What is Earth's atmosphere made of?
Answer:
Explanation:
Earth's atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent
What shares ¼ of its genes with humans?
Cells can be made by putting all of the parts together and they do not need to come from other cells
True
False
Which scientist did NOT help develop the basic cell theory?
A. Rudolf Virchow
B. Charles Darwin
C. Anton van Leeuwenhoek
D. Robert Hooke
E. All of the above helped in developing the cell theory
PLEASE HELP!!
The given statement is false and the cell hypothesis was created by Rudolf Virchow, Theodore Schwann, and Matthias Jakob Schleiden, hence option B is correct.
What is cell theory?As a result, van Leeuwenhoek and Schwann did not independently develop the cell hypothesis.
The scientific idea that cells make up living beings, that they are the fundamental structural and organizational unit of all species, and that they all originate from previously existing cells is known as cell theory.
Typically, three scientists Theodor Schwann, Matthias Jakob Schleiden, and Rudolf Virchow are credited with creating the cell theory.
Therefore, Schwann and Schleiden proposed that cells were the fundamental building block of life in 1839.
Learn more about cells, here:
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Assume the first DNA codon for the insulin gene reads TAG. Using your codon chart, look up the amino acid that is coded for by this codon.
Answer:
Isoleucine
Explanation:
chemical energy is stored in the bonds of chemicals? true or false?
Which resource is classified as nonrenewable?
A corn
B. granite
C. lumber
D. wind
the nonrenewable resource is granite
Of these two spacecrafts, which do you feel had the most successful mission? Explain two reasons why.
Answer:
?
Explanation:
Which of the following is true regarding the large intestine?
А
It is the major site of water absorption.
B
It is four times as long as the small intestine.
Most chemical digestion occurs there.
D
It contains salivary glands, which secrete amylase.
The statement that is true regarding LARGE INTESTINE is option A which states that It is the major site of water absorption.
The LARGE INTESTINE is part of the alimentary canal in the digestive system of mammals. The main function of
• Is to absorb water and salts from the material that has not been digested as food, and
• get rid of any waste products left over.
The main parts of the LARGE INTESTINE includes:
• the cecum,
• the colon, and
• the rectum
From the cecum, the undigested food passes into the colon. Here, WATER is ABSORBED. This concentrates the waste products and makes them semi-solid. In this state, the waste products are called faeces. Faeces pass into the rectum and out of the body through the anus.
Therefore the statement that is true regarding LARGE INTESTINE is that It is the major site of water absorption.
An image is attached below showing the different part of large intestine which is the structure in yellow.
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8. In chickens, brown feathers are dominant over red feathers. Suppose we cross two heterozygous chickens.
Draw the punnett square and list the genotypes and phenotypes of the offspring.
I
Genotypes of offspring:
Phenotypes of offspring:
Plz help me
Answer:
Crossing two chickens heterozygous for the trait feather color, when brown feathers are dominant over red feathers, will produce offspring with brown and red feathers in a brown:red phenotypic ratio of 3:1.
Explanation:
Knowing that in chickens brown feathers are the expression of the dominant allele (B) and the recessive allele is red (b), crossing two heterozygous individuals (Bb) will result in offspring that are likely to have brown or red feathers.
The cross can be represented by a Punnett Square:
Bb X Bb cross
alleles B b
B BB Bb
b Bb bb
Where the result is:
Genotypes:
Bb, 50% BB, 25% bb, 25%Phenotypes:
Brown feathers, 75% Red feathers, 25%.In this case, the probability of having brown or red feathers is 3:1.
How does the lack of nucleus benefit a red blood cell and help it perform its structure?
How do typical human body temperature and pH explain why lactase can work efficiently in the human body of most humans?
Answer:
Lactase requires 6 pH and 37 degree Celsius temperature.
Explanation:
Lactase can work efficiently in the human body of most humans because the pH and temperature of the body is favorable for the lactase to work. Lactase has a range of pH from 2 to 7 but work best at the pH 6 and at the temperature of 37 degree Celsius which is the human body temperature and pH so that's why the lactase can work efficiently and effectively in the human body.
the passing of characteristics from parents to offspring is
Answer:
genes
Explanation:
Suppose that this population of mice has stabilized so that both white and brown appear. White mice survive better in the winter and brown mice survive better in the warmer months. If a group of these mice migrated to an area that didn't get snowy in the winter, what do you think would be the long term effect on the color of these mice? Explain why.
Answer:
more brown mice would survive as the white ones without the snow to camouflage them from predators would get picked off by predators more than the brown ones
Explanation:
Over a long period of time, the population of white mice will reduce or would disappeared.
What is Natural Selection?It is a method of evolution in which the organisms of a population are selected by specific parameters.For example - color, running speed, etc.In a place where the winter is not snowy, the white mice will be easily caught by predators. Brown mice have less chance to be caught by predators, hence surviving better in non-snowy places.Therefore, over a long period of time, the population of white mice will reduce or would disappeared.
Learn more about Natural Selection:
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Two fruit flies with normal wings are crossed. Among their offspring are 89 with normal wings and 35 with dumpy wings.
a. What are genotypes of the parents?
b. Which trait is dominant? Which trait is recessive? Explain how you know.
Answer:
a. What are the genotypes of the parents? Both parental flies are Nn, Heterozygous for the trait
b. Which trait is dominant? Normal wings, NN or Nn
Which trait is recessive? Dumpy wings, nn
Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files.
Which type of molecules make up the majority of a cell’s plasma membrane
Answer:
The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate groups that are attached to some of the lipids and proteins. A phospholipid is a lipid made of glycerol, two fatty acid tails, and a phosphate-linked head group.
Explanation:
(DONT MIND THE FACES I PUT) Which of the following is an example of maintaining homeostasis?
A. Learning :I
B. Sweating :o
C. Playing :)
D. frowning :(
Answer:
sweating
Explanation:
The body maintains homeostasis by eliminating these substances through the urinary and digestive systems. An individual simply urinates and defecates the toxins and other nasty things from the blood, restoring homeostasis to the human body.
how are checkpoints currently behaving in sally cancer cells
Answer:
Instable behavior.
Explanation:
The checkpoints currently behaving instable in sally cancer cells because mutants show genetic instability so this instability is the cause of cancer disease. Two checkpoints are sensitive to DNA damage, one occur before mitosis cell division and the other occur before replication of DNA. So damage occur in these two check points leads to instable behavior of cancer cells.
Does anyone know or understand how to do this?
Answer:
write the one word answers/their function for the description given
for example, answer 1)
Phloem cells that surround sieve tube elements. The tough covering of the root tip that protects the meristem. The part of the plant structure containing apical meristem tissue that can produce new stems and leaves. The central region of a root that includes the vascular tissue -- xylem and phloem.
what s the function of the cell wall ?
The function of the cell wall for a eukaryote cell is provide structure, support, and protection for the cell with its rigid outer layer. The cell wall in plants is composed mainly of cellulose and contains three layers in many plants. The three layers are the middle lamella, primary cell wall, and secondary cell wall.
Atoms Bond to each other in order to become__________. *
Answer:
im not really sure but maybe awnser but i think its an electron
Explanation:
Answer:
more stable
Explanation:
atoms bond to gain/lose electrons in order to complete their valence shells and make them more stable
During sexual reproduction, the offspring inherit their traits from A the father В. the mother C. both parents D. themselves
Answer:
C. Both parents
Explanation:
I am not going to explain in full detail but basically the offspring needs something from the mom and the dad to live
The substance produced in anaerobic respiration is changed back to glucose.
Where does this process happen? Tick one box.
lungs
stomach
brain
liver
Answer:
liver hope it helps
Explanation:
A dog barks 30 times in 2 minutes. How many times does the dog bark per minute? barks per minute
Answer:
15 times per minutes if barking at a constant rate
Explanation:
Learning Task 6: Label the parts of the female reproductive system.
1.
2.
3.
4.
5.
6.
7.
8.
Answer: (Note: You will find the complete image in the attached files)
1. Fallopian tube
2. Uterus cavity
3. Bladder
4. Urethra
5. Ovary
6. Ovary
7. Uterus
8. Vagina
Explanation:
The vagina is a muscular tube-shaped connection that extends from the vaginal opening to the uterus. Vagina walls are very muscular, which allows contraction and expansion movements. It is located just between the urethra/bladder and the rectus. Menstruation, copulation, and birth occur through the vagina.
The uterus is a muscular and hollow organ, also located between the bladder and the rectus. The uterus wall is formed of three layers: perimetrium, mesometrium, and endometrium. This organ is separated into two parts: the uterus body and the cervix, which protrudes to the superior area of the vagina. Here is located the uterine opening that communicates the vagina with the uterus cavity. The final rounded portion is called "uterus fundus", and each of the two extremes is called "uterus horn". These horns are united to the Fallopian tubes.
Fallopian tubes are ducts that communicate each of the ovaries with each of the uterus horns. These tubes receive the oocytes that are getting out of the ovaries and carry them to the uterus. In their way, they might meet a spermatozoid and be fertilized.
Both ovaries have an oval shape, of approximately 3 cm in length each and 1 cm in width. They are located at each side of the uterus and are in charge of the production of the feminine gametes (the whole ovulation process).
the diagram shows a model of how a hydra reproduces by budding
Answer:
B. It shows offspring that have the same genes as the parent.
C. It shows asexual reproduction.
Explanation:
Hydra reproduces by budding which is kind of asexual reproduction. In budding, a small bud appears on the body of that organism and grow in size with the passage of time and finally detached from the parent body. so no fusion of gametes occurs so no chance of genetic variation. The offspring have the same genes as the parent because it forms from one parent.
What does replication mean?
Answer:
process of copying DNA prior to cell division
Answer:It means to produce something or the process of producing something. Also means to create something.
Ex. I am replicating a new serum for the Corona-virus.
Explanation:
What happens when hurricanes occur
Answer:
As these storms travel, the wind, rain, and storm surge destroy the shoreline, villages, and cities in their path. Storm surge is a rise of the ocean caused by the winds of the storm. ... When hurricanes make landfall, they begin to decrease in strength because they no longer have the ocean water from which to gain energy.
I hope it's help
which scientists was the first to discover that plants gain their mass from water?
Answer:
Van Helmont
Explanation:
he was the first to discover it
ITS REALLY IMPORTANT
7. What is the complimentary mRNA sequence to
the DNA sequence A-T-T-G-C-A?
A. T-A-A-C-G-T
B. no answer
C. U-A-A-C-G-U
D. T-A-A-G-C-U
Answer: A
Explanation:
Could someone help me out on this problem