Answer:
false ig because animal cell is not complex(i am not sure)
2. Is caffeine really a source of energy
Answer
Yes i believe so
Explanation:
Which of the following is not a main characteristic of a mineral?
A. Man-made
B. Solid
C. Predictable chemical composition
D. Inorganic
Activated macrophages and neutrophils release cytokinin, signaling molecules that enhance the immune response Select one: True False
its true that cytokinin released by macrophages boost immunity
How does variation in the environment affect natural selection?
Answer:
It effects the way that certain traits in a species evolve in an area due to being better for dealing with the environment more effectively.
Explanation:
This is legit how nature works. Please rate 5 stars.
Hypothesize and diagnose the impact of variability on enzyme ability
An environmental microbiologist collects a water sample that contains bacteria that have not contacted the outside world for thousands of years. He uses sterile technique while transporting then back to the lab for testing. To his surprise, they are resistant to ampicillin. Based on your knowledge of bacterial evolution, which of the following statements provides the most reasonable explanation for this discovery?
a. The bacteria are a result of contamination on the way to the lab.
b. The bacteria do not contain 50S ribosomal subunits.
c. Vancomycin is a naturally occurring mineral occuring in the cave water.
d. The bacteria randomly acquired a mutation in their cell wall building machinery.
Answer:
The answer is "Option d".
Explanation:
These genetic mutations in heritage in the genome of the bacterium were referred to as biofilm formation. All those other changes are attributable to some genetic changes during replication. The short term of bacteria and vast quantities of the colony can develop rapidly.
The type of environmental choice then transfers into another generation. Some translations benefit human people and enhance their fitness.
The most logical cause for this finding is Option "D", and although types of bacteria have not been in contact with the outside world for hundreds of years, certain random changes resist penicillin.
Part C: Take Notes In a separate location, take notes from the sources you have identified. The notes will provide details for your presentation. While taking notes from texts and websites, use these reading strategies. In the space provided, write four pieces of information that you intend to use in your presentation. im to lazy to write the notes
Answer:
I do that sometimes I take notes in a separate location so is this like for your math homework cuz I am good enough but I don't like it that much but I'm good at it and sources identify things that will the source is like a key a key like you can open and close the door with and you're opening the key with the source so it really really really really and wouldn't be a good thing to take notes wherever you go like if you were writing a book you would want the source and the emotion and everything you wanted to buy
True during development the skeleton of a fetus is made of cartilage which is converted to bone before birth
Answer:
Early in gestation, a fetus has a cartilaginous skeleton that becomes bone in ... At birth, a newborn baby has over 300 bones, while on average an adult human has 206 bones ... It is composed of fibers and granular cells in a matrix. ... The hypertrophic chondrocytes (before apoptosis) secrete vascular endothelial cell growth ...
Explanation
n:When does the fetal cartilage turn to bone?
Key milestones in fetal bone development
Weeks pregnant Milestone
7 weeks Bone outlines for entire skeleton established; cartilage is forming
8 weeks Somites disappear; joints start forming
10 weeks Bone tissue forms and starts hardening (ossification)
16 weeks Your baby can move his limbs
in both mitosis and meiosis, sister chromatids separate during anaphase, but there are four haploid daughter cells in meiosis and two haploid daughter cells in mitosis
true or false and explain why
Answer:
flase
Explanation:
because mitosis produce diploid cells and meiosis produce 4 haploid cells
Which of the following is a skin sensory receptor for touch?
A) Pacinian corpuscle
B) Meissner's corpuscle
C) Ruffini body
D) free nerve ending
Meissner's corpuscle is a skin sensory receptor for touch.
Meissner corpuscles are responsible for the sense of touch or light pressure, that is, they are very sensitive to the movement of objects on the skin and to very low vibrations.
About Meissner corpuscles:
• They are located on the lips and fingertips and are very sensitive.
• Meissner corpuscles act when there is a soft and light touch, and when vibrations are less than 50 hertz.
• These receptors can be altered when there is the presence of diseases where both thermal and tactile sensitivity are altered.
Therefore, we can conclude that Meissner corpuscles detect fine touch, that is, they are receptors on the skin that are sensitive to low-frequency vibration.
Learn more about Meissner corpuscles here: https://brainly.com/question/6963352
Where are the photoreceptors located Inside a human eye?
Answer:
○They are located in the retina.
The type of cell in your eye that
detects photons and sends them to
your brain.
They are found in the retina (the back layer of the eye). Rods and cones are
the two types.
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☆HOPE IT HELPS....
☆HAVE A GREAT DAY!!!
What would happen to the weight of an ice cub if it melted?
A) it would weigh a little more.
B) it would weigh a lot less.
C) it would weigh the same.
D) it would weigh a lot more.
Answer:
C. it would weigh the same
Explanation:
The mass of the ice doesn't change as the ice melts, so the volume displaced remains the same whether its is solid or liquid.
State three different information about zygote.
Answer:
A zygote is the union of the sperm cell and the egg cell . Also known as a fertilized ovum, the zygote begins as a single cell but divides rapidly in the days following fertilization. After this two-week period of cell division, the zygote eventually becomes an embryo.
Explanation:
One of your classmates submits the post below which is a very informative post about criteria for safe food production during the manufacturing process. What is missing from this post? "I recently read that industrial food processing factories are required to undergo periodic inspections by the United States Department of Agriculture as well as by the Food and Drug Administration. For the USDA, these inspections are conducted by staff in the Food Safety and Inspection Service, or FSIS."A. Did not refer to the source of the information in the body of the postB. Did not state what s/he specifically learned from the sourceC. Did not provide a citation for the source of the information
Answer:
A. Did not refer to the source of the information in the body of the post
Explanation:
In the post written by his friend, we can see that he decided to write information about the periodic inspections carried out by the United States Department of Agriculture as well as by the Food and Drug Administration, because he read about these inspections somewhere. However, he forgot to show this place where he read this information, that is, he forgot to present the source where he got the information presented in the post. By presenting the source, it would make the post more trustworthy and relevant.
A researcher wanted to create a loss of function mutation for studying Type I Diabetes in a model animal. What mutation would mimic Type I diabetes?
a) Inhibition of sugar absorption in the small intestine
b) Inhibition of pancreatic beta-cells
c) Up regulation of insulin receptors on the pancreas
d) Down regulation of GLUT4 transporters in muscles
Answer:
The correct answer is: b) Inhibition of pancreatic beta-cells.
Explanation:
Type 1 Diabetes is a form of Diabetes Mellitus, a condition characterized by chronic hyperglycemia (high blood sugar levels) that can compromise many organs and even cause death if not treated properly.
The most common form of Diabetes Mellitus is Type 2 Diabetes, in which the pancreas produces insulin but cannot reach the target organs because of a pathologic state called Insulin Resistance.
Type 1 Diabetes, instead, is present in patients that cannot produce insulin on their own. Insulin is the most important hormone in the regulation of blood sugar - it is secreted by the pancreatic beta-cells when glycemia rises (which is normal after eating) and it is key in allowing glucose to reach the tissues where it's needed for energy requirements. Type 1 Diabetes is usually diagnosed in young, even pediatric, patients - the pancreatic beta-cells in these individuals are destroyed and unable to function (the reason for this is not clear in all cases), so they have to be administered with exogenous insulin to survive.
For the model animal to better represent Type 1 Diabetes, the mutation would have to inhibit pancreatic beta-cells.
what is the main purpose of the pupil
Answer:
to adjust how much light is let into the eye
Explanation:
Answer:
The pupil is where light enters the eye. How much light is controlled by the iris which surrounds the pupil and opens and closes it like a camera lens aperture.
Which of the following is true about evaluating an experiment?
A)Evaluating an experiment allows the investigator to find errors and make improvements.
B)Evaluating an experiment is not important or required.
C)Evaluating an experiment can change the prediction.
D)Evaluating an experiment can make it more confusing.
Answer:
The correct answer is - A) Evaluating an experiment allows the investigator to find errors and make improvements.
Explanation:
Evaluation is the process in any experiment that helps in improving the analysis and remove missing components and errors to get better results. It also checks if all the process is included and running properly without error.
One should constantly be evaluating his or her experiment. It includes assessing how the experiment is going as you carry it out, what could have been improved if it was to be carried out again and how can eliminate any erros.
Andrew is trying to identify an unknown element. The element is dull and
brittle, and it is a poor thermal and electrical conductor. Where on the periodic
table is this element most likely found?
Answer:
non metals
Explanation:
Who was newton please explain fast
Newton was a scientist in the 1600's who discovered gravity. He also discovered the laws of physics.
answer:
the man who discovered gravity by an apple falling on his head
hope this helps :)
Discuss how the concept of "survival of the fittest" was developed and what it means.
Explanation:
Survival of the fittest is a phrase that originated from Darwinian evolutionary theory as a way of describing the mechanism of natural selection.In On the Origin of Species, he introduced the phrase in the fifth edition published in 1869, intending it to mean "better designed for an immediate, local environment".
Answer:
there right^
Explanation:
edge22
Which process results in the formation of two identical daughter cells
Explanation: During mitosis, a eukaryotic cell undergoes a carefully coordinated nuclear division that results in the formation of two genetically identical daughter cells. ... If all conditions are ideal, the cell is now ready to move into the first phase of mitosis.
Answer:
answer is D
answer is mitosis
Explanation:
hope this helps!
Organism Clue
body
cell
1
a gamete of a housefly has 6
chromosomes
Haploid or Diploid
Answer:
Diploid
Explanation:
wrong question actually...
Is it necessary to sustain Earth's resources?why?
Answer:
earth is the only planet we know of that sustain life please mark me brain list
Watershed drains waters into a stream and tributaries. Which is its main function?
A. Production of continuous water supply that maintains life forms
B. Prevents growth of new plant species
C. Contributes to soil formation
D. Creates new minerals
Answer:
B. Prevents growth of new plant species.
Answer:
B. Prevents growth of new plant species
Hello what is this? I need help quick pleasee
how does fertilization of angiosperm differ from fertilization in bryophytes
Answer:
Fertilization in flowering plants happens through a process called pollination. Pollination occurs when pollen grains from the anther land on a stigma. ... Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule. After fertilization occurs, each ovule develops into a seed
Heat Transfer Mechanisms 1.In your own words, using the pennies activity, define the three different heat transfer mechanisms. Your definitions should include:
(i) information about how energy is moving
(ii) what is happening microscopically (that is, at the atomic level)
(iii) what phase(s) of materials is usually involved.
Answer:
The three modes of heat transfer are: 1) Radiation 2) Convection 3) Conduction
Explanation:
RADIATION:
It is the mode of heat transfer which requires no medium because the transfer of energy takes place in the form of electromagnetic radiations. The spectrum of radiations that contribute to the heat transfer via radiation is the wavelength ranging from 0.1 μm to 100 μm.
For example the heat from the sun reaches the earth via radiation that passes through space and then through the atmosphere of the earth.
CONVECTION:
It is the mode of heat transfer that takes place in a fluid matter. The molecules in this case move from one place to another due to the difference in density developed as a result of heat absorption.
Example, the boiling of water. When the water in a utensil is heated, the heat is supplied at the bottom. In such a case the molecules of the water absorb the heat resulting in increased intermolecular spacing and hence the water at the bottom becomes the least dense in the bulk of water mass in the utensil hence rises up at to the free surface of the fluid mass. Then the densest mass of the fluid occupies the bottom space and is heated by the heat source supplied. This chain continues.
CONDUCTION:
This is the process of heat transfer from one molecule to the next neighbouring molecules. The propagation of heat energy occurs in a sequential manner starting from the molecule nearest to the heat source. The microscopic phenomenon happens in the form of lattice vibrations that are responsible for the transfer of heat energy via conduction.
Example, while heating of a pan the base heats up at first being continuously exposed to heat whereas the handle of the pan being far away from the source heats up after a long time.
¿Cuál es el rol de la genética microbiana en el contexto de la Biología?
¿Qué aplicaciones tiene la Genética Microbiana hoy en día?
¿En qué consiste el protagonismo de la Genética microbiana en el devenir histórico de la Biología?
Answer:
- La genética microbiana ha sido fundamental para la comprensión de diferentes mecanismo genéticos y evolutivos
- Los microrganismos son ampliamente utilizados en medicina y procesos biotecnológicos
- La microbiología ha permitido descartar la teoría de la generación espontanea (anteriormente aceptada en biologia) como así también formular nuevas teorías (hoy en día ampliamente aceptadas por la comunidad científica)
Explanation:
La genética microbiana juega un papel fundamental en biología, ya que los organismos microscópicos (por ejemplo, bacterias) poseen características únicas para el estudio de mecanismos genético/moleculares tales como, por ejemplo, 1-un corto tiempo generacional y 2-la capacidad de manipulación de un número de organismos muy alto (N muestral) en un laboratorio. En consecuencia, los microrganismos permiten estudiar mecanismos genéticos y evolutivos con mayor grado de precisión y versatilidad al ser comparados con organismos pluricelulares. La microbiología ha permitido el desarrollo de técnicas esenciales en el campo de la biología molecular: la técnica de edición genómica CRISPR-Cas9 se basa en el sistema adaptativo que poseen ciertas bacterias para hacer frente a infecciones virales. La biotecnología microbiana ha permitido también desarrollar diferentes tipos de alimentos y procesos biotecnológicos (por ejemplo, la cerveza y ciertos productos lácteos requiere la utilización de microrganismos para llevar a cabo el proceso de fermentación). Por otra parte, mediante técnicas de recombinación genética podemos explotar las características de los microrganismos para producir a gran escala ciertos productos biotecnológicos y medicinales (por ejemplo, producir insulina para uso humano). La microbiología emergió en la segunda mitad del siglo XIX y desde entonces ha posibilitado el desarrollo de importantes avances para el tratamiento y cura de enfermedades infecciosas, como así también descartar teorías tales como la generación espontánea y generar nuevos conocimientos en el campo de la biología y la genética (por ejemplo, el descubrimiento que el ADN se replica de manera semiconservativa fue realizado utilizando cepas de E. coli).
Most enzymes can function within a rather broad pH range, approximately 3-12.
True or false?
Which of the following are differences between DNA and RNA? Mark all that apply.
a- DNA nucleotides include: Adenine, Cytosine, Guanine and Thymine
b- RNA nucleotides include: Adenine, Cytosine, Guanine and Uracil
c- DNA normally exists as double stranded
d- RNA normally exists as single stranded
e- RNA normally exists as double stranded
f- DNA normally exists as single stranded
g- The sugar in DNA is a ribose
h- The sugar in RNA is a deoxyribose
Answer:
The correct answer is - a, b, c, d, g and h.
Explanation:
DNA and RNA both are nucleic acids and have considered genetic materials. There are certain difference in these molecules such as-
Different sugars present in the nucleotide, Deoxyribose sugar in DNA and ribose sugar in RNA.
There are different nitrogenous bases also present as RNA has uracil instead of thymine.
DNA normally found in double-stranded while RNA exists in single-stranded.
