What functions must a membrane allow?

Biology

1 answer:

andreev551 [17]2 years ago

3 0

Answer:

They keep toxic substances out of the cell

Explanation:

They contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles

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Sweet pea plants have a diploid 2n chromosome number of 14.

pashok25 [27]

The sweet pea plants having a diploid 2n chromosome number of 14 produces F1 offspring with 14 chromosomes by the process of fusion of gametes each having n number of chromosomes.

<h3>What are diploid organisms?</h3>

Diploid organisms are organisms having two copies of each chromosome or 2n number of chromosomes

Diploid organisms undergo meiosis to produce haploid cells having n chromosomes.

Two haploid cells from each parent combine to produce offspring with 2n number of chromosomes.

Therefore, the sweet pea plants having a diploid 2n chromosome number of 14 produces F1 offspring with 14 chromosomes by the process of fusion of gametes with n number of chromosomes.

Learn more about diploid organisms at: brainly.com/question/11421336

5 0

3 years ago

A meal contains carbohydrate, fat, protein, vitamin D, calcium and iron. What happens to each of these substances in the body?

qwelly [4]

Answer:

They all started to get digest.

Explanation:

Digestion starts in the mouth and all the way to the small intestine. And, there are many enzymes and digestive jucies which help to digest spefic nutriton amoung them.

4 0

3 years ago

emily wants to know how green, blue and red color light affects plant growth compared to natural light. (Hint: what light affect

MArishka [77]

Red and blue colored lights are most effective for plant growth.

Plant Growth is the dependent variable and light color is the independent variable. The rest are control variables.

A Control variable is the part of the experiment that we keep the same throughout all of the test subjects. An independent variable does not depend on other variables and a dependent variable does.

Allow me to explain. When we perform an experiment, many factors that can change the results, For this reason, it is common practice to keep many of them the same for all test subjects (In this case for all of the plants). This way we know that if changes are measured, they were not caused by these variables. These are what we call control variables.

An independent variable does not depend on other variables to remain the same. For example, the species of plant would be an independent variable, given that a plant cannot change its species because of other factors.

A dependent variable does change according to other variables and is often what we try to measure. For this example given, the dependent variable is how much the plant will grow with each colored light.

Knowing that plants rely on light to produce the energy needed to grow, we can <u>hypothesize</u> that applying different colors of light will have an effect on plant growth. To test this, we can create an experiment where we use:

Soil
amount of water
amount of light
species of plant
length of experiment

As control variables.

One group of plants will have blue light, another green, and another red. We can identify the color of light as an independent variable.

Since what we seek to measure is plant growth, we identify this as our dependent variable and measure it for each plant after a set amount of time, to compare results.

With this, you can confidently identify the control, dependent, and independent variables and how to use them in your experiment.

To learn more about experiments try: brainly.com/question/17314369?referrer=searchResults