Does the endoplasmic reticulum have a double membrane.

Answer: B) the angle of insolation is high

Explanation:

During that time the Earth is facing the sun at a closer angle. So the chances of incoming solar radiation will be higher.

In New York State, the risk of sunburn is greatest between 11 a.m. and 3 p.m. on summer days because  the angle of insolation (incoming solar radiation) is high. The correct answer is option B.

The duration of sunlight reaching the Earth is approximately 9 seconds.

Angle of insolation is defined at the angle at which the sun's rays strike a particular surface on Earth in order to receive the sun rays and get the heat out from  the sun.

At the angle of 90 degrees it is directly receiving the light from sun at equator and the solar radiations are all gathered at one particular surface thus making the surface a little hot.

The sun strikes at 23 approximately at the tropic of cancer thus this will receive the maximum of heat from sun.

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The type of leukocyte that attaches to an intruder and produces a specific antibody to attack the intruder's antigen is b. B cell.

Leukocytes, also known as white blood cells, are an important part of the immune system and help protect the body against foreign invaders such as bacteria and viruses.

B cells are a type of leukocyte that produce antibodies, which are proteins that specifically recognize and bind to antigens on the surface of foreign invaders. Once the antibody binds to the antigen, it helps to neutralize or destroy the intruder.

The antibodies produced by B cells can neutralize antigens directly, or they can tag them for destruction by other immune cells such as phagocytes.

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Answer:

People who have gene mutations have more treatment options.

Explanation:

Answer: it is recessive.

Explanation:

Both parents are heterozygous for the trait but they do not exhibit the disease themselves if it were a dominant gene both parents would have the disease if they carried the gene for it.

Explanation:

A would be the correct answer

Answer:

B or E

Explanation:

B and E are selected by man-kind not nature itself.

When a little curd is added to milk, the Lactobacillus bacteria present in the curd converts lactose sugar contained in milk into lactic acid.

The increased acidity in milk causes the protein, casein, to coagulate or form lumps, which leads to the formation of curds.

By Newton's second law

F=ma , F=force (unit= N)

m=mass (Kg), a=acceleration (m/s2)

By applying the formula, we can calculate acceleration

a = F/ m

For object A,

Force =15N, Mass=25kg

a= 15/25

acceleration, a=0.6m/s2

For object B,

Force=15N, Mass=50 kg

a=15/50

acceleration,a=0.3m/s2

By calculation, the acceleration of object A is twice the of object B.

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Answer:

See image

Explanation:

Plato

Answer:

Hope this helps :)

Answer:

lololoolol

Explanation:

loloololo

Half of the initial amount (s0 grams) of the radioactive substance will remain  after 1.5 seconds.

The half-life of a radioactive substance can be expressed using the exponential decay formula: s(t) = s0 * (1/2)^(t/half-life). For this particular substance with a half-life of 1.5 seconds, the equation becomes: s(t) = s0 * (1/2)^(t/1.5). To find the amount of substance remaining after 1.5 seconds, substitute t = 1.5 into the equation: s(1.5) = s0 * (1/2)^(1.5/1.5) = s0 * (1/2)^1 = s0 * 0.5. Therefore, after 1.5 seconds, half of the initial amount (s0 grams) of the radioactive substance will remain.

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Answer:

its called asexual reproduction

When a single-celled organism reproduces, asexual reproduction takes place.

Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes.

Asexual reproduction is a mode of reproduction in which a new offspring is produced by a single parent. The new individuals produced are genetically and physically identical to each other, i.e., they are the clones of their parents.

In asexual reproduction, one parent copies itself to form a genetically identical offspring. Sea turtles are an example of an animal that reproduces sexually, a volvox (green algae) is an example of an organism.

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Molecules start moving faster as the kinetic energy of the molecules becomes fast when the temperature increases. That's why, the rate of an enzyme-controlled reaction will change with the temperature.

An enzyme is a catalyst in biology, and its work is to lower the activation energy and increase the rate of reaction. But in this whole process, the enzyme itself is not being used up.

Whenever the temperature changes from high to low or low to high, the kinetic energy of the molecules in a reaction also changes.

Here, the temperature increases from 35°C to 55°C, there will be more kinetic energy.

So, if the kinetic energy is more, there would be more collision between molecules which thus results in more complex substrates formed.

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Answer:Molecules start moving faster as the kinetic energy of the molecules becomes fast when the temperature increases. That's why, the rate of an enzyme-controlled reaction will change with the temperature.

An enzyme is a catalyst in biology, and its work is to lower the activation energy and increase the rate of reaction. But in this whole process, the enzyme itself is not being used up.

Whenever the temperature changes from high to low or low to high, the kinetic energy of the molecules in a reaction also changes.

Here, the temperature increases from 35°C to 55°C, there will be more kinetic energy.

So, if the kinetic energy is more, there would be more collision between molecules which thus results in more complex substrates formed.

Explanation:

Answer: Hello!...........

Nuclear transmutation is the conversion of one chemical element or an isotope into another chemical element. Nuclear transmutation occurs in any process where the number of protons or neutrons in the nucleus of an atom is changed. the action of changing or the state of being changed into another form. (Example : "the transmutation of the political economy of the postwar years was complete")

Explanation:

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Answer:

conversion of one element into another .

Answer:

Here are some ideas:

Hope this helped!

Answer:

i need your big help begging you mark me brainlist always be happy here comes ans=

Explanation:

Plastic is defined as a material that contains an essential ingredient an organic substance of large molecular weight. It is also defined as polymers of long carbon chains. Carbon atoms are linked in chains and are produced in long-chain molecules.

Answer:

Plastic is a synthetic or semi-synthetic polymer material that is commonly used in the manufacturing of a wide range of products due to its versatility and durability. It is made up of long chains of molecules called polymers, which are formed by chemically bonding individual monomers (basic building blocks) together.

Plastic can be molded or shaped into various forms and can be made in a wide range of colors and textures. It is lightweight, strong, and relatively inexpensive to produce, which makes it ideal for use in many applications. Plastic can be found in everyday items such as water bottles, food containers, toys, electronic devices, and many other products.

While plastic has many advantages, it also poses significant environmental challenges. Plastic waste takes hundreds of years to break down and can accumulate in the environment, polluting waterways and harming wildlife. Some types of plastic also contain harmful chemicals that can leach into the environment and pose a risk to human health.

To address these challenges, there is growing interest in developing more sustainable alternatives to traditional plastic, such as biodegradable plastics made from renewable materials, as well as efforts to reduce plastic waste through recycling and other strategies.

Answer:

A. 200 cells per mm3

Explanation:

Answer:

I hope this helps.

Explanation:

Currently, approximately 24 bacterial, viral, and fungal infections are characterized as sexually transmitted diseases (stds).

What are sexually transmitted diseases?

The majority of sexually transmitted diseases (STDs) and illnesses are spread through sexual interaction. Blood, semen, vaginal fluid, and other bodily fluids can carry the bacteria, viruses, or parasites that cause sexually transmitted diseases from one person to another.

These infections can occasionally be spread non-sexually, such as when women give birth to their babies or when they receive blood transfusions or share needles.

STDs occasionally go unnoticed. Sexually transmitted diseases can be acquired from individuals who appear to be in excellent condition and may not even be aware that they are infected.

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Answer:

Tiktaalik fossils reveal how fish evolved into four-legged land animals. The report shows that the animal had a large, robust pelvic girdle, a prominent hip joint, and long hind fins. The powerful fins could have propelled the beast in the water, but also helped it walk on riverbeds, or scramble around on mudflats

Answer:

It processes the environment and sends out signals. It controls movement and provides structure. I hope this helps! :)

Explanation:

Yes, it is possible to identify the sequence of the second strand using knowledge of the nucleotide order of one strand.

The genetic material, DNA, is a double-stranded molecule, meaning it has two strands. A series of complementary nucleotide bases make up the individual strands of each DNA molecule. According to Chargaff's proposed complementary base pairing rule, the bases Adenine (A) and Thymine (T) will always hydrogen pair, whereas Guanine (G) will always pair with Cytosine (C), or A-T, G-C.For instance, if one strand's nucleotide sequence was CTAGCGGATC, the other strand's nucleotide sequence would be GATCGCCTAG. As a result, using the knowledge about the base sequence on one strand, it is possible to infer the sequence of the second strand.

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The answer is D&B.

D. Warm, high-density water sinks to the ocean's bottom.

B. Cool, high-density water sinks to the ocean's bottom.

Answer:

cells are the basic unit of all living things

Answer:

I believe the answer is C. Brainliest if it helped is appreciated! :)

Answer: C.

Explanation: because

In some angiosperm plants, pollen grains express spikes on their surface that help them stick to the pollinator's body and incrceases the chances of cross-fertlization. Option B. Angiosperm.

Different families among the Angiosperm group produce pollen with spikes on their surface.

This is a strategy developed by these plants to ensure cross-fertilization. Let us remember that pollen is the masculine cell released by the masculine organ of the plant. This cell meets the ovocell and fertilize.

In cross-fertilization, pollinators play an important role since they carry pollen from one plant to another one.

To ensure pollen sticks to the pollinator's body and succesfully get to another flower, Angiosperm developed spikes that help the grain to  cling to the pollinator's body. Once the insect get to the new flower, pollen is deposited, increasing the chances of cross-fertilization.

The correct answer is b. Angiosperm

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The hydrolysis of sucrose can be represented by the following chemical equation:

\(C_{12}H_{22}O_{11} + H_2O --> C_{6}H_{12}O_6 + C_{6}H_{12}O_6\)

Sucrose is a common type of sugar that is found naturally in many plants. It is a disaccharide composed of glucose and fructose molecules linked together.

The equation of the hydrolysis of sucrose is given below:

\(C_{12}H_{22}O_{11} + H_2O --> C_{6}H_{12}O_6 + C_{6}H_{12}O_6\)

In this equation, sucrose reacts with water to yield glucose and fructose. This reaction is catalyzed by the enzyme sucrase.

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Answer:

Umm every sense of organs travels in the spinal cord.

Most nerves of one of the sense organs go to the spinal cord before they go to the brain, and that organ is the one that is involved in the reflex action because it happens in a very short time and is controlled by the spinal cord before the brain..

Reflex actions are important because they allow the body to respond quickly to stimuli without waiting for the brain, and they can be especially important in situations where a quick response is necessary to avoid danger, such as when the hand touches hot substances and the hand suddenly goes back, which is due to the motor neuron action of the spinal cord.

Hence, most nerves of one of the sense organs go to the spinal cord before they go to the brain, and that organ is the one that is involved in the reflex action because it happens in a very short time and is controlled by the spinal cord before the brain.

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