please help with my biology

Answer:

As mutations occur, natural selection decides which mutations will live on and which ones will die out. ... If the mutation is beneficial, the mutated organism survives to reproduce, and the mutation gets passed on to its offspring.

Explanation:

I hope it's help u

Answer:

True

Explanation:

A force is a push or pull against something or someone

Answer:

A T G C G T G G T T A T T G G T A T T A A

Explanation:

Answer:fałsz

Explanation:

Answer:

False

Explanation:

I just took the test

Answer:

Explanation:

It's physical appearance

Answer:

B) Trees at high elevations

Explanation:

The atmospheric conditions and precipitation toxicity is most likely to affect trees at high elevations more so than the other answers.

The tree leaves, which are the main key to the tree's photosynthesis, absorb the oxygen and Co2 from the air, which are converted into nutrients. Without proper nutrients, the trees may die out.

Answer:

The correct answer is -

Parental - BB and bb

F1

Genotypes: 100% Bb  

F2

Genotypes: ¼ BB, ½ Bb, ¼ bb

Explanation:

It is given that a cross between a brown and a silver-blue mink produces all brown offspring and it is only possible if brown is dominant over silver blue in true breed cross, assume brown trait is represented by B and silver-blue is b then parents will be

BB and bb

   B    B

b  Bb   Bb

b  Bb   Bb

Cross between F1 individuals: Bb cross Bb

gametes : B, b and B, b

   B     b

B  BB   Bb

b   Bb    bb

the genotype of F2 : 1:2:1 = ¼ BB, ½ Bb, ¼ bb

Los peroxisomas juegan un papel clave en la oxidación de biomoléculas específicas. También contribuyen a la biosíntesis de lípidos de membrana conocidos como plasmalógenos. En las células vegetales, los peroxisomas llevan a cabo funciones adicionales, incluido el reciclaje de carbono del fosfoglicolato durante la fotorrespiración.

Answer:

This binding causes a conformational change in the receptor which enters into the nucleus and binds DNA to activate transcription

Explanation:

Testosterone is a steroid hormone responsible for inducing protein synthesis and growth of tissues with androgen receptors. Testosterone receptors, also known as androgen receptors, are a class of nuclear receptors activated by binding androgenic hormones (e.g. testosterone) in the cytoplasm, whose binding induces a conformational change of the receptors that are subsequently translocated to the nucleus. Within the cell nucleus, these activated receptors form homodimers that bind DNA in order to promote the transcription of target genes capable of regulating cell growth, cell cycle progression and survival.

Answer:

A. The level of sucrose solution will rise in the glass tube because water molecules will pass through the semipermeable membrane into the tube as water potential is higher outside than inside the tube.

B. The apparatus can be modified to measure the rate of osmosis at different temperatures by doing the following :

1. Using a waterbath in order to heat the water and a thermometer to measure different temperatures.

2. Using a scale such as a ruler attached to the glass tube to measure the increase in height at different temperatures.

3. Using a stopwatch to record time taken for unit increase in the height of waterat different temperatures.

Explanation:

A. Osmosis is the movement of water molecules from a region of low solute concentration or high water potential to a region of high solute concentration or low water potential through a semipermeable membrane until equilibrium concentration is attained.

The movement of water molecules is based on a concentration gradient, from a region where there are more water molecules to a region where there are fewer water molecules.

The sucrose solution has a higher solute concentation but lower water potential due to fewer water molecules compared to water in the beaker, therefore, water molecules will pass through the semipermeable membrane into the glass tube resulting in an increase in the level of sucrose solution in the glass tube.

B. The apparatus can be modified to measure the rate of osmosis at different temperatures by doing the following :

1. Using a waterbath in order to heat the water and a thermometer to measure different temperatures.

2. Using a scale such as a ruler attached to the glass tube to measure the increase in height at different temperatures.

3. Using a stopwatch to record time taken for unit increase in the height of waterat different temperatures.

Answer:

diesel fuel is C12H23 whereas Methane is CH4.

Explanation:

The chemical formula for common diesel fuel is C12H23 while o the other hand, the formal of biogas such as Methane which is CH4. Both are organic compounds due to the presence of hydrogen and carbon. Biofuel and biogas are still considered energy-dense molecules because they have more mass and produced large amount of energy from it. The main difference between Carbondioxide gas and biofuel is that there is no hydrogen present in the formula of carbondioxide gas.

Answer:

The color of the ink that was used and where it came from

Explanation:

i took the test and im like 87% sure this is right

Answer:

Both plant and animal cells

Explanation:

Answer:both plant cells and animal cells

Explanation:generally, cells obtain energy from food during cellular respiration where glycolysis takes place

Answer: A

Explanation:

I’m smart duhh

Answer: A

Explanation: It is resonable

Complete question:

Question 49 (1 point) The following questions refer to the description below. You have read that soapberry bugs, Jadera haematoloma, adapt to available food sources. For example, in southern Florida, soapberry bugs feed on seeds of a native plant, the balloon vine. In central Florida, the balloon vine is rare and soapberry bugs have switched to eating seeds of an introduced species, the golden rain tree. The seeds of the golden rain tree fruits are much closer to the fruit surface than the seeds of the native balloon vine fruit. As a result, natural selection results in beaks that are shorter in soapberry bugs that utilize golden rain tree fruits than those that feed on balloon vine fruit seeds.

What type of natural selection do you think is acting on these bugs if we consider the golden rain tree bugs and balloon vines bugs together as one group?

Answer:

Explanation:

Due to technical problems, you will find the complete explanation in the attached files

Explanation:

Because trees are sensitive to local climate conditions, such as rain and temperature, they give scientists some information about that area's local climate in the past. For example, tree rings usually grow wider in warm, wet years and they are thinner in years when it is cold and dry.

Answer:

Explanation:

Climate scientists compare the tree growth records to local weather records. For locations where a good statistical match exists between tree growth and temperature or precipitation during the period of overlap, the ring widths can be used to estimate past temperature or precipitation over the lifetime of the tree.

The given observation best indicates that the phytoplankton provides nutrients to consumers in the ecosystem.

An ecosystem may be defined as a place or an area where organisms of different species are present together and interact with one another for their need.

Phytoplanktons belong to lower trophic levels in the aquatic ecosystem. The organisms of higher trophic levels depend on it for the need of energy.

Therefore, the given observation best indicates that the phytoplankton provides nutrients to consumers in the ecosystem.

To learn more about the Ecosystem, refer to the link;

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Answer:

1. High osmotic pressure due to the hypersaline nature of marine habitats

2. The dependence of flowering plants on pollinating insects for fertilization. These insect pollinators are however, absent in the marine environment.

3. Competition from already-established sea weeds and grasses provides another challenge to flowering plants invadingnthe oceans.

4. Constant changes in the environment as well as temperature changes too

Explanation:

The marine environment is a hypersaline environment with a high salt concentration relative to that of the plant cell. Due to high salt concentration of the marine environment, their is high osmotic pressure on living oragnisms found therein. Organisms must have well-adapted osmo-regulatory mechanisms to counteract the high osmotic pressure of their environment. Therefore, flowering plants face the challenge of removing excess salt from their cells or else lose water to their environment, hence resulting in the death of the plant. However, most flowering plants lack this ability and thus, have found it difficult to invade the oceans.

Flowering plants depends on insect-pollinators for fertilization. However, these insect are not found in the oceans, and as such, it is difficult for flowering plants to invade the oceans.

Well-adapted seaweeds and grasses serve as competitors for any invading flowering plant. Since the flowering plants are not yet adapted for life in marine habitats, they lose out in this competition.

The oceans are constantly in a state of frequent turbulence and change due to tides and currents. Also, the temperature of the oceans are very low and fluctuations in the temperatures of the ocean do occur, utimately serving as obstacles to invading flowering plants to adapt to life in the oceans and seas.

Explanation:

Oxygen is also called a life supporting gas because oxygen is required in the process of cellular respiration.

Options please! Otherwise how are we supposed to help you, sorry.

Answer:

i think its c.............

Answer:

The answer is C. Biomes

Explanation:

Large areas with similar climate and weather are called biomes.

Answer:

C.

Explanation:

i just did this question 5 minutes ago.

A company recently tested the effectiveness of three new insecticides, and based on the results of the experiment, the company concluded that insecticide X would be the best one to use because it killed a greater percentage of all three species than did insecticides Y and Z, which are in option C.

The insecticide is given for the destruction or killing of the insects, and the intensity of the insecticides varies depending on the insects and their poison. There are three insecticides: X, Y, and Z, and X kills a higher percentage of all ants than the other two, so it is preferred.

Hence, A company recently tested the effectiveness of three new insecticides, and based on the results of the experiment, the company concluded that insecticide X would be the best one to use because it killed a greater percentage of all three species than did insecticides Y and Z, which are in option C.

Learn more about the insecticide here.

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Answer:

A and either B or C

Explanation:

check my reasoning cause i'm not 100% percent sure most likely the wolf would die from heat due to the layers of fur and body fat. also c and d have nothing to do with the wolf not being able to survive, in fact c is beneficial

Answer:

See below

Explanation:

There are two different types of chromosomes coming from the ribosomes of a single cell. This is simply because you inherit traits from both your mother and father when you are given birth to. So, there are two types of genes which do not pair and therefore form two types of chromosomes.

Answer:

true

Explanation:

Answer:

most ocean pollution comes from plastic waste and garbage flood

Answer:

Ocean pollution is caused by the introduction of toxic materials and harmful pollutants such as agricultural and industrial waste, chemicals, oil spills, and plastic litter into the ocean waters.

Answer:

i think answer is 3 and 4

Explanation:

peristalsis is located at esophagus and in our digestive system

The parts where peristalsis will take place are ; ( C )  parts 3 and 4

Peristalsis is a series of muscle contraction occurring in the digestive system of Humans also these series of muscle contraction can be seen in tubes connecting the human kidney and bladder as well.  

From the diagram parts 3 ( esophagus )and 4 ( intestines ) are part of the human digestive system and peristalsis is very evident in these regions in the human body.

Hence we can conclude that The parts where peristalsis will take place are  3 and 4

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Answer:

A. long (front-to-back), vertically low skull shape

Explanation: