Answer:
Cytoplasmic streaming occurs due to the motion of organelles attached to actin filaments via myosin motor proteins. However, in Chara corallina, the organization of actin filaments is highly ordered. Actin is a polar molecule, which means that myosin only moves in one direction along the actin filament.
Explanation:
The diaphragm is the part of the microscope that adjusts the amount of light going through the slide. Believe it or not, some specimens are easier to see when the diaphragm lets less light in. If you use the view that allows you to see the specimen being magnified, the diaphragm is the part that is directly under your field of view. It has a lever that can be moved right or left to adjust the light coming through the slide.
Using the bacterial capsule slide, on 100x (make sure the slide is centered and focused), is it easier to see the bacteria when the diaphragm is completely open, or mostly closed?
Choose one:
a. open
b. closed
Answer:
a. open
Explanation:
It is true that it will often be favorable to close the microscope diaphragm so that the sample is viewed more efficiently. However, these will be rare cases and you are more likely to have to open the diaphragm to be able to view.
Ideally, you should try to adjust your view with the diaphragm open first, and if you are unable to adjust the light correctly, you should close the diaphragm to see if the view looks better.
A company that manufactures a popular multivitamin wanted to determine whether their multivitamin had any side effects. For its initial study, the company chose 2000 individuals to take one of their multivitamin tablets per day for one year. Scientists from the company surveyed the participants to determine whether they had experienced any side effects. What was wrong with the company’s study on side effects?
Answer:
The correct answer is - there is no control group used.
Explanation:
In any research or trial of medicine requires to test if there are any side effects associated with the medicine or supplements. In this type of research, there must be two groups one that gets treatment and the other group gets no treatment during the trial.
The group of subjects that get the treatment is the experimental group and the second group of subjects, is the control group which is used to compare the result.
In the given study or research, the control group is not used.
The study did not use a control group.
Scientific research especially medical research usually have two groups they study.
That is, the subjects or experimental units are placed into any of these two groups:
Treatment/experimental group: This group receives the treatment, which in the case stated in the question, the treatment is the multivitamin.Control Group: No treatment (multivitamin is given), rather a placebo in form of a the multivitamin is given.Therefore, what was wrong with the study conducted by the compony is that they did not use a control group which would enable them compare results gotten from the treatment group.
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What would happen if there’s a blockage in the urethra? aka structure D?
Answer:
Pretty sure it's choice c, stop the release of urine from the body.
Explain how the grunion depends on the changes in tide for the survival of its species.
Which of the following does not affect a molecules ability to cross a cell membrane?
(WILL MARK BRAINLIEST!!!!!! PLEASE HELP ;_;
A. Polarity of the molecule
B. Concentration inside and outside of the cell
C. Size of the molecule
D. Energy of the cell
Answer:
Energy of the cell
Explanation:
because other three affects the concentration of the cell
option D is correct because diffusion does not need energy
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What words describe this organism , grass.
Answer:
Its green
Straw-like
Can be long or short
Can be cut
It's thin
Can be moist
Best of luck
Explanation:
How would a cell send a protein to another cell? Discuss the process starting from the Nucleus and ending in the other cell.
Answer:
Explanation:
Suppose that you have a very precious piece of information. Let’s imagine that this piece of information is a blueprint. In fact, it’s not just a blueprint for a house, or a car, or even a top-secret fighter jet. It’s a blueprint for an entire organism – you – and it not only specifies how to put you together, but also provides the information that enables every cell in your body to keep functioning from moment to moment.
Sounds important, right? You’d probably want to keep information this valuable in a secure spot, perhaps in a protected vault where you can keep an eye on it. In fact, that’s exactly what eukaryotic cells do with their genetic material, placing it in a membrane-enclosed repository called the nucleus.
Eukaryotic DNA never leaves the nucleus; instead, it’s transcribed (copied) into RNA molecules, which may then travel out of the nucleus. In the cytosol, some RNAs associate with structures called ribosomes, where they direct synthesis of proteins. (Other RNAs play functional roles in the cell, serving as structural components of the ribosome or regulating activity of genes.) Here, we’ll look in a little more detail at the structure of the nucleus and ribosomes.
[Do all cells have just one nucleus?]
The nucleus
The nucleus (plural, nuclei) houses the cell’s genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins. Inside the nucleus, chromatin (DNA wrapped around proteins, described further below) is stored in a gel-like substance called nucleoplasm.
Enclosing the nucleoplasm is the nuclear envelope, which is made up of two layers of membrane: an outer membrane and an inner membrane. Each of these membranes contains two layers of phospholipids, arranged with their tails pointing inward (forming a phospholipid bilayer). There’s a thin space between the two layers of the nuclear envelope, and this space is directly connected to the interior of another membranous organelle, the endoplasmic reticulum.
Nuclear pores, small channels that span the nuclear envelope, let substances enter and exit the nucleus. Each pore is lined by a set of proteins, called the nuclear pore complex, that control what molecules can go in or out.
If you look at a microscope image of the nucleus, you may notice – depending on the type of stain used to visualize the cell – that there’s a dark spot inside it. This darkly staining region is called the nucleolus, and it’s the site in which new ribosomes are assembled.
What are the two main functions of the muscles
This excerpt is an example of which type of text
feature?
ut the
essor
arine
and
piles
foreword
introduction
references
acknowledgments
Answer:I think its a sidebar but is there multiple choice or a written answer?
Explanation:
Answer:
I see that it is on edge so the answer is acknowledgements
Explanation:
I got it right on edge
How does the usable nitrogen enter our bodies?
Answer:
by consuming plants
Explanation:
Answer:
in the AIR WE BREATHE
Explanation:
name the three types of tissues in animals
Answer:
There are four types of tissues found in animals: epithelial tissue, connective tissue, muscle tissue, and nervous tissue.
Explanation:
HELP PLEASE IT'S DUE IN LIKE 1 HOUR
How can you tell if facilitated diffusion is occurring? Active Transport?
Answer:
The interpretation of the particular situation is outlined in the following portion of the clarification.
Explanation:
Active transport, as even the course progresses, seems to be an active or evolving process using ATP, whereas assisted diffusion would be a gradual transport which doesn't use ATP. That was because successful transportation takes place against both the concentration gradients, although facilitated dissemination takes place across the concentration gradients or difference.Answer:
The interpretation of the particular situation is outlined in the following portion of the clarification.
Explanation:
tagalog folk song in puzzle
The term for fungi that decompose dead organic matter is
A. saprobic.
B. infectious.
C. parasitic.
D. pathogenic.
Answer:
The answer is A Saprobic
Explanation:
The decomposers are called Saprotoph, they feed on the remains of dead organic matter.
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Please answer me fast as possible,
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Answer:
The answer is: 3 tennis balls because there will be 4 ping pong balls used for every model and 12/4=3
Explanation:
Answer:
Here ya go!
Explanation:
You would need only 2 tennis ball to complete the model. By splitting each tennis ball in half you will now have 4 parts. I have already glued the 12 ping pong ball together in a circular shape. I would then just glue the parts of the tennis balls on the ping pong mass is reference to the picture shown.
Contrast the perceptions of Frederic Clements and Henry Gleason approached the process of ecological succession and the limits between communities.
Answer:
Fredric Clements and Henry Gleason both published papers addressing the process of ecological succession in the early 20th century. Both men developed theories concerning succession, and they differed greatly. Clements’ Plant Succession An Analysis of the Development of Vegetation (1916) stated the succession is a universal process of formation development. He believed through his research and observations succession was a series events. Clements stated that the types of vegetation in an area are directly related to climate. The climate is in complete control of the form and variety of vegetation that occurs during plant succession. Christopher Elliot’s paper describes this idea perfectly, “For Clements, climates are like genomes, and vegetation is like an organism whose characteristics its genome determines” (2007). This quote demonstrates how firmly Clements believed that climate was the main driving factor in what type of vegetation would arise during succession. The final step in vegetation succession he referred to as a climax. Another major point in Clements paper is that vegetation grows, as what he denoted as a unit. Meaning the entire vegetation develops together as a single unit like an organism. This is known as the super-organism theory. Clements theorized that some type of organized process was needed for plant succession proceed and be successful. Clements described the process as complex. When Gleason’s paper The Structure and Development of the Plant Association was published a year later in 1917 he casted some doubts on Clements paper. Gleason and Clements had similar views on the understanding of plant succession. However, Gleason favored a more simplistic view of plant succession. He disagrees with units being organisms and the series of events with a climatic end. He also believed that there was more than just one factor that affected ecological succession. Gleason did not believe that climate alone was responsible for the types of vegetation, but other variables could be equally responsible. Gleason developed the individualistic concept in contrast to Clements who theorized the community acted as a whole. However, this does not mean that Gleason dismissed the community as a factor in plant succession, but just recognized individuals’ greater impact. This point was described in Crawley and et.al’s paper that revisited Gleason’s theory (2002). Both Clements and Gleason’s approaches to define plant succession are similar in their core beliefs, but differ greatly in the details. The holistic theory versus the individualistic theory differs because of where the researcher focused and how they choose to examine the large concept of plant succession.
Explanation:
question 8 lollllllllll
Answer:
A
Explanation:
The plants are killed because the salt water solution is
Answer:
plants by accumulating chloride and sodium ions that can be toxic as they accumulate in plants. They can also create a kind of chemical drought where water in roots can diffuse out into the saltier soil.
Explanation:
hope this helps
What type of macromolecule is this?
Н
0
Н
Н.N
с
N
С - С
N
сн.
Н
CH,
Н
Н
ОН
SH
Answer:
Protein
Explanation:
There is a Sulfur atom
What is collar bone?
Answer:
The collarbone is a long, slender bone that runs from the breastbone to each shoulder. You can feel it at the top of your chest, just below your neck. Tough bands of tissue (ligaments) connect the collarbone to the breastbone and shoulder blades.
Explanation:
Answer:
Touch you shoulder, that bone is you collarbone
Explanation:
which statement best describes the function of nucleic acids?
Answer:
not sure
Explanation:
For Forensics Please Help Thanks!
Estimate the approximate time of death for the following situations:
A body was found completely relaxed.
A body is found exhibiting rigor in the chest arms face and neck.
A body is found with most muscles relaxed except for the face.
A body is found with rigor in the legs but no rigor in the upper torso.
Answer:
C
Explanation:
A Body is found with most Muscles Relaxef except for the face... because your brain take sometimes to go dead after you have passed away or can be keeping alive if its added into a Jar of water
What’s the difference eve between atp and adp?
( WILL MARK BRAINLIEST
a. Phosphate group
b. The 5 carbon sugar
c. The nitrogen base
d. ADP is more energetic than ATP
Answer:
d
Explanation:
ATP stands for Adenosine Tri Phosphate, and that third phosphate is bonded to the other two with a very high energy bond, so a lot of energy is released when that bond is broken. When the third phosphate is removed from ATP, you get ADP, which stands for Adenosine Di Phosphate.
Answer:
d
Explanation:
how does gravity create the orbits of other planets
Answer:
Newton realized that the reason the planets orbit the Sun is related to why objects fall to Earth when we drop them. The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.
which is true about scientific knowledge?
It is never reliable
It is rarely proven wrong
It always becomes a fact
It is open to change
This structure is important in converting ammonia and filtering waste out of the body.
Answer:
kidney
Explanation:
Answer:
kidneys
Explanation:
The kidneys filter waste from the body and remove ammonia through excretion.
In which do impulses move fastest?
neurons that carry dull pain
myelinated neurons
nonmyelinated neurons
all neurons.
Answer:
I think it's myelinated neurons
Explanation:
Because the dull pain progresses slowly but myelinated neurons act quickly like neurons that stretch the arm when it hit a hot object
what is most air polution caused by
The cholera bacterium produces toxins that cause chloride ions to be secreted into the small
intestine. How does this affect the water potential of blood in the intestinal capillaries and the
intestinal contents?
Correct answer is water potential in blood in capillary raised, intestinal contents lowered
why is this so
Answer:
Osmosis occurs where the movement of water move from a region of high water potential to a region of low water potential.
The water potential in blood capillaries need to be higher than the water content in intestinal so that the water will move from blood to intestine which cause diarrhea.
Osmosis occurs when the movement of water moves from a region of high water potential to a region of low water potential.
The water potential in blood capillaries needs to be higher than the water content in the intestine so that the water will move from the blood to the intestine which causes diarrhea.
Which substance is absent from fresh dialysis fluid?The dialysis fluid contains no urea, so all of the urea diffuses from the blood into the dialysis fluid from the high concentration of the blood to the lower concentration in the dialysis fluid.
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CAN SOMEONE PLEASE HELP ME?
If the primary consumer in the pyramid has 5,000 kcals of energy, how much energy would the secondary consumer gain from consuming the primary
consumer?
A 500 kcals
B 30 kcals
C 700 kcals
D 5 kcals
Answer:
i believe it would be 500kcals
