is comprised of more than 30 proteins that are cons

BaLLatris [955]

Answer:

3. Antibody-independent pathways of complement activation rely on complement components that directly bind to microbial surfaces.

Explanation:

There are three pathways of complement activation:

The classical pathway.
The alternative pathway.
The lectin pathway.

The classical pathway is triggered by binding of C1 either to the pathogen surface or to antibody bound to the pathogen.

The alternative pathway is triggered by the spontaneous hydrolysis of soluble C3 to C3(H₂O) and initiates eventual deposition of C3 convertase on microbial surfaces.

The lectin pathway is triggered by the binding of mannose-binding lectin or ficolins to carbohydrate residues in microbial cell walls and capsules.

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3 years ago

Select the correct answer.

anyanavicka [17]

Answer:

I believe the answer is C

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3 years ago

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Which is equal to 7 hecto meters?

denis-greek [22]

Answer:7 hecto meters.

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3 years ago

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Mendel knew that the variations in the offspring generations resulted from his experiments because he

sasho [114]

Mendel was able to attribute the variation observed in the offspring of his experiment to the controlled fertilization process.

Mendel was able to control pollination and, thus, the fertilization process in the pea plants used for his experiment.

Mendel was able to effectively predict the outcome with self-pollination or cross-pollination with different results coming from each. Thus, he logically concluded that the variation observed in the offspring of his crosses is due to the fact that he controlled the fertilization process.

More on Mendel's experiments can be found here: brainly.com/question/3186121?referrer=searchResults

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2 years ago

Hunt and her team designed an experiment to test her hypothesis about the effect of BPA on mice. They administered daily doses o

katovenus [111]

Answer and Explanation: The figure below shows the doses of BPA administered to the female mice over time.

An experiment is used to determine cause and effect among variables. When the research is for the impact of a treatment, researchers randomly separate individuals in two groups:

Control Group doesn't receive any treament or a placebo or a treatment whose outcome is already known;
Treatment Group receives the treatment;

For the female mice on the image below, in the First Group is not injected any dosage of BPA, so they are the control group, while the others are treatment group.

The variables in a experiment are classified as independents or dependents:

Independent Variable is the cause;
Dependent Variable is the effect;

For the BPA research, since it is the effect of BPA over time on the mice's cells it is being investigated, dosage of BPA is the independent variable and time is the dependent variable.

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3 years ago