The speed of a sound wave depends upon the medium through which it travels. In general, sound travels faster through solids than through liquids or gases. Also, the denser the medium, the slower sound will travel through it. The same sound will travel at a different speed on a cold day than it would on a warm day.
what happened to the green leaf to show that starch was present
Answer:
iodine solution turned blue-black when added to it
Explanation:
the leaf is boiled in water to kill the cells and soften them for iodine to penetrate .
boil the leaf in ethanol to dissolve chlorophyll
rinse the leaf and let it cool then add drops of iodine on it and observe the colour change
Amphibians were diverse and abundant in the lush swamp forests of the ________, which is sometimes referred to as the age of the amphibians.
Carboniferous Period
In colorectal cancer, several genes must be mutated for a cell to develop into a cancer cell. Which of the following kinds of genes would you expect to be mutated? a. genes coding for enzymes that act in the colon b. genes involved in control of the cell cycle c. genes that are especially susceptible to mutation d. genes of the bacteria, which are abundant in the colon
The genes involved in control of the cell cycle is most likely to be mutated in the case of a colorectal cancer.
What is cancer?Cancer is a medical condition in which cells divide without regulation or control.
Colorectal cancer is a specific type of cancer that involves the colon of the large intestine.
According to this question, in colorectal cancer, several genes must be mutated for a cell to develop into a cancer cell.
The most likely gene to be mutated to result into colorectal cancer is the gene involved in control of the cell cycle.
Learn more about cancer at: https://brainly.com/question/8590464
In the conversion of acetylaldehyde to ethanol, what is regenerated so that glycolysis can continue?.
Answer: NADH+
Explanation: In the process of fermentation the NADH + H+ from glycolysis will be recycled back to NAD+ so that glycolysis can continue.
How does natural selection cause populations to evolve?
Organisms with favorable traits survive and produce fewer offspring
Organisms with favorable traits survive and produce more offspring
A species improves by letting only those individual organisms with desired traits reproduce
Humans select favorable or useful traits in animals for producing breeds with those traits.
Answer:
Organisms with favorable traits survive and produce more offspring
Explanation:
the first one doesn't make logical sense, the third one is wrong because that is sort of sectual (brainly wont let me write the correct term) selection (a mode of natural selection) and the fourth one is wrong because that's artificial selection (another mode of natural selection)
Alaskan rivers that are fed by the melted water of glaciers tend to be very cloudy, almost milky. What makes the water so cloudy
a. Tiny bits of weathered, very fine rock from the glacier are suspended in it.
b. Soil that eroded from the river banks mixes into the water and clouds it.
c. Acidic glacial ice weathers limestone into a chalky powder, which clouds the water.
d. Millions of microorganisms living in the ice stay suspended in the river water.
Answer:
Either c or d
Explanation:
Apologies if I'm incorrect, I'm no expert, but let me know if it's wrong I'll take it down.
Gravity causes stars to group together. We call these groups of stars:
Question 1 options:
solar system
geocentric
galaxies
heliocentric
the answer is galaxy, because it just is
Describe a mutation in a plant that could have a negative outcome for the organism. Justify your response in two or
more complete sentences.
Here’s a specious argument: "According to the simulation, the average temperature of the Earth with the maximum concentration of greenhouse gases is only 10 degrees Fahrenheit warmer than it is today. That’s nothing to worry about. " Explain one thing wrong with this statement
The statement used the word 'average' in relation to the whole globe. This means that some parts of the earth will experience more warming than others.
Averages and variationsAn average is obtained by summing up all the variates in a data set and dividing it by the total number of variates. Thus, a single figure is used to represent the entire data set.
The problem here is that the variations within the data set are hidden with averages.
Using average to represent an increase in the temperature of the earth as a result of increased concentration of greenhouse gases can be dangerous. This is because some parts of the world will experience far larger temperature changes while others will experience lower than the average.
More on averages can be found here: https://brainly.com/question/897199
Based on what we have learned so far about the cardiovascular and respiratory systems, blood pH should be lower in the ___ compared to the ___.
Answer: systemic veins and pulmonary arteries; pulmonary veins and systemic arteries
Explanation:
Based on what we have learned so far about the cardiovascular and respiratory systems, blood pH should be lower in the systemic veins and pulmonary arteries compared to the pulmonary veins and systemic arteries.
Describe the flow blood through the heart of human beings
gud mrng y'all
Answer:
Heyy
Explanation:
Deoxygenated blood from different organs comes to the right atrium through the vena cava.
From the right atrium, blood goes to the right ventricle. The tricuspid valve between the right atrium and right ventricle prevents the backflow of blood.
From the right ventricle, blood goes to the lungs through the pulmonary artery.
Inside the lungs, carbon dioxide is removed from the blood and oxygen enters the blood.
From the lungs, blood goes to the left atrium through the pulmonary vein.
From the left atrium, blood goes to the left ventricle.
From the left ventricle, blood is pumped into the aorta so that it can be supplied to different organs.
I have a problem with this question below, do you know what are all the correct choices? 100 POINTS BIOLOGY!
option D and B
Whales and hippos are related mostlyThey are evolved from a single ancestor species.There ancestors are lived in earth 50million years agoProteins are the building blocks of all the tissues in the body. Which of the following cell organelles are directly responsible for
making and packaging proteins?
O A. ribosomes and lysosomes
©B. mitochondria, Golgi complex, and ribosomes
O C. endoplasmic reticulum, mitochondria, and lysosomes
© D. ribosomes, endoplasmic reticulum, and Golgi complex
Answer:
The answer is BExplanation:
Protein cargo moves from the ER to the Golgi, is modified within the Golgi, and is then sent to various destinations in the cell, including the lysosomes and the cell surface. The Golgi processes proteins made by the endoplasmic reticulum (ER) before sending them out to the cell.
I hope this helped :))Describe the three properties of language systems.
Answer:
This means that individuals use sounds and written symbols to represent objects, actions, events, and ideas. The second property of a language system is that language is generative. This means that a small number of symbols can be combined in an endless variety of ways to create many messages. The third property of a language system is that language is structured. This means that specific rules govern the way words are arranged and the way sentences are made so that communication is effective. B. F. Skinner claimed that the nativist theory is the accurate theory to explain the process of language development.
Explanation:
hope this helps
What are the two kinds of pyrimidines found in dna?.
Answer:
DNA are cytosine and thymine
Explanation:
in RNA, they are cytosine and uracil. Purines are larger than pyrimidines because they've a two-ring shape whilst pyrimidines simplest have a unmarried ring.
Answer:
Cytosine and Thymine
Explanation:
Of the four DNA bases, (C, T, A and G), C and T are pyrimidines. The way I remember it is, C, U (which is only in RNA) and T are "pyrimidines", which has more than 3 syllables, hence there are 3 bases in this category, as compared to purines which only contain 2 (A and G). Hope that helps and it's not confusing
Cariology is the study of the ______.
Answer:
dental cariesExplanation:
Cariology is the study of the dental caries.
This refers to the dental study of cariogenesis, which looks into the effects of certain substances on your teeth, etc.
Which of the following should be the first collected at the scene?
Adult insects
Larvae
Eggs
The order doesn't matter.
In forensic Entomology (The study useing bugs in crime scenes) The first thing collected is Adult insects, then they move on to larvae and then to eggs.
Is this a plant or an animal cell compare and contrast animal and plant cell division
They Both have eukaryotic Cells.
Which the following are behaviors that are used to defend against predators? Select all that apply
-forming a herd
-forming a school
-playing dead
-fighting for territory
Answer:
Playing dead :)
Forming a school
Have an amazing day!!
Please rate and mark brainliest!!
The openings of the ureters and the urethra mark a triangular area within the urinary bladder called the
Answer:
Within the base of the bladder is a structure known as a trigone.
Explanation:
How does a lunar month compare to a calendar month?
a) they are both 28 to 31 days
b) they are both 30 days
c) lunar are 28 days, calendar are 31 days
d) lunar are 29.5 days, calendar are 28 to 31 days
Answer: D, lunar are 29.5 days, calendar are 28 to 31 days
Explanation: 1. average lunar month lasts 29.530575 days or 29 days, 12 hours, 44 minutes, and 2 seconds, a few days short of a calendar month. The orientation of the illuminated side of the Moon in the Northern Hemisphere. A lunar month is the time it takes the Moon to go through all its phases.
ways to control vectors like flies and mosquitoes
Keep your rooms clean. Pick up dropped food in the kitchen. Besides, try not to eat in the rooms. In addition, throw the litter away regularly. ...
Install door mesh and window screens. They do not allow flies and mosquitoes get into the house. ...
Sleep under bed nettings. Keep your kid in the bed covered by the mesh as well. Moreover, stick anti-mosquito peel-stick patches on clothing, bedsides and baby-carriages. ...
Close the entrance door immediately when coming in. Never open windows and doors without screens or nets.
What is the greenhouse effect? A. Reflection of all heat from the sun back into space. B. The passing of heat from the sun through Earth's atmosphere. C. Trapping of oxygen in Earth's atmosphere and reflecting of carbon dioxide back into space. D. Clouds and gases in the atmosphere trap heat rising from the earth and redirect it back towards the surface.
Answer:
I also think the answer is D
When outer objects are observed from inside water, they appear at more distance, why?
Answer:
An object seen in the water will usually appear to be at a different depth than it actually is, due to the refraction of light rays as they travel from the water into the air. ... If the angle of the beam is increased even farther, the light will refract with increasing proportion to the entry angle.
Explanation:
Electrons are in energy levels ___ the nucleus
Answer:
outside
Explanation:
The electrons of an atom orbit the nucleus,but aren't what it is made of. Protons and neutrons are inside the nucleus.
Answer:
Outside
Explanation:
Surrounding the nucleus of an atom are shells of electrons - small negatively charged particles. These shells are actually different energy levels and within the energy levels, the electrons orbit the nucleus of the atom
What type of migration factor is industrialization?
A. Political pull factor
B. Environmental push factor
C. Economic pull factor
D. Political push factor
Answer:
C. Economic pull factor
Components of saliva include______. Multiple select question. gastrin and pepsin salivary amylase bicarbonate umami lingual lipase
The components of saliva include salivary amylase, bicarbonate and lingual lipase.
What is the components of saliva?Saliva is the clear serous liquid the is secreted in the several salivary glands located at the buccal cavity of the head.
The components of saliva includes the following:
Salivary amylase, bicarbonate and lingual lipase.Salivary amylase and lingual lipase are salivary enzymes that are used for the onset digestion of carbohydrate and lipids respectively. While bicarbonate is one of the electrolytes found in saliva.
Therefore, the components of saliva include salivary amylase, bicarbonate and lingual lipase.
Learn more about saliva here:
https://brainly.com/question/882651
The special forces being trained to build up resistance, called immunity, to the specific pathogen causing the disease describes the _____.
a) innate immune system
b) adaptive immune system
c) lymphatic system
d) circulatory
e) endocrine system
Adaptive Immune System
how does tooth decay occur?
What were the products of CO2 + H2O + light
Explanation:
Glucose and oxygen ....