Answer:
the number of prey and predators has decreased
Explanation:
this is because of increased rate of hunting .the prey such as elephants and rhinos are being hunted for their horns while predators are also being hunted because of their skin.
also due to man and wild animal conflicts which happen in areas nearing the forests ,both prey and predators are killed.
Answer:
A??
Explanation:
Fungi have characteristics that make them similar to both plants and animals. Which characteristic do fungi share with plants but not animals?
·reproduce sexually
·contain nuclei
·have cell walls
·make their own food
Explanation:
·have cell wall
cell wall is present in plant and fungi due to protection
but not in animals due to locomotion mode of life
Fungi have cell walls characteristic which fungi share with plants but not animals, hence option C is correct.
What are the characteristics of fungi?When compared to animals, fungi need prepared organic substances for energy because they are heterotrophic organisms without chloroplasts.
Fungi are eukaryotic organisms, just like plants, and have nuclei in each of their cells. Like plants, fungi lack a cell wall and vacuoles, however, they do have a material called chitin in their cell walls that plants do not. In numerous important respects, fungi are also similar to animals.
Eukaryotic, non-vascular, immobile, heterotrophic creatures are fungi. They could be filamentous or unicellular and spread spores to reproduce. The phenomena of generational alternation are seen in fungi.
Therefore, in comparison to plants, fungi have vacuoles and a cell wall.
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in an atomic model that includes a nucleus, positive charge is
Answer: The options are not given, here are the options.
a. located in the space outside the nucleus.
b. spread evenly throughout an atom. c. concentrated at multiple sites in an atom.
d. concentrated in the center of an atom.
The correct option is D.
concentrated in the center of an atom.
Explanation:
In an atomic model, the atomic particles has the nucleus which is located at the center of the particle. This nucleus contain positive charge which is called proton at the center and the neutrons(no charge). The electrons is located out side the particle she'll or nucleus and atomic particles become neutral because the number of protons is equal to the number of electrons which is negatively charge orbiting outside the nucleus.
Which scientists played a role in developing the cell theory?
A Charles Darwin
B Theodor Schwann
C Robert Remak
D Robert Hooke
E Matthias Schleiden
The scientists that played a significant role in developing the cell theory are Theodor Schwann and Matthias Schleiden. Thus, the correct options are B and E.
What is Cell theory?Cell theory was proposed by a German botanist M.J. Schleiden and a German zoologist T. Schwann. According to them, the cell theory states that:
All living organisms whether it is plant or animal is made up of cell.A cell is the smallest unit of all living organisms.The Cell is the structural and functional unit of organisms.Charles Darwin was popular in the field of evolution. Hence, he is referred to as the father of evolution. Robert Hook was known in order to discover a cell in 1665.
Later in 1855, the cell theory is further refined by German biologist R. Virchow. According to him, all cells are arising from pre-existing cells.
Therefore, the scientists that played a significant role in developing the cell theory are Theodor Schwann and Matthias Schleiden. Thus, the correct options are B and E.
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Which of the following represents the phases of mitosis in their proper sequence?
Answer:
Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase. Some textbooks list five, breaking prophase into an early phase (called prophase) and a late phase (called prometaphase).
A cell without a nucleus is known as
Help thank you
Answer: prokaryotic cells
Explanation:
Answer: Prokaryotes are organisms whose cells lack a nucleus and other organelles.
Explanation:
Which of the following presents the best argument as to the role of the cow in this cycle?
Answer:
Cow dung helps in balancing the environment and kills germs
Explanation:
Cow dung is used for fertility of the soil. It is also used for the control of pest in the plants. When heated cow dung can be used to cook food where there are lack of wood available. Also when it is heated it releases the gases which kills germs present in the air.
Answer:
The cow eats plants and produces carbon dioxide through cellular respiration. The plants, which gain energy from the sun, then take carbon dioxide from the atmosphere and use it in photosynthesis.
Explanation:
I did the test
Which organelle would you expect to find in animal cells but not plant cells?
O A. mitochondrion
OB. ribosome
C. lysosome
O D. A. smooth endoplasmic reticulum
Answer:
Lysosome
Explanation:
Can a species switch from being an r-species to a K-species or visa versa?
Answer:
as causas de las extinción de una especie pueden ser muchas, como la destrucción de su hábitat natural, la caza o captura de animales exóticos, la contaminación, la deforestación (la desaparición de los bosques por la tala de árboles) o el cambio climático, que son consecuencia de la intervención de los seres humanos. Aunque esto también puede relacionarse con distintos fenómenos naturales como inundaciones, incendios, o la llegada de enfermedades.
Explanation:
En algunas ocasiones y por diferentes motivos, las especies de animales empiezan a desaparecer, y esto se conoce como extinción. A pesar de que escuchamos esta palabra muy a menudo, alguna vez te has preguntado, ¿por qué una especie se extingue y qué pasa cuando esto sucede?
could someone please help me out on this? im confused
Answer:
Dependent: Reduction
Independent: Solar Energy
Controlled: B
Explanation:
The dependent variable is what is being measured in the lab.
The independent variable is what is being CHANGED by the individual
The control is what is kept the SAME throughout the lab.
Hope this helped!
Which of the following is an example of how an organism depends on Earth's natural resources for survival?
A.
Humans grow corn and wheat as food sources.
B.
Beavers use tree branches to build dams and shelters.
C.
Plants take in nutrients and groundwater from the soil.
D.
all of these
Given that almost all organisms obtain energy from food by the process of cellular respiration, which is the most likely explanation for what prevents Earth from running out of oxygen?
Answer:
Oxygen cycles keeps the flow of oxygen at a constant rate.
Explanation:
The oxygen constitutes about 20% of the gaseous components in the atmosphere and it's being renewed continuously by the various microorganism and primary producers as green plants that use photosynthesis and converts the sunlight and carbon dioxide to water and releases oxygen. Oxygen cycle makes life possible as most of the elements are combined with oxygen in some way or another and are found on the lithosphere, hydrosphere, and atmosphere even biosphere hence its is present insufficient amounts.
Answer:
A.) The net effects of the reactions of photosynthesis and cellular respiration are the opposite of one another, therefore the products of one are the reactants of the other, creating a cycle.
Explanation: Hope this helps!!
6g of calcium chloride must be heated in
order to dissolve it in a test tube of water.
After an experiment, as a test tube of salt
solution cools, salt forms at the bottom of
the test tube
As soda is heated, the amount of Carbon
dioxide dissolved in it decreases.
Calcium Chloride is more soluble when it
is heated
It take more time stirring to dissolve salt
in 100ml than it does in 200mL of water.
More salt can be dissolved in a 250ml
beaker of water than in a 100ml beaker of
water
More sugar can be dissolved in Hot tea
than iced tea
The solubility of Sodium Chloride is
almost identical at 15, 20, 25 and 30°C
Supports conclusion
Brings into question this conclusion
Neutral observation
Answer:
See explanation
Explanation:
I will try to explain each point mentioned to the best of my ability.
The dissolution of calcium chloride in water is endothermic hence more solute dissolves as the temperature increases. When the solution cools, the solubility of the solid also decreases with decreasing temperature hence the solid reappears.
When soda is heated, carbon dioxide gas is evolved thereby decreasing the amount of dissolved carbon dioxide.
Let me state that increase in volume of solvent increases the amount of solute that can dissolve in it. This is why 250ml volume of solvent can dissolve more solute than 100ml of solvent.
Also, temperature is an important factor when discussing the solubility of a solute. This is why the temperature at which a certain value of solubility is quoted must be indicated. For solids, solubility increases with increase in temperature.
Lastly, the solubility of sodium chloride is independent of temperature. This is clearly seen by plotting a solubility curve.
1. A rabbit can cover a distance of 80 min 5 s. What is the speed of the rabbit?
Answer:
[tex]\boxed {\tt 16 \ m/s}[/tex]
Explanation:
Speed can be found by dividing distance by time.
[tex]s=\frac{d}{t}[/tex]
The rabbit travels 80 meters in 5 seconds.
The distance is 80 meters and the time is 5 seconds.
[tex]d= 80 \ m \\t- 5 \ s[/tex]
Substitute the values into the formula.
[tex]s=\frac{80 \ m }{5 \ s}[/tex]
Divide.
[tex]s= 16 \ m/s[/tex]
The rabbit's speed is 16 meters per second.
How does the use of cell technology benefit public health?
It makes it possible to discover new anticancer drugs.
It makes it possible to culture fewer types of cells.
It makes it possible to regulate medical research.
It makes it possible to avoid testing drugs in humans.
Answer: It makes it possible to regulate medical research.
Explanation: It helps inform everyone what to do in case of an emergency and can even reccommend the types of pills and shows all the symptoms as that the person is having.
Answer: How does the use of cell technology benefit public health?
It makes it possible to discover new anticancer drugs.
It makes it possible to culture fewer types of cells.
It makes it possible to regulate medical research.
It makes it possible to avoid testing drugs in humans.
Explanation:
A. It makes it possible to discover new anticancer drugs.this is the answer.
Which is not an example of a "living" life process?
A)Sensitivity
B)Resting
C)Growth
D)Nutrition
Answer:
Nutrition
Explanation:
--------------------
What part of the cell gives ribosomes instructions on how to assemble protein?
Answer:
The nucleus (plural, nuclei) houses the cell's genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins.
Which is one function of a protein molecule?
What organelle is labeled ?
FORENSIC SCIENCE!! When analyzing a strand of hair, investigators would first try to collect DNA from which general location?
Inside of the hair strand
The medulla
The hair tip/point furthest from the scalp
The point closest to the scalp
Answer:
The correct answer is - The point closest to the scalp.
Explanation:
In order to analyze a strand of hair investigators need to collect the DNA. To analyze a strand of hair the DNA must be nuclear DNA which can be found at the root of the hair near the scalp as the point, hair attached to the scalp there are cells that can provide the nuclear DNA. Any other section or the part of the hair strand does not contain the nuclear DNA so analyze DNA would not be possible.
Are porcupines amphibians, reptiles, or birds??? Please help 25 POINTS!!!
Answer:
rodents
Explanation:
they arent any of those things
Which organs are part of the excretory systems
Answer:Kidney
Explanation:
The Excretory system is responsible for the elimination of wastes produced by homeostasis. There are several parts of the body that are involved in this process, such as sweat glands, the liver, the lungs and the kidney system.
An organs Kidney, ureter, urinary bladder and urethra are part of the excretory systems.
What is excretory system?It is biological system.The Excretory system eliminate excess wastes material from the body of the organism.It help to maintain internal chemical homeostasis.It prevent body for damage.Kidney filter the blood and filtrate obtained is urine.This urine is passes through ureter to urinary bladder and expelled out the body.To learn more about organs here,
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A __________
mutation occurs when a base in the DNA sequence is replaced by a different
base.
Answer:
Substitution Mutations
Explanation: A substitution mutation occurs when specific bases (A, T, C or G) in a gene are swapped for different ones. This type of mutation doesn't cause a difference in the number of bases like insertion or deletion mutations do. Substitution mutations just switch out one or more bases for different ones.
Hope this helps :3
A substitution mutation occurs when a base in the DNA sequence is replaced by a different base.
What do you mean by substitution mutations?Substitution is a type of mutation in which one nucleotide is replaced by a different nucleotide. The term can also refer to the replacement of one amino acid in a protein with a different amino acid.
Base substitutions are the simplest type of gene-level mutation, and they involve the swapping of one nucleotide for another during DNA replication. For example, during replication, a thymine nucleotide might be inserted in place of a guanine nucleotide.
Substitution mutations can be good, bad, or have no effect. They cause three specific types of point mutation: silent, missense, and nonsense mutations.
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To which of the following environmental changes are populations most able to adapt?
b. seasonal temperature changes.
bc tornados, floods, and forest fires do a lot of damage.
Why does it get more difficult to do a wall sit as the time passes?
Answer:
your core muscles and legs muscles would get tired after a prolonged period of time. this goes for other exercises as well, not just wall sits.
Explanation:
What is an hypothesis?
1.
an explanation why or how an event happens
2.
an experiment to prove a theory
3.
a fact supported by experimental data
4.
a demgn for an experiment
Answer:
it should be 1. an explanation why or how an event happens
Explanation:
When you form a hypothesis, you are forming what you think will happen if you do this. then an experiment is usually followed shortly afterwards.
The kind of bond that lipids won’t form with water is a _ _ _ _ _ _ _ _ bond.
What goes in the blank spot?
Brainliest!
Considering the body’s organization from atoms to organ systems, in which level of organization are proteins like collagen? Describe how this level of organization fits into the organization of the whole body.
pleaseeee helppppp
Answer:
According to the levels of organization in the body, the level of organization in which proteins, like collagen, are found is the molecular level, allowing the structural support and the performance of other essential functions.
Explanation:
Proteins are biological macromolecules, polymers of units called amino acids. These molecules belong to the molecular level of organization in living organisms.
The level of organization where proteins are found allows them:
Form an essential part of cells.Contribute to the construction of tissues and organs.Participate in metabolic reactions, as enzymes. Defense of the organism, in the form of antibodies.Regulation of vital functions, forming hormones.Other functions of proteins are to integrate the cell membranes and perform transport function, to form receptors and to be an energy reserve.
Answer:
Why you looking down here, he clearly got it right : )
is flour + water a colloid or solution?
Answer:
I belive it is a solution
Explanation: Hope this helped :D :3
Answer: ✅
Solution
Explanation: ✅
An example of a simple suspension would be flour in water, or sand in water. A colloid is a type of mixture intermediate between a homogeneous mixture (also called a solution) and a heterogeneous mixture with properties also intermediate between the two.
IamSugarBee
What would be the main problem with reproduction if meiosis did not take place to form sex cells?
Answer:
Fertilization would result in a zygote with twice as many chromosomes as the parents.
Explanation:
Meiosis creates four haploid cells from a diploid parent cell. These haploid cells are the sex cells - sperm cells and egg cells.
Since these cells are haploid (containing 23 chromosomes, half the amount of chromosomes as the parent diploid cells), when they fuse during fertilization, they form a diploid zygote containing 46 chromosomes.
Answer:
B) Fertilization would result in a zygote with half as many chromosomes as the parents.
Explanation:
Un niño que ha enfermado de paperas o varicela, no desarrollará estas
enfermedades en una segunda oportunidad, porque:
I. la piel, mucosas y lágrimas impiden el ingreso de los microbios.
II. en el primer contacto adquirió anticuerpos.
III. interviene la inmunidad Adaptativa, la cual presenta "memoria".
IV. su sistema defensivo está preparado frente a una segunda exposición
a. I y II son correctas
b. III y IV son correctas
c. II, III y IV son correctas
d. I, II y III son correctas.
Respuesta:
La respuesta correcta es la C, ya que II, III y IV son correctas.
Explicación:
Nuestro sistema inmunológico nos defiende de agentes patógenos que pueden enfermarnos, y está compuesto por dos tipos distintos de inmunidades: la inmunidad innata y la inmunidad adaptativa.
La inmunidad innata es aquella que reacciona primero cuando se presenta una amenaza, atacando a los patógenos de manera inespecífica gracias a mecanismos que ya existían antes de que se desarrolle la infección. Cuando se trata de inmunidad innata, nuestras principales barreras de defensa son la piel y las mucosas, y las células de la respuesta inmune de mayor relevancia son los neutrófilos, entre otras.
Por el contrario, la inmunidad adaptativa, es de respuesta tardía y puede actuar de maneras diferentes dependiendo de cuál sea el patógeno invasor. Hay dos tipos de inmunidad adaptativa, la humoral y la celular. De la inmunidad humoral participan principalmente los linfocitos B, que fabrican anticuerpos específicos; mientras que la inmunidad celular es llevada a cabo por linfocitos T. La ventaja que tiene la inmunidad adaptativa en comparación con la innata es que es específica, diversa, más eficaz, y POSEE MEMORIA.
Las células de la inmunidad adaptativa presentan la capacidad de "recordar" cómo el cuerpo actuó ante una amenaza en el pasado para poder llevar a cabo un plan mucho más eficaz. Esta es la razón por la que las vacunas funcionan: porque se le inyecta a los individuos una versión débil del patógeno (por ejemplo, del virus que causa la varicela) para que el cuerpo "aprenda" a vencerlo para cuando se encuentre con ese microorganismo en un futuro.