Please help it’s due soon...

Answer:

nucleus

Explanation:

i remember this from science.

Nucleus is the main control center of the Cell.

Answer:

The primary sign of mumps is swollen salivary glands that cause the cheeks to puff out. Other signs and symptoms may include:

Pain in the swollen salivary glands on one or both sides of your face

Pain while chewing or swallowing

Fever

Headache

Muscle aches

Weakness and fatigue

Loss of appetite

Answer:

1. A

2. C

3. B

Explanation:

1. The DNA here has a Guanine(G) content of 15% and as G is equal to C,

[tex]$GC=G+C$[/tex]

     = 15% + 15%

     = 30%

As the GC content is less than 50 % , so the DNA is not a GC rich DNA. Therefore, for a DNA to be GC rich in content, G+C should be more than 50%.

Therefore the correct option is (A), The strand has a GC content of 30%.

2. With a content of 15% Guanine, we calculate the proportions of the four bases. They are :

[tex]$A+T=G+C$[/tex] and [tex]$A=T, G=C$[/tex]

∴ [tex]$A+T=15\% +15\%$[/tex]

              [tex]$=30\%$[/tex]

So when we substract 30% from 100% , we get 70%. Now this 70% is then distributed in the equal proportions for [tex]$A$[/tex] and [tex]$T$[/tex].

Therefore, we have:

[tex]$A=30\%, T=35\%, G=15\%$[/tex] and [tex]$C=15\%$[/tex]

Therefore we calculate the content of purines [tex]$(A,G)$[/tex] and pyrimidines [tex]$(C,T)$[/tex].

Purine content : [tex]$A+G = 35\% + 15\%$[/tex]

                                     [tex]$=50\%$[/tex]

Pyrimidine content : [tex]$C+T=15\%+35\%$[/tex]

                                            [tex]$=50\%$[/tex]

Therefore, the correct option is (C).

3. Yes, the GC rich strand of the DNA is more stable the a GC low content DNA. But this stability is not due to the hydrogen bonds, it is mainly due to the stacking interaction known as base stacking.  

So the correct option is (B).

Answer and Explanation:

a. form the antigen-binding site ⇒ both chains

The antigen-binding site is formed by one hypervariable region of the light chain (VL) and one hypervariable region of the heavy chain (VH). So, both type of chains contributes to antigen recognition.

b. contain multiple variable domains ⇒ none

Both chains - light and heavy - contain only one variable domain (VL and VH).  

c. are found in the Fab fragment ⇒ both chains

The Fab fragment is composed of portions of both light and heavy chains: each portion contains one variable domain and one constant domain. The Fab fragment binds specifically the antigen.  

d. are found in the FC fragment ⇒ heavy chains

The Fc region is composed of portions of heavy chains (CH² and CH³), so it contains constant domains.  

e. contain only one constant domain ⇒ light chains

Each light chain contains one variable domain (VL) and one constant domain (CL).  

f. contain multiple constant domains ⇒ heavy chains

Each heavy chain contains three constant domains: CH¹, CH² and CH³.  

g. contain only one variable domain ⇒ both chains

Both light and heavy chains contain one variable domain. The difference is given by the number of constant domains: light chains have 1 constant domain while heavy chains have 3 constant domains.

Answer:

half of the gametes would have B and the other half would have b

Explanation:

Answer:D

Explanation:

The curve in this population growth graph indicates an unlimited food supply, which is the first option, as an unlimited food supply could explain a steady or exponential increase in population size without a curve.

Population growth is a measure of the change in population size over time, and it is affected by many factors, including the availability of resources, predation, disease, natural disasters, and human activities. The shape of a population growth graph can provide important insights into the underlying factors that are influencing the population. An unlimited food supply would allow a population to grow without any limitations. In this scenario, the population would experience a steady or exponential increase in size, and the graph would show a straight line or a curve that rises steeply. However, even with unlimited food, other factors, such as competition for resources, predation, or disease, may eventually limit the population's growth.

Hence, the curve in this population growth graph indicates an unlimited food supply, which is the first option.

Learn more about population growth here.

https://brainly.com/question/19138982

#SPJ7

Answer:

so it's saying what are your favorite animals or plants or living things and how do they survive

hi!! here's ur answer!!

my top 3 favourite lifeforms are- polar bears,tigers and ducks. :D

1) polar bears- are well adapted for survival in the Arctic. Their adaptations include: a white appearance - as camouflage from prey on the snow and ice. thick layers of fat and fur - for insulation against the cold.

2) tigers- striped coat helps them blend in well with the sunlight filtering through the treetops to the jungle floor. The tiger's seamless camouflage to their surroundings is enhanced because the striping also helps break up their body shape, making them difficult to detect for unsuspecting prey.

3) ducks- possess an oily coating that keeps water from settling in their feathers, helping them in staying dry and keeping themselves warm. Their webbed feet, designed like paddles, provide more surface area to push against the water and help them swim.

hope it helps:)

Answer:

2degree burn

Explanation:

it has moist layer of skin and it affects the outer and middle layers of your skin the hair is present in human body . hope you find it useful

cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Answer:

1. Confusion

2. Financial issue

Explanation:

1. The reason I say this is that many of them are not really sure about what they want they want to do in their later future making them a little confused on what to do.

2. It is a common issue which has taken away so many bright minds away from their future in helping the world and their individual community to prosper in different ways.

The reason why many students from grade 12 are not accepted in universities is that they may not be ready to pursue a given career or their parents may not be able to afford it.

In the whole of North America, grade 12 is the senior class or the highest class in high school.

Some grade 12 students may not be admitted into university even though they performed well because;

Hence, a good performance in grade 12 do not guarantee university admission.

Learn more about grade 12: https://brainly.com/question/11958048

Answer:

No

Explanation:

animals are heterotrophic meaning they can't produce their own food.

Answer:

TtRr - 100%

Explanation:

This question involves two different genes in pea plants. One gene is coding for height and the other for pea shape. The allele for tallness (T) and round (R) pea is dominant over the allele for shortness (t) and wrinkled (r) peas.

According to this question, an h0m0zygous tall, round pea plant (TTRR) is crossed with an h0m0zygous short, wrinkled pea plant (ttrr). The following gametes will be produced by each parent:

TTRR - TR, TR, TR, TR

ttrr - tr, tr, tr, tr

Using these gametes in a punnet square (see attached image), the following proportion of offsprings is produced in the F1 generation: All or 100% TtRr

TtRr will be phenotypically tall and round.

Answer:

TAAGCGTA

Explanation:

Answer:

The correct answer is - c. Larger claws would help the crab crack open the shells of the mussels so the crab can eat them.

Explanation:

The graph (attached) states that the two variables size of claws of the crabs depends on the thickness of the shell of mussels. With the increase in the thickness of the shell of the mussels the size of the claws of crabs also increases and becomes larger.

The most likely explanation of this change would be adapting according to the change in the shell of the crab as they require to crack their shell to eat them as mussels are the primary food source of these crabs.

Answer:

D

Explanation:

since in mitosis, the cell has 23 pair of chromosomes, after the cell division process called mitosis, it divides into 2 cells that have 23 pairs of chromosomes

Answer: The process that moves small rock pieces during the sedimentary rock formation is erosion. The carrying away of small rock particles by the effect of wind, water, or ice. It is a surface phenomenon on the earth's crust and then transportation takes place.

Explanation: I hope this helps!

( I'm confident have a great day!)

Daniel was a prophet of God both to God's captive people and to all of the following gentile kings such as Nebuchadnezzar, Darius, and Belshazzar except Xerxes. Thus, the correct option is C.

Daniel is the main character of the Book of Hebrew Bible. According to the Hebrew Bible, Daniel was a noble Jewish of the Jerusalem, who was taken into captivity by the Nebuchadnezzar II of Babylon, who later serves the king and his successors with loyalty and ability until the time of the Persian king Cyrus, all the while remaining true to the God of Israel.

The consensus of one of the most modern scholars is that Daniel is not a historical figure according to the Bible and that the book is a cryptic allusion to the reign of the 2nd century BCE Hellenistic king Antiochus IV Epiphanes.

Daniel was a prophet of God and all the gentile kings like Nebuchadnezzar, Darius, and Belshazzar except Xerxes.

Therefore, the correct option is C.

Learn more about Bible here:

https://brainly.com/question/10322222

#SPJ1

Answer:

they are the sourse of the energy

Explanation:

Answer:  The correct answer is Native Fauna

Explanation:  This answer has been confirmed correct.

Native Fauna refers to animals.

Answer:

parenchyma have primary cell walls (thin) and are unspecialized and metabolically active (photosynthesis, respiration)

collenchyma have primary cell walls (unevenly thick) which provide a level of structural support in areas of high growth, they are alive so have a protoplast

sclerenchyma have secondary cell walls which means they have lignin and are thick, they are functionally dead at maturity so provide support in areas that are done growing and are involved in transport of water

Explanation:

Answer:

Surface currents are extremely important because they distribute heat around the planet and are a major factor influencing climate around the globe.

Explanation:

Ocean currents flow like vast rivers, sweeping along predictable paths. Some ocean currents flow at the surface; others flow deep within water. Some currents flow for short distances; others cross entire ocean basins and even circle the globe.

By moving heat from the equator toward the poles, ocean currents play an important role in controlling the climate. Ocean currents are also critically important to sea life. They carry nutrients and food to organisms that live permanently attached in one place, and carry reproductive cells and ocean life to new places.Major surface ocean currents in the open ocean, however, are set in motion by the wind, which drags on the surface of the water as it blows. The water starts flowing in the same direction as the wind.

But currents do not simply track the wind. Other things, including the shape of the coastline and the seafloor, and most importantly the rotation of the Earth, influence the path of surface currents.

Answer:

A. The eggs will not produce offspring

Explanation:

All living things require fertilization in some form

Answer:

When homologous chromosomes form pairs during prophase I of meiosis I, crossing-over can occur. Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome. It is obviously another source of genetic variation in offspring.

Hope this helps you. Do mark me as brainliest.