Answer:
The Endosymbiotic theory is the theory that “Cells evolved from previous ancient cells.”
Which timeline shows the correct order of contributions made to the discovery of DNA?
(Options are in screenshots below!)
Answer:
The correct answer is B.
Explanation:
DNA was discovered in 1800, and then scientists studied DNA with X-Rays. After a while, scientists published a 3D model of DNA, and shortly after, scientists decoded DNA genes. So the answer is Option B.
Hopefully, this helps! :D
Ask your question below!
In the 1800s first the discovery of DNA was done, than the X-ray study of the DNA was done, after that the 3-D model of the DNA was developed, and finally human genetic code was decoded in the 1960s.
• The DNA was initially identified in the late 1860s by Friedrich Meischer, a Swiss chemist.
• After that Rosalind Franklin and Wilkins studied DNA with the help of X-ray diffraction tool.
• In the 1953s, the 3D model of the DNA molecule was discovered by Watson and Crick.
• Finally in the 1960s, Nirenberg and his colleagues at the National Institutes of Health deciphered the human genetic code.
Thus, the second timeline shows the correct order of contributions made to the discovery of DNA.
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The proteins found in your hair and fingernails would be classified as what type of proteins?
Answer:
yes
Explanation:
creatine like horns of rhinos or finger nails
Answer:
Keratinocytes
Explanation:
Keratinocytes make keratin, a type of protein that's a basic component of hair, skin, and nails. Keratin in the skin's outer layer helps create a protective barrier.
Where are the protons located?
O nucleus
O electron cloud
Answer: The nucleus.
Explanation: In an atom, there are two main parts, the nucleus and the electron cloud/electron shells. The protons and neutrons are located in the nucleus, and the electrons are located in the electron shells/cloud/whatever.
Shannon is making a Venn diagram to organize the characteristics of cell walls and cell membranes. Which pair of characteristics both belong in the two areas of the Venn diagram that do not intersect?
Answer:
its b
Explanation:
Answer: B) Contains mostly cellulose; forms the outer layer of animal cells.
Explanation:
nya
help asap its either a c or d
Answer:
A) Simple Diffusion
Explanation:
Facilitated diffusion has a protein channel, while simple does not. If its not A, then its definitely D, no doubt
1. View the cartoon image at right. You’ve been volunteering in a kindergarten classroom, and one of the children asks about the biological levels of organization that you are studying (in random order): tissues, cells, organ systems, organs. From smallest to largest, explain these levels as they relate to the cartoon image below. Remember, it is unlikely the children in this kindergarten class have taken an advanced science course yet so keep this in mind when making your explanation.
Answer:
May you please include the image, so I can help you?
Explanation:
I need visuals.
Write a news story of road accident
Answer:
15 Killed, 28 Injured in a Bus accident
The bus was going to Nagpur in that the another bus came and crash to the another bus. In this accident 15 people were Killed and 28 peoples are injured.
According to police the people in the Bus, was the people's of a Nagpur. in this accident the police has Declared that there is no mistake of Driver in this accident.
The transport minister of Maharashtra Diwakar Raote Introduced that government will give 2 lakhs rupees to injured family. and 3 lakhs to dead families.
PLEASE ANYONE I NEED HELP!!!!
what is the net ionic equation and what are the spectator ions of Bel2(aq) + PbSO4(aq) = BeSO4(aq) + Pbl2(s)
Explanation Worked out
Where are the tectonic plates located?
Answer:
The outermost part of Earth's structure is known as the lithosphere. The lithosphere consists of the crust and small portion of the upper mantle. The lithosphere is divided into a number of tectonic plates. These plates move and interact with one another, driven by convectional forces within the Earth.
Explanation:
What would happen if no one obeyed
stop signs, traffic lights and speed
limits? Chaos! And, no doubt, someone
would get hurt. Luckily there are
"Rules of the road” in place to keep
drivers safe. Now think about how we
can keep ourselves and others safe
from labels, prejudice and stereotypes.
Come up with your own "Rules of
Respect" that will keep you and others
safe from the harm that labels,
prejudice and stereotypes can do.
Answer:
1. Never judge someone by appearance, particularly color or outfit/tattoos
2. Always treat someone with respect as if they are your friend
3. Never presume someone's financial conditions based off of their lifestyle
With these rules, we could theoretically be one step closer to equality.
Explanation:
What is the correct formula for photosynthesis?
6CO 2 + 12H 2O ---> C 6H 12O 6 + 6O 2
C 6H 12O 6 + 6O 2 + 6H 2O ---> 6CO 2 + 12H 2O
6CO 2 + 12H 2O ---> C 6H 12O 6 + 12O 2
12H 2O + C 6H 12O 6 --->6CO 2 + 3O 2 + 3H 2O
Answer:
Photosynthesis is a process by which plants and photosynthetic bacteria obtain their food in presence of sunlight from water and carbon dioxide. They produce glucose as the food and oxygen is emitted as the byproduct. The equation for photosynthesis is - 6CO
2
+12H
2
O→C
6
H
12
O
6
+6H
2
O+6O
2
↑.
Thus, the correct answer is 'Photosynthesis.'
Explanation: hope this helps!
Chromosomes create genes true or false
Answer:
false
Explanation:
genes are made up from dna and are created from viruses or inherited from our parents
Hope this helped! Have a good day!
A student is comparing two solutions. Solution A has a pH of 4 and solution B has a pH of 10. Which best describes the solutions?
Solution B is more acidic than solution A.
Solution A is more acidic than solution B.
Solution B has more hydrogen ions than solution A.
Solution A has more hydroxide ions than solution B.
Answer:
Solution A is more acidic than Solution B
Explanation:
Answer:
The answer is B
Explanation:
I took the test and got it right :)
what process produces sex cells (sperm and egg)?
Cellular Respiration
Osmosis
Meiosis
Mitosis
Predict how a lack of resources (food, water, shelter) would influence population size. Do you think the lack of availability would increase or decrease the size of a population? Why?
Answer:
a lack of resources would most likely decrease a population size because it will limit growth and decrease survival rates. There will also be more competition.
Explanation:
Please don't plagiarize. Thanks :)
How does niche affect organisms populations in an ecosystem
Answer:
Without the ecological niches, there would be less biodiversity, and the ecosystem would not be in balance.
Explanation:
A species' ecological niche can be defined as the range of resources and conditions allowing the species to maintain a viable population a more simple definition is if two species have the same niche, one species will exclude the other.
What is a reasoning statement?
Answer: A reasoning is a form of logical thinking that uses related observations to create a general conclusion.
Explanation:
A life scientist such as a biologist first makes observations and records them.
Respiration is the process in which organisms break down food to release ____.
a.
energy
c.
sugar
b.
nutrients
d.
oxygen
Answer: a. energy!!!
Explanation:
It's me again!! Hope this helped!! :D
Answer:
Sugar
Explanation:
I am not completely sure but correct me if I am wrong. Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.
Hope it helps!!!!
2. Which of the following are REACTANTS in PHOTOSYNTHESIS?
Answer:
Carbon dioxide, sunlight and water
Explanation:
that is right
We must breath in__ so our cells can gain more___
Answer:
oxygen ,energy
Explanation:
what is a substance that increases the hydrogen ion concentration in a solution.
Answer:
Explanation:
Acid. is a substance that increases the hydrogen ion concentration in a solution.(hight H+ concentrations) ~When hydrochloric acid is added to water, hydrogen ions dissociate from chloride ions: HCl -> H+ + Cl− ~Addition of an acid makes a solution more acidic.
define hypogeal germination and Epigeal germination
Explanation:
Hypogeal germination is when the plant is germinated under the ground. An example of this would be the pea plant.
epigeal germination is the opposite of that. Germination takes place above the ground. normal bean plants have epigeal germination
Jackson says, “The really scary things though are the physical, chemical, oceanographic things that are happening.” What does he mean by this?
Oceanography includes the oceans and sea depicting and analysis or change in the characteristics of water bodies.
By the statement, scary things are happening to the oceans by Jackson means that:
The oceans and aquatic lives are suffering from climatic changes and is undergoing immense physical and chemical changes.
The addition of unwanted wastes, dumps and chemical spills in oceanic bodies are altering the chemical and physical attributes of the water. The habitants of water like fauna and flora are suffering a lot of loss due to changes.
The involvement of human activities has increased water pollution and many other kinds of pollution. Overfishing, oil spills and dumping of waste in water bodies have altered the natural characteristics of water.
To learn more about pollution follow the link:
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Which statement BEST explains why few plants grow on a tropical rain forest floor?
A.pollution
B.climate change
C.habitat destruction
D.tectonic plate motion
Answer:
c
is correct!
A pair of fruit flies reproduces and has 1000 offspring. All 1000 offspring have the alleles Gg. What is the most likely combination of alleles that each parent has, and why are other combinations not likely.
Answer:
The correct answer would be - GG and gg.
Explanation:
As it is given that all the 1000 offspring having the same allele Gg which is only possible in one condition that is cross between GG and gg because it is a heterozygous condition in the offspring. So there must be both allele present and it can not be heterozygous parents as there would be a different combinations of offspring in that case.
If the parents either GG only all the offspring would be GG the same with gg than all the offspring will be gg, thus the correct answer would be GG and gg.
Which of the following are true about cancer? Check all that apply.
Cancer cells display contact inhibition.
Cancer is contagious.
Cancer cells divide uncontrollably.
Cancer can spread around the body.
Cancer comes in many forms.
Cancer affects only the elderly.
Cancer cells invade healthy tissue.
Cancer does not obey contact inhibition.
Answer: I think these are the answers:
- Cancer can spread around the body.
- Cancer cells invade healthy tissue.
- Cancer cells display contact inhibition.
- Cancer comes in many forms.
- Cancer cells divide uncontrollably.
and I think "Cancer does not obey contact inhibition." is one too... I hope this helps! :D
Explanation:
Cancer cells:
• Divide uncontrollably
• Comes in many forms
• Invade healthy tissues
• Does not obey contact inhibition
What is cancer?Cancer is a diseased condition in which uncontrolled cell division takes place.
Cancer are of two main types: benign and malignant.
Benign tumours are localized to a particular organ and thus can be removed through chemotherapy or surgery.
Malignant tumours spread to body parts through blood stream and attack the healthy cells. This property of metastasis is unique to cancer cells.
Normal cells show their contact with the adjacent cells. In cancer, contact inhibition is lost and so they divide in an uncontrolled manner.
Breast cancer, leukaemia, lung cancer etc are some of the examples of cancer.
Cancer is detected through tissue biopsy. X-Rays, CT-Scan, MRI are some other techniques that detect cancer in the body.
Cancer can be treated if diagnosed early. Radiotherapy, chemotherapy and surgical intervention are the part of cancer treatment.
Therefore, cancer is considered a serious medical complication.
Learn more about cancer, here:
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Which correctly describes the role of histones in eukaryotic cell division?
a) Histones connect sister chromatids.
b) Histones protect the ends of chromosomes.
c) Histones keep the DNA compact and organized.
d) Histones copy the DNA before division begins.
Histones copy the DNA before division begins is the correct role of histones.
What is Histone?A chromosome's structural support is provided by a protein called a histone. Long DNA molecules found on each chromosome must fit into the cell nucleus.
To do it, the DNA wraps around complexes of histone proteins, giving the chromosome a more compact form. Additionally, histones are involved in the control of gene expression.
A nucleosome, which is made up of eight histone proteins, can exist. DNA can loop around a nucleosome much like a small spool. Thus, histones are crucial in maintaining the genome's order and neat wrapping inside a cell.
Therefore, Histones copy the DNA before division begins is the correct role of histones.
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Need help with this
Answer:
her arms are puffy , red and swollen
Explanation:
that is literally a sign :/
Who knows how to do this?
Answer:
respritory and immune
Explanation:
took the test
Answer: 6. the first one ,the third one ,
Explanation:
7.immune or respitory since her breathing is fast
Help plz asappppppppp
Answer:
A. Whales evolved from four-legged animals.
Explanation:
I'm 100% on this one, because on Plato we were learning about evolution, and one of the slides said that whale had evolved from four legged animals.
Hope this helps ya!!!
Got a screenshot for proof!