(b) A student tested some albumen for the presence of protein using Biuret reagent.
The solution changed colour. It was a positive result.
Describe this colour change.
Answer:
The colour changes from blue to purple.
Explanation:
Because protein is present in the albumen (egg white.)
Blood Blood has four main components:Plasma is a straw-colored fluid. It is about 90 percent water and 10 percent dissolved gases, salts, nutrients, enzymes, hormones, waste products, plasma proteins, cholesterol, and other important compounds. Parts of plasma help control body temperature, transport substances, and fight infection. Plasma proteins are involved in blood clotting.Red blood cells transport oxygen. Blood gets its red color from the iron in hemoglobin, a protein that binds oxygen in the lungs and releases it in the capillaries.White blood cells guard against infection, fight parasites, and attack bacteria.Platelets are cell fragments involved in blood clotting.
6. Complete the table to describe the characteristics and functions of blood.
Component
Characteristics
Function
Plasma
Red blood cells
White blood cells
Platelets
Answer:
Plasma is the main component of blood and consists mostly of water, with proteins, ions, nutrients, and wastes mixed in.
Red blood cells are responsible for carrying oxygen and carbon dioxide.
Platelets are responsible for blood clotting.
White blood cells are part of the immune system and function in immune response.
How does sickle cell anemia affect the digestive system?.
how do plants use cellular respiration
Answer:
cellular respiration allows plants to break down glucose into ATP
Explanation:
The process of cellular respiration allows plants to break down glucose into ATP. The ATP provides the energy they need to carry out various functions. Although plants use photosynthesis to produce glucose, they use cellular respiration to release energy from the glucose
David is developing a model of mitosis. He plans to represent a cell with a paper circle, and to represent 6 chromosomes with colored toothpicks.
Which would be the most useful representation of metaphase?
A. 3 toothpicks at one end of the circle, and 3 toothpicks at the opposite end of the circle
B. 6 toothpicks at one end of the circle, and 6 toothpicks at the opposite end of the circle
C. 6 toothpicks arranged in a line across the center of the circle
D. 6 pairs of toothpicks, or 12 toothpicks total, arranged in a double line across the center of the circle
E. 6 pairs of toothpicks, or 12 toothpicks total, arranged around the edge of the circle
The most useful representation of metaphase would be 6 toothpicks at one end of the circle, and 6 toothpicks at the opposite end of the circle.
What are cytokinesis and mitosis?Mitosis is a cell division type that divides the parent cell and the genetic material into two alike daughter cells with the same chromosome numbers.
Cytokinesis is a process by which at the end of the telophase the cytoplasm of the cell starts dividing and results in the formation of the plate in plants and furrows in the animal, dividing the cell equally.
Thus, option "B" is correct.
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How many breaths per minute is normal for an infant?.
PLEASE HELP! A flower has the genotype for red and white petals. Describe the offspring phenotype if the flower follows these inheritance patterns.
a. Codominant ? __________
b. Incomplete dominance? ___________
Answer:
Explanation:
Co dominant would give flower with red and white petals (heterozygous), whereas, incomplete dominance would sort of mix both the genotypes and give new color, in this case we will see a pink color for heterozygous genotype.
Why is it important to use plain, unsalted cracker in the cracker test .
What is thought to be the first sense that humans develop?.
Answer:
Touch
Explanation:
Because your body will consist of skin at first which will have receptors and neurones to give you the feeling of feeling something when you touch it hence touch is what you develop as a first sense
Please help (punnet square with questions)
Answer:
1. The mothers genotype is tt and the fathers is TT, genotypes could be Tt and the phenotype would be tall
1. What does the digestive system do?
2. Where and how does digestion begin?
3. Describe the path that food takes through the
digestive system.
4. Why are villi shaped the way they are?
5. How do feces leave the body?
Answer: 1: turns food into nutrients and excretes waste 2: the mouth when you chew, 3: from the mouth, down the esophagus, into the stomach, small intestine, large intestine, rectum, anus 4: to pull nutrients out of food 5; through the anus when you use the bathroom.
Explanation:
feel free to comment if you still have questions! (:
If dna of a particular species was analyzed and it was found that it contains 27 percent a, what would be the percentage of c?.
DNA of that particular species contains 23 % of C
How can we calculate the percentage of DNA?Adenosine (A) is complimentary with Thymine (T), that means that there is 27% of A + 27 % of T = 54%
To calculate the percentage of Cytosine (C) we need to know that C and Guanine (G) are also complementary. That means that the remaining 46% is half C and half G.
Therefore, the percentage of C is 23%.
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When an object is at rest, what is its speed?
a.
2 m/s
b.
3 m/s
c.
0 m/s
d.
1 m/s
Need help. 15pts.
1.) Do you think cell division stops after a new baby is born? Why or why not?
Answer:
No, as the growth into an adult requires the process called cell division and will continue on until your death
What is the law of segregation
Answer:
the last one
Explanation:
Def: During the development of the gamete, each gene is segregated in such a way that the gamete consists of just one allele for that gene.
Ultraviolet (UV) radiation is damaging because it __________. View Available Hint(s)for Part A prevents DNA transcription prevents DNA translation causes mutations in DNA deactivates the enzymes needed for DNA replic
True or false Ozone is a gas made up of four oxygen atoms
Answer:
False, is it composed of only three atoms.
What information would you need to
find a more precise age of dinosaurs
and plants?
QUICKLY PLEASE I NEED HELPPP THANK YOU
Answer:
Scientists determine the age of dinosaur bones by dating the fossils and the surrounding rocks. And plants they check the number of rings gives an overall age of the plant.
How do plants and animals depend on the atmosphere differently?
because plants give oxygen, nitrogen, and other good gasses into the air. humans
and animals use the atmosphere's gasses like oxygen to breathe and survive.
Some scientists argue that Earth's hydrosphere, atmosphere and biosphere could
NOT exist with the geosphere. On the other hand, they argue Earth's geosphere
could exist without Earth's hydrosphere, atmosphere and biosphere. Do you agree
Answer:
u r right but photosynthesis in plant doesn't affect its respiration so it takes oxygen normally like us but with a pros over animals in common which is photosynthesis ability
help this jaw hard fr fr
Answer:
Explanation:
Review the following characteristics for a population in a country:
Both birth and death rates are at extremely high levels
Population is increasing
Which stage of demographic transition does this describe?
a. Stage 1
b. Stage 2
c. Stage 3
d. Stage 4
Answer:
A) Stage 1
Explanation:
Demographic transition has to do with the changing pattern of factors that impact population such as birth rates, death rates as the population moves from regime to regime. The transition is in four stages:
Stage 1: which is characterized by high high birth and death rates. also known as pre-transition stage.Stage 2: Characterized by falling death rate but continued high death rate. Also known as early transition stage.Stage 3: characterized by a decline in birth rate and deceleration of population growth. It is also known as late transition period.Stage 4: Characterized by low birth and death rate. Negligible population growth. Also known as post-transitional period.may you please tell me the answer to this question
Answer:
It is A
Explanation:
because the bass always feeds
Zoos help to protect endangered animals, so they are necessary for animal conservation. which piece of evidence, if true, would best support this claim
The piece of evidence that best support the claim above is specialists might breed animals at zoos in order to increase their population.
How does increase animal populations?The animal populations can increase in number by artificial mating, i.e., by mating due to human activities.
These methods are very useful to increase the number of endangered animals that may become extinct.
In conclusion, the piece of evidence that best support the claim above is specialists might breed animals at zoos in order to increase their population.
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Will mark brainliest!!!!!!
how do tears form and why do they have a salty taste?
Answer:
They are produced by the lacrimal glands above your eyes. They drain into tiny holes in the corners of your upper and lower eyelids before traveling through small channels, and down your tear ducts to your nose. Our tears taste salty because of electrolytes.
Which three statements provide reasons that scientists are considering renewable sources of energy?
Most renewable resources are clean and nonpolluting.
Renewable resources can be replenished.
Renewable resources are conventional resources.
Most renewable resources are easily available in nature.
All renewable resources are cost effective.
1. Renewable resources can be replenished
2. Renewable resources are conventional
resources
3. Most renewable resources are easily
available in nature.
explanation: got it right on plato:3
The three statements that provide reasons that scientists are considering renewable sources of energy are as follows:
Most renewable resources are clean and nonpolluting.Renewable resources can be replenished.Most renewable resources are easily available in nature.Thus, the correct options for this question are A, B, and C.
What are Renewable sources of energy?Renewable sources of energy may be characterized as the types of energy that remarkably emanated from natural sources that are recharged or plenished at a higher rate than they are actually engrossed.
These sources of energy are derived from the methodology of sources that are constantly replenished at a faster rate. The process through which this energy is derived is mostly clean and non-polluting in nature.
As renewable sources of energy are acquired from natural sources, these energies are significantly easily available in nature with less or no expense.
Therefore, the correct options for this question are A, B, and C.
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fertilization of a human egg takes place in the ________.
Answer:
Fallopian tubes
Explanation:
Which types of fish are most vulnerable to overfishing? ( worth 20 points)
Explanation:
Some of the species most threatened by overfishing currently include Atlantic Halibut, the Monkfish, all sharks, and Blue Fin Tuna. Other animals not usually associated with the seafood industry are also affected, with inadvertent by-catches claiming loggerhead turtles, sharks, dolphins and whales.
Which of the organisms in the food web above could be classified as a secondary consumer?
Question 1 options:
1, Grass
2,Algae
3,Deer
4,Coyote
Answer: Coyote
Grass,Algae and Deer are all primary consumers.
What is thought to be the first sense that humans develop?.
Why is the outdated term ""junk dna"" a misnomer for noncoding regions of the human genome?.
Answer:
The conservation of “junk DNA” sequences in diverse genomes suggests that they have important functions.
Explanation:
Transposons move by means of a DNA intermediate, whereas retrotransposons move by means of an RNA intermediate.
Answer: The conservation of "Junk DNA" sequences in diverse genomes suggests that they have important functions.
Explanation:
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