Answer:
the answer is sunlight
Explanation:
got it correct on the test
_____________________________ is famous for his work on natural selection.
a
Charles Darwin
b
Henry Cavendish
c
Babe Ruth
d
Isaac Newton
Answer:
a
Charles Darwin
Explanation:
which is the method of estimating fish in a pond
Explanation:
There is a popular sampling method called capture – recapture or 'Lincoln Index' or 'Pieterson's Method' which is used to estimate the size of an animal or human population.
Please help me with this!!
1. Which process plays a part in genetic recombination? A. Asexual reproduction. B. Cytokines. C. Independent assortment. D. Mitotic division.
2. Which correctly lists the following terms in order from smallest to largest? DNA, chromatin, chromosomes, nucleosomes.
A. Chromatin, DNA, Chromatin, nucleosomes
B. Chromosomes,DNA, Chromatin, nucleosomes
C.DNA, nucleosomes, chromatin, chromosomes
D. Nucleosomes, DNA, chromatin, chromosomes
3. In a triploid organism, how many alleles are present for each gene per cell?
A. 1
B. 3
C. 6
D. 9
I) Independent assortment.
II) Nucleosomes, DNA, chromatin, chromosomes.
III) 3.
EXPLANATION:➻ Recombination scrambles pieces of maternal and paternal genes, which ensures that genes assort independently from one another.
➻ We know that Chromatin is a complex of DNA and proteins that forms chromosomes. Chromatin looks like beads on a string. The beads are called nucleosomes. Each nucleosome is composed of DNA.
➻ Triploids with three different alleles can easily be detected because they have a unique phenotype.
The process involved in genetic recombination is INDEPENDENT ASSORTMENT. The correct order from smallest to largest is DNA, nucleosomes, chromatin, chromosomes. In a triploid organism, there are 3 ALLELES for each gene.
In independent assortment, different gene variants or 'alleles' are independently and randomly assorted into daughter cells, which allows genetic recombination.
In eukaryotic organisms, DNA is associated with histone proteins in order to form nucleosomes, which arrange in higher organization structures called chromatin fibers.
Subsequently, chromatin fibers condense to form structures called chromosomes.
A triploid organism (3n) contains three sets of homo-logous chromosomes, each one containing one allele for a given locus.
In conclusion, the process involved in genetic recombination is INDEPENDENT ASSORTMENT. The correct order from smallest to largest is DNA, nucleosomes, chromatin, chromosomes. In a triploid organism, there are 3 ALLELES for each gene per cell.
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Apply what you know about lipids to explain why the cuticle helps prevent water loss in plants. Compare it to what humans do.
Answer:
Explanation:
Waxy cuticle is a white powdery substance that is insoluble, it is found usually on the surface of stem or leave and it prevent excessive loss of water through transpiration.
It is an adaptive mechanism used in dry areas or desert to help plants retain water that is needed for their growth by reducing amount of water loss through transpiration.
Cactus is an example of plant with cuticle that thrive well in dry areas
A 38-year-old mother of three presents to her primary care office with complaints of fatigue. She feels that her energy level has been low for the past 3 months. She was previously healthy and taking no medications. She does report that she has gained about 10 lb and has severe constipation, for which she has been taking a number of laxatives. A TSH is elevated at 25 mU/L. Free T4 is low. She is wondering why she has hypothyroidism. Which of the following tests is most likely to diagnose the etiology?
A. Antithyroid peroxidase antibody
B. Antithyroglobulin antibody
C. Radioiodine uptake scan
D. Serum thyroglobulin level
E. Thyroid ultrasound
Answer:
A. Antithyroid peroxidase antibody
Explanation:
The most common cause of hypothyroidism is autoimmune thyroiditis, also known as chronic lymphocytic thyroiditis or Hashimoto's disease. This condition (autoimmune thyroiditis) is caused by damage of the thyroid gland, which occurs when antibodies of the immune system attack this gland. The thyroid peroxidase test is an enzyme immunoassay widely used to measure the level of autoantibodies against thyroid peroxidase. Patients with chronic thyroiditis often display a positive thyroid peroxidase test. On the other hand, thyroid ultrasound is useful for the initial evaluation of painless thyroiditis in order to distinguish nodules or multinodular goiter. Antithyroid peroxidase antibodies are commonly observed in individuals suffering autoimmune thyroiditis, whereas antithyroglobulin antibodies are observed in different thyroid disorders and autoimmune diseases. Finally, a radioiodine uptake scan measures the amount of radioactive iodine accumulated in the thyroid gland, which is useful only for diagnosing early‐stage of Hashimoto's thyroiditis.
What is the chemical equation for photosynthesis
Answer:
6CO2 + 6H2O --> C6H12O6 + 6O2
Explanation:
Have a good day :)
Answer:
6CO2 + 6H2O → C6H12O6 + 6O2
Explanation:
hope that helps girly good luck!
What is the purpose of the digestive system?
1. Create energy
2. Swallow food
3. Break down food so nutrients can be absorbed
Answer:
3. Break down food so nutrients can be absorbed
Explanation:
the reasoning is when you digest something your body is breaking down the food into small chuncks so that the nutrients can be absorbed easier
Which of the following creates an
allluvial fan
A The buildupci sediment at the mouth of a
3. The seriment deposits by the side of flooding
C. The sticons that leave deepvalleys and
D. There is by ters,
Plz help fast will give 5 star
The cell cycle is the life of the cell from the time it is first formed from a dividing parent cell until its own division into two cells
Explanation:
cell cycle is made up of three main parts: interphase, mitosis, and cytokinesis. Most biologists agree that interphase makes up the period of time that a cell would be preparing for cell division. Cells spend the majority of their lives in this stage. During interphase a cell is going to be growing, replicating its genetic material and essentials to carry out cell division, and proofreading the genetic material to ensure replication has occurred correctly. This doesn’t sound like much, but it’s actually the longest part of the cell cycle. Once this is complete, the cell will then go through cell division and, theoretically, split into two new cells (cytokinesis).
How cytokinesis works will depend upon the type of cell that is dividing. Here is an image that summarizes the differences in cytokinesis in plant cells and animal cells, which is the classic example used in many introductory biology courses:
What are 2 other differences between plant and animal cells besides cell walls?
Answer:
. The main structural differences between plant and animal cells are the additional structures found in plant cells. These structures include: chloroplasts, the cell wall, and vacuoles. In animal cells, the mitochondria produces the majority of the cells energy from food.
Answer soon a possible please!
Bacteria in the soil can release____
back into the air
-oxygen
-hydrogen
-nitrogen
-carbon dioxide
Answer:
Explanation:
nitrogen
Answer:
nitrogen
Explanation:
The female gametes are called__________. *
sperm
ova
Answer:
Woman's gametes are called Ova. Sperm is what a mans gamete is.
Explanation:
For recessive trait to be expressed you need to receive the allele from both parents. True or false
Answer:
When a trait is recessive, an individual must have two copies of a recessive allele to express the trait.
Describe the scales that scientists use to measure the magnitude of an earthquake
Answer:
the ritcher scale the mercalli scale magnitude scale
True or false The sea otter is considered a keystone species that influences the survival of many other species in an ecosystem .
Answer:
false
Explanation:
answer: True
kind of
Will mark brainliest there’s a button for the pic
I'd say FLPE is the worst. It can run high temperatures but it's not safe and not safe with all foods, it's has a high cost.
Como se chama a transferencia de enrgia termica flui de um corpo com maior temperatura quando ao outro de menor temperatura quando ha diferença de temperatura entre ambos
Answer:
Conduction.
Explanation:
Conduction is the process in which heat energy is transferred from the hotter body towards colder body because of temperature difference between two bodies. Conduction occurs only due to physical contact between two bodies. In the conduction process, the thermal energy flows from a body with a higher temperature to the other body having lower temperature until both bodies having same temperature.
In 100 words or more, construct and argument supported by empirical evidence to compare and contrast the
characteristics of viruses and organisms.
Help me
Answer:
Organisms and viruses both do not contain a DNA enclosing nucleus; however, these organisms differ greatly in the complexity of their structures. Generally an organism is encompassed within a semi-rigid cell wall made of peptidoglycan, which provides structural support. It is classified as gram positive if its cell wall is thick and stains purple when tested for identification. If its cell wall is thin and stains red, it is referred to as gram negative. Under the cell wall, the organisms also has a plasma membrane made up of a phospholipid bilayer with proteins inserted inside. Within its cytoplasm, ribosomes for protein synthesis and a single
Explanation:
Cuando se excita una neurona con estímulos de intensidad creciente se obtiene, a partir del umbral, la misma respuesta eléctrica. En esta situación se pone de manifiesto la característica de: *
A) ley del todo o nada.
B) período refractario relativo.
C) período refractario absoluto.
D) excitabilidad.
E) umbral de excitación.
Answer:
d) excitabilidad
Explanation:
creo que seria esa no lo sé
no se mucho de eso
me dices si sale buena o mala
Organisms of either extreme characteristic dying out while organisms with the medium characteristic have a higher fitness is identified as?
Answer: Stabilization selection
Explanation:
Natural selection involves the differential survival and growth of organisms which have suitable traits to survive in unfavorable or adverse environment. Such traits are passed on to the next generation. Stabilization selection is a type of natural selection in which the nature selects the non-extreme phenotypic traits. Middle traits are selected and such organisms grow and reproduce. Example can be given that of human babies in which babies with low weight lose more heat and babies with high weight are difficult to be delivered from the pelvis. Therefore, babies with middle weight are expected to survive more than that of low or middle weight.
Biology - Genetics
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Answer:
what type of question it is
‼️‼️‼️
Please helppp
Answer:
“Hard limits” to population growth are things like food, water, energy, technology, living space, other basic needs and economic factors which limit people’s ability to access these things.
“Soft limits” to population growth are things like education, birth control, the desire for a better life individually and a better global future for humanity, religious celibacy or chastity or abstinence, female empowerment and economic participation, the suffering already caused by overpopulation and the desire to avoid further suffering, malnutrition or non-lethal starvation which reduces sexual libido, pollution and other man made causes of involuntary sterility or low sperm count or low fertility, desire to save the environment, aversion to pain and suffering when understood that population growth causes both.
Countries with better quality of life and access to food and basic needs often have lower birth rates and lower population growth. This shows that soft limits can actually be more effective than hard limits to stop population growth. You have plenty of countries in Africa running into hard limits and having some of the highest fertility and population growth rates at the same time. They also suffer massive problems like war, poverty, disease and low standard of living. This goes to show that running into the hard limits will pretty much let things get as bad as they can get before it stops population growth. The hard limits won’t stop all the suffering caused by overpopulation but will make enough people suffer TO DEATH that the population doesn’t grow. People fear pain, thus the soft limits are more effective when they understand that population growth was responsible for pain or suffering and avoid it.
A student is given a list of traits and is asked to organize them in a Venn diagram as shown below.
Which traits should the student put in section II (Both)?
1 a scar and blood type
2 tiger's stripes and wolf's social status
3 musical talent and wolf's social status
4 musical talent and skin color
Answer: The correct answer is option B) a scar and wolf's social status.
The acquired traits can be defined as the traits, which are only influenced by the environment of the organism. The acquired trait cannot be passed down to the offspring, as they are not genetically determined. A scar and the social status of any organism is dependent on the behavior of the organism to the environment, no genes code for both of these characters. So, scars and Wolf's social status is an acquired trait.
Explanation:
why is carbon dioxide required for photosynthesis
Answer:
Carbon dioxide is necessary for photosynthesis because plants make their food only in the presence of carbon dioxide
I hope this will help you :)
Which of the following statements about water is NOT true?
A. It helps to maintain a normal body temperature.
B. It is a good source of energy.
C. It carries substances throughout the body in the bloodstream.
D. It is needed for all chemical reactions to occur.
Which of the following is one way that humans can protect biodiversity?
If fertilization occurs which hormone triggers the thickening of the endometrium
a.estrogen
b.progesterone
Answer: B. Progesterone
Explanation: trust me;)
PLEASE HELP! WILL GIVE BRAINLIEST. Describe the contribution of photosynthesis and cellular respiration to the exchange of carbon between the atmosphere and the biosphere.
Cellular respiration and photosynthesis are essential to the carbon cycle because cellular respiration involves the intake of oxygen o2 and the exhale of carbon-dioxide co2 into the atmosphere. Where photosynthesis uses the carbon dioxide and water to create oxygen and sugars through energy to repeat the cycle. Respiration in general is a process where carbohydrates are turned into dihydrogen monoxide or water and co2(carbon dioxide). Living organisms together throughout the biosphere and atmosphere work together to continue this because carbon itself is an organic substance.
Answer:
Explanation: Cellular respiration and photosynthesis are important parts of the carbon cycle. The carbon cycle is the pathways through which carbon is recycled in the biosphere. While cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere.
Which of the following best describes what carrying capacity is?
A
The quantity of marine life a limited water resource can sustain.
B
The maximum number of a population that an ecosystem can sustain.
C
The total amount of greenhouse gases a specific ecosystem can sustain.
D
The minimum number of predators a specific geographic area needs to sustain itself.
B. The maximum number of a population that an ecosystem can sustain.