1. Phagocytosis is a complex process that can be affected by many different things. State a hypothesis as to something that you believe might affect phagocytosis in Tetrahymena. Be specific as to how you believe it might affect phagocytosis. 2. What are the independent and dependent variables of your hypothesis?
Independent: ____________
Dependent:___________
3. What is a negative control you should use to rule out alternative explanations for a positive result?
4. In Parts 2 and 4, you measured the diameter of the micronucleus using fluorescence microscopy and electron microscopy. How do the measurements compare? Which of the two types of microscopy above do you believe was most accurate? Why?

Answers

Answer 1
Answer:

Phagocytosis queries are given detailed in the following way

Explanation:

1.Phagocytosis is a process wherein a cell binds to the item it wants to engulf on the cell surface and draws the item inward while engulfing around it.Phagocytosis differs from other methods of endocytosis because it is very specific and depends on the cell being able to bind to the item it wants to engulf by way of cell surface receptors. Phagocytosis won’t happen unless the cell is in physical contact with the particle it wants to engulf.

2.A hypothesis states a presumed relationship between two variables in a way that can be tested with empirical data. ... The cause is called the independent variable; and the effect is called the dependent variable.

Independent and Dependent Variable Examples. In a study to determine whether how long a student sleeps affects test scores, the independent variable is the length of time spent sleeping while the dependent variable is the test score. You want to compare brands of paper towels, to see which holds the most liquid.

3.A negative control is a control group in an experiment that uses a treatment that isn't expected to produce results. A positive control is a control group in an experiment that uses a treatment that is known to produce results.

A negative control is part of a well-designed scientific experiment. The negative control group is a group in which no response is expected. It is the opposite of the positive control, in which a known response is expected.

These two controls, when both are successful, are usually sufficient to eliminate most potential confounding variables: it means that the experiment produces a negative result when a negative result is expected, and a positive result when a positive result is expected.

4.Electron microscopes differ from light microscopes in that they produce an image of a specimen by using a beam of electrons rather than a beam of light. Electrons have much a shorter wavelength than visible light, and this allows electron microscopes to produce higher-resolution images than standard light microscopes.Microscopes are used to produce magnified images. ... light microscopes are used to study living cells and for regular use when relatively low magnification and resolution is enough. electron microscopes provide higher magnifications and higher resolution images but cannot be used to view living cells.

Fluorescence microscopy is used


Related Questions

Trình bày con đường chuyển sang nội kí sinh của giun tròn ?
Describe the major differences between the ecological niches of humans and cockroaches. Are these two species in competition? If so, how do they manage tocoexist?
Approximately 99% of the microbes in the intestines are obligate anaerobes. We have plenty of blood vessels that can bring oxygen to the tissues of the intestines. Why would there be obligate anaerobes within these areas? A. The bacteria in the intestines are protected from exposure to the oxygen in the tissues by the lining of the intestines. B. The bacteria consume all the oxygen in the tissue areas brought by the blood vessels, creating an anaerobic environment. C. While the blood vessels supply oxygen to the tissues of the intestines, the inner area where the bacteria reside is NOT supplied with blood/oxygen. Since it's deep within our bodies, there's no chance for oxygen to get into these inner areas of the intestinal tube, creating a highly anaerobic environment. D. The aerobic microbes are outcompeted for nutrients in these areas by the anaerobic microbes.
All of the following statements about glycolysis are true except: A) Glycolysis has steps involving oxidation-reduction reactions. B) The enzymes of glycolysis are located in the cytosol of the cell. C) Glycolysis can operate in the complete absence of O2. D) The end products of glycolysis are CO2 and H20. E) Glycolysis makes ATP exclusively through substrate-level phosphorylation.
Can you organize these terms that describe the different kinds of cell division?

Which of the following are adaptations of plants for photosynthesis?A. thylakoid membranes stacked into grana
B. broad, flat leaves
C. stomata for gas exchange
D. xylem vessels for water transport to the leaves. E. All of these are adaptations for photosynthesis.

Answers

Answer:

I think it's (E) but I'm not sure

Amir observes Wave 1 and Wave 2 crashing into each other at two different intervals. His experiments produce Wave 3 and Wave 4. Amir records his data in a table. What is the best statement about the data collected in Amir’s table?

Answers

the best announcement about the data collected on Amir’s desk could be Wave three resulted from positive interference, and Wave 4 resulted from adverse interference.

what's constructive & detrimental interference?

constructive interference takes place wherein the traces (representing peaks), move over each other. In different words, whilst waves are in segments, they intrude constructively. unfavorable interference occurs whilst waves are completely out of segment a top lies on the midpoint of two waves.

Why is it known as adverse interference?

In reality, at all factors, the 2 waves exactly cancel each other out and there is no wave left! this is the unmarried maximum extraordinary component of waves. The sum of waves can be less than either wave, by myself, and might even be zero. that is referred to as damaging interference.

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Answer:

D

Explanation:

Wave 3 resulted from constructive interference, and Wave 4 resulted from destructive interference.

Why is meiosis important for organisms?It creates gametes and allows for genetic variation among organisms.
It produces genetically identical cells.
0 It provides a means of asexual reproduction.
O It allows for cell and tissue repair

Answers

The correct answer is A. It creates gametes and allows for genetic variation among organisms.

Meiosis is the process of cell division in which a single cell divides into four daughter cells. The genetic constitution of the daughter cells reduces to the half as compared with the parent cells. While crossing over, an exchanging of genetic material is passed between chromosomes and that allow variations to happen.

Choose from the list the molecules necessary for every living thing on earth to survive. Select one or more: a. Lipids b. Carbohydrates c. Phosphate d. Nucleic Acids e. Proteins f. Oxygen ( :

Answers

Final answer:

Every living thing requires lipids, carbohydrates, nucleic acids and proteins for survival and proper functioning. These are the biological macromolecules that carry out crucial functions such as energy provision, genetic instruction, and various metabolic reactions.

Explanation:

All living things require certain molecules to survive and function. These molecules include Lipids, Carbohydrates, Nucleic Acids, and Proteins. Lipids are fats that provide long-term energy storage and insulation. Carbohydrates are the body’s main source of energy. Nucleic Acids such as DNA and RNA contain the genetic instructions for the development, function, growth, and reproduction of living organisms. Proteins perform a vast array of functions within organisms, including catalyzing metabolic reactions, DNA replication, responding to stimuli, and transporting molecules from one location to another. Phosphate and oxygen, while also essential to life, are technically not molecules but atoms or ions involved in various biological processes.

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Answer:

CHHOSE

Explanation:

THE ABC

Now that you have come up with an equation that describes the relationship between amounts of different nucleotide bases in DNA, can you use it to predict the amounts of all four nucleotide bases when you only know the amount of one type of base? Approximately 21% of the human genome is comprised of nucleotides containing C. Given this information, calculate the percentage of the human genome that is comprised of nucleotides containing G, T, and A. (a) _____% of the human genome is comprised of G.(b) _____% of the human genome is comprised of T.

(c) _____% of the human genome is comprised of A.

Enter your answer as three numbers separated by commas (example: 12, 26, 32).

Answers

Answer:

The correct answer will be- 21, 29, 29

Explanation:

In a DNA sequence, the nucleotide base pairs on one strand of DNA are  complementary to the base pair on other strand of DNA.

According to the Chargaff rule, Adenine binds Thymine and Cytosine binds Guanosine which shows that the amount of A will equal T and the amount of G will equal C.

Therefore, when the amount of C is 21%, then the amount of G will be 21%.

To find amount of AT= 100-GC

                              AT= 100-42

                                AT= 58%

So, AT/2= 29% each

Thus, A=T= 29%

          G=C=21%

The movement of tectonic plates in two locations is described below:Location A: Tectonic plates move away from each other
Location B: Tectonic plates collide and one plate moves beneath the other

Which statement is most likely correct?

Magma may rise and form volcanoes in both locations.
There is no chance of earthquakes in the two locations.
Subduction happens in Location A but not in Location B.
Seafloor spreading happens in Location B but not in Location A.

Answers

Answer:

For Which statement is most likely correct? is Magma may rise and form volcanoes in both locations.

I hope it helps you....

Answer: magma may rise and form in both locations

Explanation: