Some specifically selected hormones, cholesterol, LDL and iron enter cells via
A) exocytosis
B) endocytosis
C) pinocytosis
D) receptor-mediated endocytosis

Primates have long growth and development periods because: they have larger brains and higher intelligence as compared to other organisms.

Primates is the order of the class Mammalia. They are different and more advanced from all the other animals. They have more intelligence, five-digit feet and hand, more vision power than smelling power and slower growth. Their life span is also very large.

Brain is the most complex and largest organ of the body. It is the master regulator of all the actions of the body. The brain is divided into left and right hemispheres. There are three sections of the brain: forebrain, midbrain and hindbrain.

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The endomembrane system encompasses the organelles that mediate the importa, export of molecules, that is, the transport of molecules from the environment to the cytoplasm and from the cytoplasm to the environment, respectively. The organelles that participate in such activities are the endoplasmic reticulum, the golgi apparatus, vacuoles and the cell membrane. Mithocondria's main purpose is energy production through oxidation of the carbohydrates/lipids we consume, thus, it is not related to molecule transport, and it can not be part of the endomembrane system.

Protein synthesis is the process by which information is taken from DNA, passed to RNA by a process called transcription and finally to protein by another process called translation.

Mutation 1

5' AGTTTGCACTTGTAGAGGATGAAGCCGCACGTACATCA 3'

Mutation 1 (transcription): With RNA we use uracil instead of thyimine. We also use the reverse complementary sequence. Since transcription occurs from 3' to 5'.

3' UCAAACGUGAACAUCUCCUACUUCGGCGUGCAUGUAGU 5'

Same sequence but from 5' - 3':

5' UGA-UGU-ACG-UGC-GGC-UUC-AUC-CUC-UAC-AAG-UGC-AAA-CU 3'

Mutation 1 (translation) Finally, the translation occurs from 5' to 3' and we can known the protein sequence using the next table:

Stop-Cys-Thr-Cys-Gly-Phe-Ile-Leu-Tyr-Lys-CysLys

It should be noted that each chain will give rise to different amino acid sequences.

The individual with the lowest risk of getting cancer is someone getting a heart bypass surgery. Even though surgeries have riks, cancer is not one of them, and the rest of the conditions (HPV, hormone therapy and smoking) are fact

Living in rural environments can be difficult due to the distance from the major centers and amenities of urbanization, since the way in which the human pecies has adapted to live in a community is direct linked to technologies that are sometimes nor available in a rural region. The lack of diversity of functions can also become a hindrance, since the rural region have agricultural activities or related to agriculture as the marjor, or in some cases the only, possibility of branch of work.

To the environmental the increase in people living in a rural region is the increased comsumption and exploitation of local natural resources, as well as the urban expansion for housing construction and other infrastructures. The population growth in the region can inevitably leads to climate changes and modifications in the fauna and flora.

Triglycerides are the molecules that provide the greatest energy storage capacity in animal cells.

Triglycerides are the type of fat also called lipids that are found in your blood. When you eat, your body converts calories that it does not need to use into triglyceride molecules. The triglycerides are stored in the fat cells. After the hormones release triglycerides for energy between eating. Sugary food, sweat drinks, saturated fats, refined grains, alcohol, and foods having high-calorie all lead to high levels of triglycerides. The healthcare provider classifies high triglyceride levels i.e. Mild levels as 150-199 mg/dL, Moderate level has 200-499 mg/dL, and Severe levels has Greater than 500 mg/dL. Very high triglycerides may cause blocking of the blood supply to the heart or brain. Symptoms of lower blood supply to your heart could be chest pain.

So we can conclude that option C is the correct answer.

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Solution:

The genotype is the collection of genes of an individual, that is, it is the genetic information that a particular organism possesses. This means that in a broad sense, the term genotype refers to the genetic makeup of an organism.

We can conclude that the correct answer is:

C) Genotype

The true statement regarding the relationship between cells and organism is that cells make up the basic structure of an organism, and they perform basic life functions for the organism (option A).

A cell is the basic unit of a living organism, consisting of a quantity of protoplasm surrounded by a cell membrane, which is able to synthesize proteins and replicate itself.

A cell is the basic unit of every living organisms meaning that a performs the basic function of living organisms. For example, the photosynthetic ability of a cell is a function of the chloroplast in the cell.

According to the cell theory proposed in the 1890's, which is the scientific theory that all living organisms are made of cells as the smallest functional unit, the cell is the basic functional and structural unit of living things.

Therefore, it can be said that a cell is the basic functional unit of the cell.

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The type of volcano was likely responsible for the eruption volcano to its formation would be the composite volcano wherein it usually yields large and violent eruptions.

A volcano has been defined as the hill or mountain or it has an opening in a planet or moon's crust from which molten rock, warm gases, and materials erupt. It has a landform where molten rocks erupt through the surface of the planet and volcano moutains open downwards to molten rocks.

According to Geologists there's are four types of volcanoes and these are lava domes, shield volcanoes, composite volcanoes, and cinder cones.

Therefore, The type of volcano was likely responsible for the eruption volcano to its formation would be the composite volcano wherein it usually yields large and violent eruptions.

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The electrical energy consumed is 0.3 kWh. Electrical energy is energy related to forces on electrically charged particles and electrically charged particle movement.

Therefore,

The amount of electrical energy consumed can be calculated as follows:

E = Pt

where;

P is the power (kW)

t is time (h)

E = 1.2 kW x 0.25 h

E = 0.3 kWh

As a result, the total amount of electrical energy consumed is 0.3 kWh.

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Answer: Gathering new evidence using new technologies or procedures most likely will lead scientists to change or improve an existing scientific theory (Option D).

Explanation:

Answer: photosynthesis

Explanation:

photosynthesis

Plants use energy from sunlight to turn water and carbon dioxide into an energy-rich sugar called glucose. This process is called photosynthesis, which means “making things with light”. Photosynthesis takes place inside capsules in the leaf cells, called CHLOROPLASTS.

The observation which best supports the claim that Elysia chlorotica is capable of photosynthesis is number 4. The ability to photosynthesize doesn't mean it won't be able to eat other food sources when abailable, but that it will be able to survive and grow in abscense of food sources if it is exposed to light, as light is necessary to obtain the energy for the process of photosyntesis.

Answer:

A: lower, speed

Explanation:

Enzymes definitely speed up chemical reactions because they are proteins that act as biological catalysts. Catalysts speed up reactions without being used up themselves. They are reusable.

Lowering the activation energy makes the reaction faster because less energy is required to do the same task.

B and C do not make sense because speed activation energy doesn't make sense and slow up doesn't make sense either.

The statement which best describes an example of how climate change leads to decreased biodiversity is that sea levels rise due to increased temperatures, flooding coastal areas and leading to an unstable ecosystem and is denoted as option D.

This is a term which consists if all organisms and their interaction with their physical environment and is affected or influenced by different types of factors such as human and environmental factors.

An example is climate change which causes sea levels to rise thereby flooding areas. It leads to loss of habitat and an unstable ecosystem which decreases the biodiversity.

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The phase of the cell cycle in which chromosomes replicate is the S phase.

This is referred to as the series of events that take place in a cell during the process of reproduction an d in this scenario , the parent cells divide which gives rise to two daughter cells. Chromosome on the other hand is a thread like structure which is made up of DNA.

The S phase occurs between G₁ phase and G₂ phase and is an important process in mitosis as the DNA in the nucleus are synthesized and the traits present are usually passed to the offspring.

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The cerebral hemisphere has four lobes, so the above statement is false.

The Cerebral cortex also known as gray matter which comprises the brain’s outermost layer of nerve cell tissue and has a wrinkled appearance from its many folds and grooves. These folds have many groups called sulci and raised areas are called gyri.

These folds add to the surface area of cerebral cortex which allows large amount of information to be processed by Nerve cells. Cerebral cortex makes about half of the total brain mass. It consists of 6 layers which contains approximately 14 to 16 billion Nerve cells, thickness of about 0. 2 mm to 4 mm.

It is divided into four lobes. They are Frontal, Parietal, Temporal and Occipital which is responsible for processing different types of information.

It consist of nerve cell bodies which include end portion of Nerve cells called dendrites that's why it is also called gray matter. These dendrites receive chemical message from another cell cerebral cortex. It is gray in colour because lack of fatty covering of nerve which is called my myelin.

Thus, the cerebral hemisphere has four lobes, so the above statement is false.

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The way in which a neuron goes from a negative charge to positive charge is that: C. an action potential opens the gate sodium channels stay behind, and floods the cell with positive ions.

In Science, a neuron can be defined as a nerve cell that is saddled with the responsibility of transmitting electrical signal (impulses) down an axon across a cellular membrane of the body of a living organism, especially through an action potential.

Generally speaking, the neuron comprises different parts and are of different types which include the following:

An action potential simply refers to a sudden, fast change in electrical (voltage) potential with respect to the transmission of an impulse to a receptor, across a cellular membrane such as the following:

In conclusion, a neuron changes from a negative charge to positive charge because a resting potential neuron has a negative charge while sodium ions have a positive charge.

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Actin and myosin  come in and out of the cell to make it thicker or thinner which changes its length.

The correct option is B.

Myosin contracts the myofibrils by sliding along myosin within the sarcomere, a process that demands ATP. Numerous molecules, including as calcium, troponin, and tropomyosin, that control muscle contractions and motor behaviors have also been found by researchers.

All hundred billion cells that make up the human body depend on myosins for growth and tissue creation, respiration, reproduction, communication, reshaping, and motion. Furthermore, myosins allow the quick invasion of bacteria, viruses, and parasites into eukaryotes host cells.

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The complete question is-

What is involve in a muscle contraction ?

A-The gap junction between the cells pull them close together  which shortens the muscle.

B-Actin and myosin  come in and out of the cell to make it thicker or thinner which changes its length.

C-Myofibrils in the muscle shorten ands lengthen to make the muscle D-contract and extend.

D-The extra nuclei trigger nerve to stiffen  the muscles  and make them shorter.

An example of predation is D) Chickens peck at the ground and eat many types of insects.

Predation is a type of biological interaction in which a predator feeds on its prey. In the above example, chickens are the predators that make insects their prey.

In order for an ecosystem to be healthy, predators are essential. There is more food available for the survival and success of healthy prey species after predators take away vulnerable prey, such as the young, old, sick, injured, or very young. Predators also aid in reducing the size of prey populations, which slows the spread of illness.

What are the types of biological interaction?

Mutualism, commensalism, competition, and predation are the four basic forms of two-way biological interactions between species found in ecological webs (which include herbivory and parasitism).

Therefore, D) Chickens pecking at the ground and eating many types of insects is an example of predation.

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Step 1:

The process of DNA transcription occurs from the 5' to 3' being the DNA sequence in the correct order for transcription as follow:

5' TAT GGT AGC GCT AGG ATT TAC ATA AAA TAG CCC CAT 3'

Step 2:

Resulting in the mRNA:

5' AUA CCA UCG CGA UCC UAA AUG UAU UUU AUC GGG GUA 3'

- Being the nucleotide thymine replaced by uracil in the formation of the RNA strand.

Step 3:

The codons sequence that form proline and tyrosine are:

Proline: CCA;

Tyrosine: UAU.

Answer: A

Explanation:

!!!!

Answer:

Because the structures benefited the cell​

Explanation:

Scientists believe that host cells and bacteria formed a mutually beneficial endosymbiotic relationship when the host cells ingested aerobic bacteria and cyanobacteria but did not destroy them.

Given the characteristics provided: a spinal column and climbing walls; we can classify the gecko as a vertebrate because it has a spinal column (option D).

To make a more specific classification, we would need to know more characteristics of the gecko.

Generally , these proteins are located in the nuclear lamina.

What is Lamin A ?

Instructions for creating a number of slightly different proteins known as lamins are provided by the LMNA gene. Most of the cells in the body make lamin A and lamin C, the two main proteins produced by this gene. These proteins are constructed from a pattern of virtually identical protein building units (amino acids). Lamin A is longer than lamin C due to the minute variation in the sequence.

These proteins are specifically found in the nuclear lamina, a layer of intermediate filaments and other proteins that is connected to the nuclear envelope's inner membrane. The nuclear envelope controls how molecules enter and exit the nucleus.

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Phosphorus is very important for life because it makes up important structures in animals, supporting and allowing life.

In the biogeochemical cycle, during the immobilization process, inorganic phosphorus is converted into organic phosphorus and can be absorbed by living cells in the soil.

Therefore, the name of the process that converts inorganic phosphorus into organic phosphorus is immobilization.

In the monohybrid cross, the possible offspring of a cross between two organisms is evaluated, but only one characteristic is taken into account. While in the dihybrid cross two characteristics are evaluated.

However, unlike the monohybrid cross, in the dihybrid cross, combinations of alleles must be made in order to obtain all possible gametes and thus perform the punnet square properly. An example of a dihybrid cross and allele combination is shown in the following image:

Finally, a test cross refers to these two examples. A test cross taking into account only one trait is called a monohybrid cross. A test cross using 2 traits is a dihybrid cross.

you can only have 2 alleles per gene

When a trait has three or more distinct alleles, we refer to it as having multiple alleles inheritance. The human ABO blood type alleles/trait is an example of a trait with multiple alleles.

Chlorophyl absorbs the light at both endpoints of the visual expectrum, which means that ir absorbs the light of the blue and red wavelenghts.

The red wavelength is absorved on a higher rate than the blue wavelength.