Answer:
Nucleus
Explanation:
Because an only prokaryotic cell has a true nucleus
Oswald Avery's work with two strains of bacteria, one of which caused the
other to become harmful, showed that:
A. the factor that transforms cells is a protein.
B. DNA is the factor that transforms cells.
C. two alleles interact to produce a trait.
D. DNA carries the instructions for making proteins.
Plz help
Answer: B
Explanation: the DNA is the factor and that will transform the cells.
trust me bois
6. Describe/explain the primary and secondary/memory response of the adaptive immune system. Tell which antibodies appear and in what time frame.
Answer:
Immune responses to antigens may be categorised as primary or secondary responses. The primary immune response of the body to antigen occurs on the first occasion it is encountered. Depending on the nature of the antigen and the site of entry this response can take up to 14 days to resolve and leads to the generation of memory cells with a high specificity for the inducing antigen. The humoral response, mediated by B cells with the help of T cells, produces high-affinity and antigen-specific antibodies. This is in contrast with the CD8 T-cell response which leads to the generation of large numbers of antigen-specific cells that are capable of directly killing infected cells. Antigen-specific CD4 T cells, which provide help to B cells in the form of cytokines and other stimulatory factors, can also be expanded upon antigenic stimulation.
The secondary response of both B- and T cells is observed following subsequent encounter with the same antigen and is more rapid leading to the activation of previously generated memory cells. This has some quantitative and qualitative differences from the primary response.
Explanation:
GOOD LUCK!
Which nutrient cycle has NO atmospheric (gas) form
A) Carbon
B) Nitrogen
C) Phosphorus
D) Water
Answer:
c.) phosphorus
Explanation:
it can be found in the atmosphere as very little dust particles
Microbes vary in their tolerance of and requirements for oxygen. While obligate aerobes require oxygen to survive, other microbes can be killed by oxygen. H. pylori is considered a microaerophile as it grows best in a low oxygen environments, which is consistent with the environment in the stomach. What type(s) of microbe is/are likely to be found in the following locations of the body
Hi. Unfortunately, you did not submit the parts of the body to which the question refers, which makes it impossible for it to be answered. However, I will try to help you as best I can.
Microorganisms can be aerobic or anaerobic. Aerobics are those that survive in the presence of oxygen and therefore may be present in parts of the cup that have contact with oxygen. Anaerobic organisms are those that do not survive in the presence of oxygen and therefore can only be present in places in the body that do not come into contact with oxygen.
In this case, to answer your question, you need to identify if the parts of the body, that your question presents, come into contact with oxygen or not. This way it is possible to inform if the microorganisms that these parts of the body have are anaerobic or aerobic.
what do you mean by bone
Answer:
bone is a substance that forms the skeleton of the body
Which term best describes the following scenario?
Calcium ions travel through the cell membrane into the cell, using an integral protein. There is a higher concentration of calcium in the cell.
Answer:
facilitated diffusion
Explanation:
There are three types of diffusion:
1-simple diffusion: ions are moved from areas of higher
concentration to lower concentration
2-osmosis: moves water molecules
3-facilitated diffusion: ions move through the
membrane facilitated by transport/carrier proteins
Two different enzymes catalyze the same reaction and both exhibit the same Vmax. When Enzyme A was run with a 40 uM substrate, the initial rate (Vo) was 10 uM/min, and when g it was run with a 4 mM substrate, the Vo was 20 uM/min. Estimate the approximate Vmax and Km of Enzyme A. When Enzyme B was run with 80 uM substrate, the initial rate (Vo) was 10 uM per minute. Estimate the Km of Enzyme B.
Answer:
a) k_m = 4.08 uM
V_{max} = 20.07 uM/min
b) k_m = 8.16 uM
Explanation:
Given that:
For Enzyme A:
the substrate concentration [S] = 40 uM
the initial velocity rate v = 10 uM/min
when it was 4mM, v = 20 uM/min
i.e.
at 4mM = 4000 uM;
Using Michealis -menten equation;
when v = 10
[tex]V = \dfrac{V_{max}[S]}{k_m+[S]}[/tex]
∴
[tex]10 = \dfrac{V_{max}\times 40}{k_m + 40}[/tex]
[tex]10 (k_m + 40) = V_{max}40[/tex]
[tex]40V_{max} -10k_m = 400 --- (1)[/tex]
when v= 20
[tex]20= \dfrac{V_{max}\times 4000}{k_m + 4000}[/tex]
[tex]20 (k_m + 4000) = V_{max}4000[/tex]
[tex]4000V_{max} -20k_m = 8000 --- (2)[/tex]
equating equation (1) and (2):
[tex]40V_{max} -10k_m = 400 --- (1)[/tex]
[tex]4000V_{max} -20k_m = 8000 --- (2)[/tex]
let multiply equation (1) by 100 and equation (2) by 1
4000V_{max} - 1000K_m = 4000
4000V_{max} - 20 k_m = 8000
0 -980k_m = 4000
k_m = 4000/-980
k_m = 4.08 uM
replacing the value of k_m into equation (1)
40{V_max } - 10(4.08) = 400
40{V_max } - 40.8 = 400
40{V_max } = 400 + 40.8
40{V_max } = 440.8
V_{max} = 440.8/40
V_{max} = 11.02 uM/min
b)
Since V_{max} of A ie equivalent to that of B; then:
V_{max} of B = 11.02 uM/min
Here;
[S] = 80 uM
V = 10 uM/min
∴
[tex]10 = \dfrac{11.02 \times 80}{k_m + 80 }[/tex]
10(k_m +80) = 881.6
10k_m = 881.6 - 800
10k_m = 81.6
k_m = 81.6/10
k_m = 8.16 uM
Describe the biome in which you currently live, or one in which you want to live, or have lived. What are the atmospheric conditions (wind pattern, humidity level, etc), solar intensity, and geographic/oceanographic features that have produced this unique ecosystem
Answer:
Southern Texas
Explanation:
The Wind pattern often is represented by the westerlies, which are the winds that flow in the northern latitude of the world. The humidity level in this zone varies from 10-20%, since we are in the desert we do not have much humidity, the solar intensity is high, often found in the 9-10 uv range, it is not advised to spend more than 10 minutes on direct sun without solar protection. We have the Rio Grande to the south and some spare mountains.
Answer:
Southern Texas
Explanation:
Earth's seasons are caused by its
O A. precession
O B. rotation
O C. revolution
O D. ecliptic
Answer:
seasons are caused by revolutions. hope this helps
Some people believe that there should be no government subsidies for water use, even for irrigation of crops, as there are now. Which of the following most likely describes their reasoning? A. People are more likely to value and conserve what they must pay for. B. Industry, rather than farming, should receive water-use subsidies. C. Food production is not as important as other uses of water, such as for recreation. D. Farmers have it easy and should not benefit from tax dollars.
Answer: A. People are more likely to value and conserve what they must pay for
Explanation: I thought the answer was C but it said the answer was A
Which of the following is the correct order of events?
Select one:
a. Germination, pollination, growth of a pollen tube, fertilization
b. Fertilization, growth of a pollen tube, germination, pollination
c. Growth of a pollen tube, pollination, fertilization, germination
d. Pollination, growth of a pollen tube, fertilization, germination
Answer:
growth of a pollen tube ,pollination ,fertilization ,germination
A pea plant is heterozygous for both seed shape and seed color. S is the allele for the dominant, spherical shape characteristic; s is the allele for the recessive, dented shape characteristic. Y is the allele for the dominant, yellow color characteristic; y is the allele for the recessive, green color characteristic. A pure bred plant with green spherical shaped seeds is crossed with a pure bred plant with yellow dented shaped seeds. State the phenotype and genotype for the parent plants p1 and p2
Answer:
The correct answer is -
P1: SSyy
p2: ssYY
Explanation:
In the given question it is given that S is the allele for the dominant trait of spherical shape over s allele of dented shape and similarly Yellow pea seed is dominant over y green seed.
It is given that parent 1 or p1 is true breeding for green spherical shaped seeds which means it has two alleles of the same gene that are SSyy (S for spherical and y for green) and parent 2 or p2 is a pure bred plant with yellow dented shaped seeds that would be ssYY.
Currently, two of the living elephant species (X and Y) are placed in the genus Loxodonta, and a third surviving species (Z) is placed in the genus Elephas. Assuming this classification reflects evolutionary relatedness. Draw the most accurate evolutionary tree.
Answer:
Explanation:
The evolutionary tree is composed of,
Lineages → These are the taxonomic groups of interest placed in the extremes of the lines called branches ⇒ Elephant species X, Y, Z Nodes → These are the ramification points, which are also known as divergence points. They represent the location of the most recent common ancestor ⇒ The red spot in the graph shows the location o the most recent ancestor between species X and Y Root → This is the older common ancestor that all lineages share. The first one in the tree ⇒ The blue spot in the graph show the oldest common ancestor shared by the three speciesTwo or more lineages are more related to each other if they share a recent common ancestor -In this example, X and Y are more related to each other-. This means that they all diverge from the same node.
Two or more lineages are less related to each other if they lack a recent common ancestor. This is, the node from which these lineages diverge is placed far away in the tree.
How many kinds of mosquito are common in Nepal l
there are 130 kinds of mosquito are common in Nepal l
....... bacteria as in absence of air
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.
Which type of society has an economy primarily based on manufacturing
goods and products?
A. Hunter-gatherer
B. Industrial
C. Pastoral
D. Agrarian
Answer:
B. Industrial
Explanation:
Industrial society is the society that prospers under the name of machines and technology. In this type of society, mass production of goods and services are enabled. The use of fossil fuels help in the production of the goods. The advancements in terms of manufacturing and production. Such societies were prevalent during the Industrial revolution. It also brought urbanization and increase in the labor workers.
Explain the role of enzymes to living organisms
Explanation:
enzymes create chemical reaction in the body.But they actually speed up the rate of chemical reaction to help support life.. Enzymes is important to our body as it supports in building muscles and destroying toxins..
A group of organ systems makes up a
Answer:
Organs are grouped into organ systems, in which they work together to carry out a particular function for the organism. For example, the heart and the blood vessels make up the cardiovascular system.
Explanation:
Can you add nutrition please?
Answer:
yes we can add nutrition from healthy and nutritious foods .
hope it is helpful to you
Pistil is the male reproductive part of the plant.
True or false?
Answer:
false bestie, that's a women's
Answer:
false
Explanation:
wich of the following processes takes place during prophase
Answer:
the nuclear envelope dissolves and chromosomes condense. The chromosomes migrate to the center of the cell and align during metaphase. The mitotic spindle fibers attach during metaphase and retract during anaphase, pulling sister chromatids from each chromosome to separate poles of the cell.
¿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).
If the diploid number of a bull is 60, the chromosome number found in its sperm is
Help ASAP
Answer:
30
Explanation:
sperm cells are haploid
ADN là gì ?hihihihihihihihihi
Answer:
DNA là phân tử mang thông tin di truyền quy định mọi hoạt động sống của các sinh vật và nhiều loài virus
Explanation:
which statement is correct according to the semi-conservative theory of dna replication
Boojho wonders why the level
of mercury should change at
all when the bulb of the
thermometer is brought in contact
with another object?
Answer:
because of the heatness and coldness of the object
why do you share similar traits with your parents
Answer:
por que tienes genes que provienen de ellos y de tus antepasados
Explanation:que es un gen?
Es la unidad molecular de la herencia genética, pues almacena la información genética y permite transmitirla a la descendencia.
DNA is called the "blueprint of life" because
1. it has a blue color
2. it codes all our traits
3. it can relay messages to other molecules
Answer:
2.It codes all our traits
Answer: 2
Explanation:
a phlebotomy technician has collected a neonatal screening card. which of the following actions should the technician take to properly dry the blood stop collection card?
Answer:
place the card on a flat dry surface