lab reports of onion cell

Answers

Answer 1

Answer:

you gotta show the onion cell if you want this to be answered


Related Questions

6/9 in decimal.



please help 100 points

Answers

Answer:

.66666666667

6 continues to repeat.

fraction can be reduced to 2/3

Use calculator or write out long hand

Vasopressin works on

Answers

Answer:

To treat diabetes insipidus, which is caused by a lack of this naturally occurring pituitary hormone in the body. And used to treat or prevent certain conditions of the stomach after surgery or during abdominal x-rays.

How are meiosis and mitosis similar?



A.They both produce diploids.

B.They happen at the same time.

C.They both produce sex cells.

D.They both produce new cells.

Answers

Answer:

D.They both produce new cells.

Explanation:

Meiosis and mitosis are both processes of cell division; however, they have many differences. Meiosis occurs in sex cells and produces haploids that can be fertilized. Mitosis occurs in body cells and produces diploids that replace old or damaged cells. Still, both processes result in the creation of new cells.

Answer:

D) They both produce new cells!

Explanation:

Dont forget to give a thank you, and to rate my answer!

1. ¿Cuáles son las células que contiene la retina?​

Answers

Answer:

Células fotorreceptoras: Son los conos y los bastones. Transforman los impulsos luminosos en señales eléctricas.

Células bipolares de la retina. Conectan las células fotorreceptoras con las células ganglionares.

Células amacrinas. ...

Células horizontales. ...

Células ganglionares de la retina.

are oxygen and glucose products in cellular respiration?

Answers

Answer:

no the oxygen and glucose are used to produce ATP in cellular respiration

What is your opinion about climate change ?

Answers

A scientific consensus on climate change exists, as recognized by national academies of science and other authoritative bodies. The opinion gap between scientists and the public in 2009 stands at 84% to 49% that global temperatures are increasing because of human-activity.

5. The major functions of carbohydrates irſclude
A. Structure framework. B. Storage C. Both Aan B
D . None of these​

Answers

Answer:

D

Explanation:

used to provide energy to the body

A solid reactant is placed into a beaker of a warm water. The liquid vigorously bubbles as the solid dissolves into the solution. What will most likely happen if the temperature of the liquid is slightly reduced?
More bubbles will be produced because the solution is becoming more concentrated.
Fewer bubbles will be produced because of fewer collisions of reactant molecules.
The solid will get smaller at a faster rate because of more collisions of reactant molecules.
The solid will get larger at a slower rate because precipitate is coming out of the solution.

Answers

Answer: Fewer bubbles will be produced because of fewer collisions of reactant molecules.

Answer:

B: Fewer bubbles will be produced because of fewer collisions of reactant molecules.

Afferont neurons
a.transmit sensory input to the CNS
b.are multipolar neurons
c.have many dendrites and a single long axon
d.are found only within the brain and spinal cord

Answers

Answer:

a.transmit sensory input to the CNS

Explanation:

Afferent neurons will take input from your muscles, skin etc. and send it to your CNS (usually via spinal nerves).

Complete the sentences on the control of the cell cycle with the correct terms. After S phase ____________ appear to share a common centromere.

Answers

Answer:

After S phase sister chromatids appear to share a common centromere.

Explanation:

The cells of the different organisms go through different periods during their life, each one characteristic and well differentiated. Before the mitosis process, during the S phase of the cell cycle, the chromosomes replicate, so that at the time of initiating cell division in humans, each of the 46 replicated chromosomes will have two chromatids joined by the centromere, each one of them represents a functional chromosome. Each sister chromatid of a chromosome secretes a daughter cell, as do the other 45, and together they will make up the diploid "cluster" of 46 chromosomes from the new cell. In other words, each chromosome is made up of two chromatids that come together at a point called the centromere. One chromatid contains a condensed chromatin molecule and the other has another identical chromatin molecule, the result of DNA replication, which is why we talk about a sister chromatid chromosome. Each chromatid has two arms of equal or different length.

what's the target cells of melatonin?​

Answers

Explanation:

The suprachiasmatic nucleus appears as a target of melatonin in mammals.The pineal hormone may thus be involved in a feedback loop of the mammalian photoneuroendocrine system.

Which of the following is a benefit of dams?

A. They impede fish migration and spawning

B. They provide a source of energy

C. They increase the sediment load of waterways


D. They divert water from ecosystems

Answers

A. They impede fish migration and spawning

In which process do producers use chemi-
cal energy and make food?
A chemosynthesis
B fermentation
C glycolysis
D photosynthesis

Answers

Answer: D, Photosynthesis

Explanation:

photosynthesis is the process plants use to make food :)

Genes a and b are 10 map units apart, b and c are 20 map units apart, and a and c are 30 map units apart. If a triple heterozygote is testcrossed, among 1,000 progeny, how many are expected to result from double crossovers if there is no interference?
а. 10;
b. 20;
c. can't be determined
d. 30;
e. 60;

Answers

Answer:

20 ( B )

Explanation:

Given data:

a and b are 10 map units apart

b and c are 20 map units apart

a and c = 30 map units apart

condition ; Triple heterozygote testcrossed

number of progeny = 1000

Determine the number of double crossover result

P( crossover between a and b ) = 10/100 = 0.1

P( crossover between b and c ) = 20/100 = 0.2

p( double crossover ) = 0.1 * 0.2 = 0.02

hence number of double crossovers = number of progeny * 0.02

                                                              = 1000 * 0.02 = 20

What trait are narcissists likely to have that is associated with leader emergence but not effectiveness

Answers

Answer:

Agreeableness.

Explanation:

Agreeableness is the trait that narcissists likely to have which is negatively corelated and is associated with leader emergence but not effectiveness. The tendency toward self-interest would attract the person into follow his or her own goals rather than the interests of their group or company. The term Narcissism originated from Greek mythology, where a young man whose name is Narcissus fell in love with his own image reflected in a pool of water so that's why selfness and self interests refers to Narcissism.

The skin is protected by the action of cells that arise from bone marrow and migrate to the epidermis. Which cells serve this function?

Answers

Answer:

Langerhan's cells

Explanation:

The Langerhan's cells arise from the bone marrow and migrate to the epidermis. The Langerhan's cells are the body's first line of defense and play a significant role in antigen presentation. They need special stains to be visualized and are primarily found in the stratum spinosum. These are the mesenchymal origin obtained from CD34 positive stem cells of bone marrow and are part of the mononuclear phagocytic system.

Which term refers to a variable that is dependent on another variable during an experiment? O A. Responding variable O B. Random variable C. Independent variable O D. Manipulated variable​

Answers

Answer:

c. independent variable

Explanation:

#carryonlearning

Answer:

Responding Variable is the

Explanation:

3. The DNA double helix is stabilized by hydrogen bonds between:

Answers

Answer:

Between Dioxide and Ribonuse Acid

Explanation:

hope it helps

Answer:

The structure of the DNA helix is stabilized by van der Waals forces, hydrogen bonds between complementary organic bases (a base pair), and hydrophobic interactions between the nitrogenous bases and the surrounding sheath of water

explain the importance of taking named precautions before blood transfussion can be done?​

Answers

Answer:

To minimize the chance of an adverse reaction during a transfusion, health care practitioners take several precautions. Before starting the transfusion, usually a few hours or even a few days beforehand, the person is cross-matched with the donor blood (not done for transfusions of plasma or platelets).

Precautions are necessary for blood transfusion because
There are chances of getting exposed to fatal diseases like hepatitis, AIDS and many other diseases.
And avoid the reactions between antigen and antibodies, which leads to rejection of transfused blood.

Good luck

Regards
BLACKSHARK

Which of the following requires constant agonist-antagonist muscle contractions?
Core integration
Postural development
Dynamic balance
Neuromuscular strength

Answers

Answer:

Postural development

Explanation:

The agonist muscles are sets of muscles responsible for causing joint motion, whereas antagonist muscles are muscles that directly opposite agonist muscles (i.e., antagonist muscles generate an opposing joint torque to the agonist muscles). In a given movement, agonist muscles exhibit concentric contractions while antagonist muscles show eccentric contractions in order to stabilize the joint. Postural development is achieved by concerted adjustments of dorsal muscles and ventral muscles. The dorsal muscles are activated when the body sways forward and the muscle fascicles shorten. During backward sway, these muscles lengthen, while ventral muscles are primarily activated.

Dynamic balance is the condition that requires constant agonist-antagonist muscle contractions.

The agonist-antagonist muscle contraction is the movement where one muscle contracts while the other muscle is relaxing or lengthening. The muscle contracts are agonist whereas the muscle that relaxes is the antagonist here.

Core integration: In such conditions, the constant movement of muscle contraction and relaxation does not require. It is a specific movement and increased stability of the movements.Postural development: continuous development and growth of postural muscles comprising the nervous systemDynamic balance: It would be the ability to balance in motion or changing positions. In this case, muscles require constant both agonist and antagonist contractionsNeuromuscular strength: motor commands according to the central nervous system to the ability to move in the nervous system, hence it does not require constant muscle movements.

Thus, the correct answer is - Dynamic balance.

Learn more about dynamic balance:

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Earth science includes the study of all the following except: Select one: a. land. O b. water. O c. atmosphere. O d. wildlife. ​

Answers

Answer:

c. atmosphere

Explanation:

the atmosphere is not part of the Earth's surface

In steps 1, 2, and 3, you will use a Punnett square to predict

Answers

Answer:

I don't get the question.

Explanation:

What is a group of microscopic unicellular organisms

Answers

Protists are a diverse collection of organisms. While exceptions exist, they are primarily microscopic and unicellular, or made up of a single cell. The cells of protists are highly organized with a nucleus and specialized cellular machinery called organelles.

Short-term mechanisms for regulating blood pressure include regulating peripheral vascular resistance and cardiac output through:________-

Answers

Answer:

Dilation or constriction

Explanation:

Short-Term mechanism for regulating blood pressure include regulating peripheral vascular resistance and cardiac output through dilation or constriction of the blood vessels while on the other hand, long-term mechanism for controlling of blood pressure done by the renin-angiotensin system. Brains stem is the part of the brain that is responsible for the controlling of blood pressure in the body.

Predict what will happen to the concentration of pyruvate, NADH and H+ when the Krebs cycle is stopped by arsenic

Answers

Answer: Pyruvate would increase, NADH would decrease, and intermembrane H+ would decrease as well.

Explanation:

Glycolysis would raise pyruvate, but the Krebs Cycle would not produce NADH, decreasing it. No protons (H+) will be pushed into the intermembrane gap, lowering its H+ content and raising its pH.

What is Kreb's cycle?

The tricarboxylic acid (TCA) cycle, commonly referred to as the Krebs cycle or the citric acid cycle, is the primary route that cells use in order to acquire energy and is an essential component of aerobic respiration. The cycle transforms the oxidative potential of acetyl coenzyme A (acetyl CoA) into the reductive potential of nicotinamide adenine dinucleotide (NADH).

The synthesis of ATP via the Krebs cycle is disrupted when arsenic is present because it prevents pyruvate from being converted into acetyl coenzyme A (acetyl-CoA). In addition to the effects described above, arsenic also prevents glucose uptake at the cellular level, as well as gluconeogenesis, the oxidation of fatty acids, and additional acetyl-CoA formation.

Learn more about Kreb's cycle, here:

https://brainly.com/question/13153590

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Prokaryotes and eukaryotes are similar in all of these aspects except
A. having all four types of macromolecules.
B. the size of their cells.
C. having at least one cell.
D. the presence of DNA

Answers

Answer:

D its D its D its D ddddddddddddddddd

The answer is The presence of DNA

why do proteins not pass through plasma membranes

Answers

Answer:

because protein molecules are very large in molar masses

1. What features are located medial to the cranium and the mandible. Identify the category here.
2. How many individual items are included in this category?

Answers

The features that are located medial to the cranium and the mandible are:teeth,tongue, lips, chick hard andsoft palate,

   2. There is a total of six individual items in this category.

The human skull is made up of two parts, the cranium, which contains the face and the brain and the only movable bone called the mandible or lower jaw.

The features that are medial to the cranium and the mandible are those structures that are nearer to the mid-line.

The above mentioned features works together to provide the following functions of the cranium:

protection of the delicate structures including the brain, eye and the inner ear.maintaining patency of the nasal passage enabling breathing.the movement of the mandible allows chewing.

Learn more here:

https://brainly.com/question/20273756

.

Why Darwin is known as father of evolution? Discuss how evidences against Darwinism led to formulation of modern evolutionary theory. Interpret its postulates in your words with relevant examples. (10 marks)

Answers

Answer:

Darwin was one of the greatest scientists who ever lived. He wrote the book 'The origin of species'. Darwin was known not only for the theory of evolution as we know it today, but also the foundation that biological sciences are based on. Darwin was very worried that people would reject his theory, so he collected a huge amount of evidence. He took evidence from the fossil record and from his own collections. He talked to animal breeders and animal collectors. He proved that the theory of evolution is based on the idea that all species are related and gradually change over time. His postulates is what gave him the title father of evolution

Postulates of evolution:-

1) Individuals within species are variable

2)Some of these variations are passed on to offspring

3)In every generation, more offspring are produced than can survive

4) The survival and reproduction of individuals are not random

The individuals who survive and go on to reproduce the most are those with the most favorable variation, and they are naturally selected.

Example:-

If an animal has to do the same task over and over again, it's body gradually changes to make the task easier. So if a deer reaches higher and higher into trees for food, day after day, it's neck will gradually stretch as it gets older.

If a deer's neck grows longer during it's lifetime, all it's babies will be born with long necks too.

Hope this helps.

Please mark me as brainliest.

Describe how table salt dissolves in water in 300 words.​

Answers

Answer:

salt disloves in 300 words

Answer:

Salt (sodium chloride) is made from positive sodium ions bonded to negative chloride ions. Water can dissolve salt because the positive part of water molecules attracts the negative chloride ions and the negative part of water molecules attracts the positive sodium ions.

Explanation:

When sodium chloride is dissolved in water, the polar water molecules are able to work their way in between the individual ions in the lattice. The water molecules surround the negative chloride ions and positive sodium ions and pull them away into the solution. This process is called dissociation.

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