Help me please !!!
Which event in meiosis increases genetic variation within a population?
A. DNA condenses to form chromosomes.
B. Segments of chromosomes cross over.
C. Chromosomes duplicate themselves.
D. Chromosomes form pairs.
Answer:
Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occur during prophase 1
DNA is unique to each____________.
(A. Recipe
(B. Organism
(C. Identical twin
(D. Still Object
Answer:
Organism
Pft I can't aswer this question without writing 20 characters so yeah just fluffing
Answer:
B. organism
Explanation:
A small loop of DNA that can get transferred from one bacterium to another bacterium is called a: A. Nucleus B. Plasmid C. mRNA D. Genophore
I need help with this please
Answer:
the amount of carbon in the cycle can increase or decrease based on the number of factories present.
Explanation:
In the carbon cycle, carbon is exchange along many different forms on earth. Carbon is the main component of biological compounds, and it is released from organisms when they die or when fossil fuels are burned, hence, the diagram demonstrates this.
Which of the following is NOT a property of water?
O A) It is a good solvent.
OB) It is denser when frozen than when liquid.
OC) It resists temperature changes.
OD) it is cohesive.
O El It can be found as a solid. liquid. or gas.
Answer:
It is denser when frozen than when liquid.
Explanation:
Ice is actually less dense than water. The lattice arrangement of ice allows water molecules to be more spread out than in a liquid, making ice less dense than water.
Hope that helps.
Which depressive disorder features symptoms that are milder but longer lasting than the symptoms of the other depressive disorders?
Double depression
Major depressive disorder, single episode
Major depressive disorder, recurrent
Persistent depressive disorder
Answer:
Dysthymic disorder
Explanation:
The symptoms of dysthymia are similar to those of major depression but are less severe. However, in the case of dysthymia, symptoms last longer. A person has to have this milder depression for more than two years to be diagnosed with dysthymia.
Answer:
hi
Explanation:
Will give 100 points!! ASAP
Animal life in the Paleozoic Era included all of the following EXCEPT ____. a. marine life c. amphibians b. humans d. reptiles
why is james charles gay
Answer:
cause nun of the girls in his school liked him
so he jump on the gay train
Explanation:
compare how is the overall chemical reaction for cellular respiration related to the overall chemical reaction for photosynthesis
Answer: cellular respiration reverses the overall photosynthetic reaction, but less efficiently. The useful energy output of respiration is less than the energy input required for photosynthesis.
Explanation:
overall photosynthetic reaction
Light energy + 6CO2 + 6H2O —> C6H12O6 + 6O2
cellular respiration
C6H12O6 + 6O2 —> 6CO2 + 6H2O + energy (as ATP and heat)
what are all of the effects of deforestation? Select ALL that apply
Answer:
Where are the answers?
Explanation:
If f(x) = 3x - 1 and g(x) = x + 2, find (f- g)(x).
Rrgggggg
Answer:
(f - g)(x) = 2x - 3
General Formulas and Concepts:
Pre-Algebra
Distributive PropertyAlgebra I
Combining Like TermsExplanation:
Step 1: Define
f(x) = 3x - 1
g(x) = x + 2
(f - g)(x) is f(x) - g(x)
Step 2: Evaluate
Substitute: (f - g)(x) = 3x - 1 - (x + 2)Distribute -1: (f - g)(x) = 3x - 1 - x - 2Combine like terms: (f - g)(x) = 2x - 3what are the steps in the digestion of protein
Explanation:
Protein digestion begins when you first start chewing. There are two enzymes in your saliva called amylase and lipase. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids.
hope it helps!
Which phrase describes the purpose of ubiquitin
Answer:
regulates other proteins
Explanation:
Ubiquitin is a small protein that is found in almost all cellular tissues in humans and other eukaryotic organisms, which helps to regulate the processes of other proteins in the body.
hope this helps, pls mark brainliest :D
Practice Classify each of the following examples as toxic, sediment, nutrient, and/or bacterial pollution.
Explain your classifications.
A Logging removes trees from a hill, leaving a barren landscape.
Classification:
Explanation:
Answer:
Sediment pollution
Explanation:
There is no more vegetation on the hill to prevent sediment from being carried away
Logging removes trees from a hill, leaving a barren landscape is sediment pollution.
Pollution refers to any contamination of the natural environment with unwanted material or energy which renders the environment unfit for life. There are many kinds of pollution that affect various spheres of the environment such as land, air water etc.
When trees are logged from a hill in such a manner that the landscape is left barren, sediments can now easily be washed away by runoff into surrounding water bodies or other areas. This is an example of sediment pollution.
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Which best describes the digestive system of arthropods?
incomplete, two openings
complete, one opening
two-way, one opening
one-way, two openings
Answer:
d. one-way, two openings
Explanation:
Answer:d
Explanation:
trusst
Why is it important for farmers to add nitrogen to their field of crops?
O Plants use nitrogen to make nucleic acids which provide energy.
O Plants use nitrogen to make carbohydrates which provide energy.
o Plants use nitrogen to make proteins which help them grow strong and healthy.
Plants use nitrogen to make lipids which help them grow strong and healthy.
Answer:
itrogen is one of the key nutrients that plants need to grow, and it is naturally available in limited quantities. Therefore, the addition of nitrogen fertilizer is an important component of achieving high agricultural yields.
Explanation:
what are the inputs for photosynthesis and where are they used?
Answer:
In terms of inputs, outputs and energy transformations, photosynthesis can be summarized as follows. Inputs - Sunlight as energy source, carbon dioxide and water. Processes - Chlorophyll traps sunlight; the energy is used to split water molecules; hydrogen from water is combined with carbon dioxide to produce glucose.
Explanation:
What is an organ system? Choose one of the organ systems and list the organs that belong to that system, as well as the system’s function.
Answer:
An organ system is a group of organs that work together as a biological system to perform one or more functions. Each organ does a particular job in the body, and is made up of distinct tissues.
1 circulatory system.
Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away.
Keeps the body's temperature in a safe range.
Answer:
There are ten major systems in the organ system.
One Example:
renal system, in humans, organ system that includes the kidneys, where urine is produced, and the ureters, bladder, and urethra for the passage, storage, and voiding of urine.
Explanation:
A system is an organization of varying numbers and kinds of organs so arranged that together they can perform complex functions for the body. Ten major systems include the skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary, and the reproductive system.
Which of the following describes all animals? A. All animals have backbones. B. All animals are multicellular. C. All animals control their own body temperature. D. All animals are vertebrates.
Answer:
b
Explanation:
Answer:
B, definitely B.
Explanation:
Select all that apply: What are some of the steps of the
scientific method mentioned?
Answer:
Make an observation.
Ask a question.
Form a hypothesis, or testable explanation.
Make a prediction based on the hypothesis.
Test the prediction.
Iterate: use the results to make new hypotheses or predictions.
Explanation:
how the body defends itself against infection
Answer: poop
Explanation: if you cover yourself in poop it heats your body up an animal does this but i cant remember which one
Answer:
Natural immunity: inborn defence. External defence is maintained by means of intact skin, by mucous, which traps and eliminates micro‐organisms, and by body secretions such as saliva and perspiration, which have disinfectant properties.
Where are many critical biodiversity hotspots located?
Answer:
Tropical forests are typically biodiversity hotspots and are usually filled with endemic species. The Upper Amazonia/Guyana Shield, the Congo Basin, and the New Guinea/Melanesian Islands have the highest number of endemic terrestrial (land-living) species on Earth
Explanation:
hope this helped:)
State the function of red blood cells.
Answer:
Red blood cells carry oxygen from our lungs to the rest of our bodies. Then they make the return trip, taking carbon dioxide back to our lungs to be exhaled.
Explanation:
They transport oxygen
Explanation:
1)It carry oxygen from our lungs to the rest of our bodies.
2)It attracts bacteria
If any of y’all can give me the definition for these words I will give 5 stars ,like and brainlest or whatever it’s called
Answer:
rRNA - Ribosomal RNA, a molecular component of a ribosome, the cell's essential protein factory. Strictly speaking, ribosomal RNA (rRNA) does not make proteins. It makes polypeptides (assemblies of amino acids) that go to make up proteins
tRNA - Transfer ribonucleic acid (tRNA) is a type of RNA molecule that helps decode a messenger RNA (mRNA) sequence into a protein. tRNAs function at specific sites in the ribosome during translation, which is a process that synthesizes a protein from an mRNA molecule.
Explanation:
What two body systems will work together to provide cells with energy?
A. Excretory and Digestive, because the nutrients from the digested food will be sent to the excretory to be delivered out as waste products.
B. Digestive and Muscular, because the nutrients from the digested food will be used immediately by the muscles for energy.
C. Respiratory and Excretory, because the oxygen will be transported to the cells so that wastes can be delivered out as a waste production.
D. Digestive and Cardiovascular, because the food will be broken down and nutrients will be sent in the bloodstream to the cells for use.
Answer:
Answer:
The correct answer for the first question would be B) the respiratory and circulatory systems.
Respiratory system is a set of organs which help in exchange of gases in the body. They bring oxygen from outside into the body and release carbon dioxide from inside the body to outside world. The exchange of the gases takes place at alveolar site (or gills in aquatic animals).
The circulatory system then carries this oxygen (mixed in blood) from gas exchange site to all the cells of the body. In addition, it also brings carbon dioxide (waste product of cellular respiration) from all the cells to the gas exchange site (respiratory system).
The correct answer of the second question would be C)the digestive and circulatory systems.
Digestive system helps in breaking down of macro-molecules (such as starch, polypeptide, fats) into smaller units (such as glucose, fructose, amino acids) as well as absorption of the same.
Nutrients from the absorptive site (usually small intestine) are then transported to the entire body with the help of blood through capillaries and arteries that is, circulatory system.
Explanation:
Body systems that will work together to provide cells with energy are:-Digestive and Cardiovascular, because the food will be broken down and nutrients will be sent in the bloodstream to the cells for use.
Digestive system will breakdown complex macromolecules into micro molecules which are then transferred into blood.Blood or Cardiovascular system will carry these micro nutrients to different parts of the body Describe digestive system?It is system that include organs that take in food and liquids and break them down into substances that the body can use for energy.
Describe cardio vascular systemThe circulatory system or cardiovascular system pumps blood from the heart to the lung to get oxygen. The heart then sends the oxygenated blood through arteries to the rest of the body. Veins carry deoxygenated blood from various parts of the body to lungs.To know more about body systems here
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dy÷dx=(x-1)(x+3) at x=2
Answer:
[tex]\dfrac{dy}{dx}=\dfrac{4}{25}[/tex]
Explanation:
The given expression is :
[tex]y=\dfrac{(x-1)}{(x+3)}[/tex]
We need to find dy/dx at x = 2
[tex]\dfrac{dy}{dx}=\dfrac{d}{dx}(\dfrac{x-1}{x+3})\\\\=\dfrac{(x+3)\dfrac{d}{dx}(x-1)-(x-1)\dfrac{d}{dx}(x+3)}{(x+3)^2}\\\\=\dfrac{x+3-(x-1)}{(x+3)^2}\\\\=\dfrac{x+3-x+1}{(x+3)^2}\\\\\dfrac{dy}{dx}=\dfrac{4}{(x+3)^2}[/tex]
Put x = 2 in above expression
[tex]\dfrac{dy}{dx}|x=2=\dfrac{4}{(2+3)^2}\\\\=\dfrac{4}{25}[/tex]
Hence, the value at dy/dx is [tex]\dfrac{4}{25}[/tex]
Which of the following correctly summarizes the development of the fetus during the second trimester?
Body functions, reflex development, and skin details
Cell division and tissue specialization
Gastrulation, neurulation, and rhythmic breathing
Specialization, function, and growth
Answer:
Body functions, reflex development, and skin details
Explanation:
The second trimester marks the period between the thirteenth to the twenty-sixth week. During this period of fetal development, the fetus begins reflex development such as sucking and swallowing. He is also now able to respond to stimuli.
Body functions are also developing at this stage. The baby can now kick, turn, and move his body. The brains are developing, the hairs and fingernails are also beginning to develop.
Skin details are also developed at this stage. For example, the vernix caseosa is produced to protect the skin of the fetus.
HELPP ASAPP PLEASE !!!!
Answer:
galaxy x and z
Carnations with red, smooth petals are crossed with carnations with white, rough petals. In the F1, all the petals are pink and smooth. The F1 intercross yields the following F2:3/16 red, smooth6/16 pink, smooth3/16 white, smooth2/16 pink, rough
1/16 red, rough1/16 white, rougha) What are the parental genotypes?b) What are the F2 genotypes and phenotypes?c) What conclusions can be made about the allelic and gene interactions for both the petal color and texture alleles?
Answer:
a) What are the parental genotypes? RRSS and rrss
b) What are the F2 genotypes and phenotypes?
F2) 3/16 RRSS + RRSs (red, smooth)
6/16 RrSS + RrSs (pink, smooth)
3/16 rrSS + rrSs (white, smooth)
2/16 Rrss (pink, rough)
1/16 RRss (red, rough)
1/16 rrss (white, rough)
c) What conclusions can be made about the allelic and gene interactions for both the petal color and texture alleles? For petal color, it occurs incomplete dominance, being R the dominant allele for red and r the recessive allele for white, together expressing pink in heterozygosis. For texture, it occurs complete dominance of the allele codifying for smooth, S, over the allele codifying for rough, s.
Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files.
For what reasons could a theory be changed or replaced? Check all that apply.
A new, untested hypothesis is proposed.
New information is discovered that does not support the theory.
A single experiment produces results that differ from all previous experiments.
New technology is developed that provides more information about the theory.
New experimental methods are designed to test a theory.
1. New technology is developed that provides more information about the theory.
2. New experimental methods are designed to test a theory.
3. A single experiment produces results that differ from all previous experiments.
im not sure about #3 but it could be it
Answer:
A. New technology is developed that provides more information about the theory.
B. New experimental methods are designed to test a theory.
D. New information is discovered that does not support the theory.
Explanation:
just did it