Answer:
Sutton observed that sex cells half the number of chromosomes as boy cells.
Explanation:
When hydrogen and oxygen combine to form water, water is
a an enzyme.
b a catalyst.
c a reactant.
d a product.
Answer:
D. A product.
Explanation:
The water can't be an enzyme, catalyst or reactant because it was not present before or during the reaction. It was only present after the reaction, so it is a product.
Warm air creates a rising, low pressure zone.
A. True
B. False
Answer:
B. False
Explanation:
Which of the following was true about the experiment conducted by Miller and Urey
A. Oxygen was added to a flask
B. Unicellular organisms were added to a flask C. The conditions of early Earth were recreated in a flask
D. Cells were produced in a flask
Answer:
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How has artificial selection made
farmers more productive?
A. Artificial selection has given farmers an opportunity to
study science.
B. The crops and livestock are bigger and stronger, so they
provide more food per square foot of land.
C. Artificial selection has ruined farming because crops and
livestock have become sickly.
Answer: B. The crops and livestock are bigger and stronger, so they provide more food per square foot of land.
Explanation: Good luck! :D
2. Which of the following is an example of a scientific theory?
Matter behaves the way it does because it is made of atoms.
There is probably life on Mars. .
Force equals mass times acceleration.
Matter can be neither created nor destroyed.
Answer:
Matter behaves the way it does because it is made of atoms.
Explanation:
I took the quiz and this is the answer.
An example of a scientific theory would be that matter can neither be created nor destroyed. So the correct option is D.
What is a scientific theory?
A structured explanation for a group of facts or phenomena observed in the natural world is called a scientific theory. It often incorporates a scientific hypothesis and/or scientific laws.
The definition or meaning of the word 'scientific theory is different from the definition of the word 'theory' that people use casually.
The use of the word theory by scientists is different from how it is commonly used by the general public. Most common people use the word 'theory' when they mean to describe an idea or a hunch that someone has. For scientists, 'theory' refers to the way of interpreting facts.
A scientific theory does not mean the end of the scientific method. Scientific theories are proven or rejected, just like hypotheses are. Also, these theories are continuously improved or modified if more information regarding them is known. This helps to keep the accuracy of the prediction to become greater over time.
Therefore the correct option is D.
Read more about scientific theory, here
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how do normal cells become a cancer cell
Which phase is pictured?
Answer:
Metaphase
Explanation:
Because it starts the pulling away in the mitosis stages
which bonds form between polar molecules
Answer:
For polar molecules, the electrons shared in a covalent bond tend to gather on one side of the molecule while the other side becomes positively charged.
Explanation:
Theoretical element “A” has four isotopes. Use the data in the table to calculate the average atomic mass of the unknown element A. All steps of the calculations must be shown for credit.
Isotope Atomic Mass Abundance
A - 49 49.022 amu 89.89%
A - 48 48.031 amu 7.01%
A - 47 48.007 amu 3.00%
A - 46 46.001 amu 0.10%
From the calculations, the average atomic mass of the element is 48.85.
What is the percentage abundance?The percentage abundance has to do with the amount of an isotope that is available in nature.
Since we have the following mass abundance;
A - 49 49.022 amu 89.89%
A - 48 48.031 amu 7.01%
A - 47 48.007 amu 3.00%
A - 46 46.001 amu 0.10%
The average atomic mass =
(0.8989 * 49.022) + (0.0701 * 48.031 ) + (0.03 * 48.007) + (0.001 * 46.001 )
= 44 + 3.4 + 1.4 + 0.05
= 48.85
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I need an answer ASAP
I need serious answers that aren’t in another language.
What is a single stranded molecule used
to move genetic information from the
nucleus to the cytoplasm?
A. mRNA
B. DNA
C. NNA
Which best describes why the species became extinct?
A natural disaster killed off the population by flooding their habitat.
Large predators moved to the area where the rodents lived.
They had no genetic variation so they could not adapt to changes in the habitat.
They were not big enough to compete with the new, larger species for food.
Answer:
The answer is A. a natural disaster killed off the population by flooding their habitat.
Explanation:
I had to do the assignment.
Which of the following statements regarding mutations is true? Mutations -
A -occur randomly and increase genetic variability.
B- are usually harmful and cause the organisms to die.
C- are caused by changes in an organism's environment.
D- occur at the consistent rate in nearly every population.
Answer:
a
Explanation:
What animal in the Andes Mountains would be at the top of the food chain A. Rats B. Pumas C. Bears D. Guanacos. Please help
Answer:
im not sure but i think its Guanacos
Explanation:
The animal in the Andes Mountains would be at the top of the food chain - B. Pumas
Food chainthe sequence of movement of energy and matter from one level of an organism to another.
A carnivore that does not have predators is called the top predator and is situated at the top of the chain.
In mountain Andes, the carnivores are puma, lion and other carnivores.
Thus, The animal in the Andes Mountains would be at the top of the food chain - B. Pumas
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How are protozoans classified into phyla?
Answer:
On the basis of light and electron microscopic morphology, the protozoa are currently classified into six phyla. Most species causing human disease are members of the phyla Sacromastigophora and Apicomplexa
Explanation:
Please answer I’ll give brainliest. I need this for a quiz Please ❤️
B makes the most sense to me because there would be more food for the carnivores within the population.
The other question was wrong- here’s the picture for the question
Answer:
Blue- a change in matter...
Purple-the ability of a substance to combine chemically...
Green-the ability of a substance to burn
Yellow-the ability of matter...
Explanation:
Which is not part of a molecule of dna
1.) nitrogen base
2.) deoxyribose
3.) phosphate
4.) glucose
Why is genetic engineering possible?
Answer:
Genetic engineering is possible because the genetic code—the way information is encoded by DNA—and the structure of DNA are universal among all life forms.
I hope This helpes you :)
Explanation:
Answer:
It's also called recombinant DNA technology involves the group of techniques used to cut up and join together genetic material especially DNA from different biological species
hope it helps
What are the two main catagories of energy? I know the first in Kinetic but I don't remember the second.
What do you think will happen to you if your mitochondria do not work efficiently?
Answer:
For our bodies the conversion from food energy to ATP happens in mitochondria. If your mitochondria are not working properly then you are less able to convert food into ATP. For cells that require a lot of ATP, for example your muscles, this is a problem and they may become weaker and get tired faster.
Explanation:
Answer:
For our bodies the conversion from food energy to ATP happens in mitochondria. If your mitochondria are not working properly then you are less able to convert food into ATP. For cells that require a lot of ATP, for example your muscles, this is a problem and they may become weaker and get tired faster.
Explanation:
Explain how matter cycles throughout this food web. Where do the atoms/molecules travel?
plz help!
Eating other animals from producers and consumers for energy and matter moves from the nitrogen, water,and carbon cycle
PLEASE HELP!!!!
For this assignment you will be researching the different types of fungi, and reporting on their usefulness. Choose 5 different fungi and report on the following: Name of fungi What are their major characteristics? Do they have one that separates them out from others? Where do they usually grow? Pros and Cons (are they toxic? Are they beneficial to plants? Nitrogen fixers?) Give two uses that they might have
Answer:
Brown rot fungi that produce hydrogen peroxide which attacks cellulose.
Soft rot fungi that produce an enzyme called cellulase which digests cellulose.
White rot fungi that produce enzymes capable of digesting lignin.
Phycomycetes (Algal fungi)
Ascomycetes (Sac fungi)
Basidiomycetes (Club fungi)
Deuteromycetes (imperfect fungi)
here are present different types of fungi. These fungi are classified based on their morphological structure of the mycelium spore formation, fruiting bodies and mode of life cycles. The fungi are divided into five phyla such as: Chytridiomycota, Zygomycota, Glomeromycota, Ascomycota, and Basidiomycota
Explanation:
HOPE IT IS HELPFUL
if bases on a mRNA strand (codon) AUA then the three bases on the molecule ( anticodon) would be what?
The main parts of a working clothes dryer are shown in the diagram.
This appliance dries clothes primarily by converting --
Answer:
electrical energy to heat and mechanical energy
Explanation:
Answer:
Electrical energy to heat and mechanical energy
Explanation:
it uses Mechanical energy when it's MOVING the clothes
Heat in order to DRY it
Electrical in order for it to do all of that
☆*Hope this helped!*☆ <3
2. An example of an internal stimulus
O A. Thirst
O B. Noise
O C. Light
O D. Temperature
21. Follow the base pair rule to replicate this original DNA strand:
A G T A A T T C C C G T C A A G C T A C
Answer:
T-C-A-T-T-A-A-G-G-G-C-A-G-T-T-C-G-A-G
Explanation:
A = T
C = G
and vice-versa
HELP pls very time sensitive due today! Answer correctly please, anwser both questions with full sentences!:) dont put random anwser i will report you.
Answer:
B. The two stages of photosynthesis are light-dependent reactions and the Calvin cycle.
C. Glucose is also known as sugar that is found in our blood. Glucose is important because it provides energy in our body so that we do not faint. For example, when someone faints, the first thing is to give glucose to that person than water because glucose produces a lot of energy to our body faster than water. This is also the answer of why we need glucose.
Hope this helps, thank you !!
If the parent organism has 20 chromosomes in each cell, how many chromosomes will be found in each of its daughter cells?
Answer:
the daughter will have 11 in her cells
What does removing Beta catenin do?
Answer:
Explanation:
β-catenin is a dual function protein, involved in regulation and coordination of cell–cell adhesion and gene transcription. ... In humans, the CTNNB1 protein is encoded by the CTNNB1 gene.
Marianne is comparing two animals: a fruit fly and a fruit bat. She asks, "Do a fruit fly and a fruit bat share a common ancestor in their evolutionary history?" According to evolutionary theory, what is the answer to Marianne's question? A. Yes, because the fruit fly and fruit bat share the common trait of eating fruit. B. No, because the fruit fly is an insect and the fruit bat is a mammal. C. Maybe, depending on specific traits at the organism and cellular levels of both animals. D. Yes, because all living things share a common ancestor.
Answer: c. maybe, depending on specific traits at organism in cellular levels of both animals
Explanation:
Evolutionary history has to do with the processes through which living organisms evolve from their ancestors to their present generations.
It's quite possible for the fruit fly and the fruit bat to share a common ancestor based on their evolutionary history depending on specific traits at the organism and cellular levels of both animals.
Therefore, the correct option is C.