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Which are characteristics of life?

Answer:

C. Allows some materials to pass.

Explanation:

Answer:

c

Explanation:

Being selectively permeable means that it selects what comes in and what goes out.

Answer:

Plastids are known as kitchen of a cell because some kinds of plastids (chloroplasts) play a vital role in the process of photosynthesis in which plants make their own food by sunlight,water and nutrients.

Explanation:

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Answer:Plastids are known as kitchen of a cell because some kinds of plastids (chloroplasts) play a vital role in the process of photosynthesis in which plants make their own food by sunlight,water and nutrients, which makes it more better for animals to eat. And the plant provides healthy nutrients for them.

Answer:

The respiration rate increases to produce more ATP.

Explanation:

Running requires energy so the cells need to make more ATP through cellular respiration.

Answer:

d. cause iron in ocean water and terrestrial rocks to rust (oxidize)

Explanation:

The Great Oxygenation Event (GOE) refers to the introduction of huge amounts of free oxygen into the atmosphere. This phenomenon was caused by photosynthetic cyanobacteria during the Paleoproterozoic, i.e., 2.5–2.2 billion years ago. During this period, oxidized iron minerals appeared in the soil and also were deposited on the deep ocean floor due to reactions with oxygen in the seawater from oceans. Moreover, during the Devonian (approximately 410- 360 million years ago), land plants greened the continents and it had brought higher levels of atmospheric oxygen, thereby increasing the amount of oxidized iron in the soil and rocks.

Answer: Radio telescopes look toward the heavens to view planets, comets, giant clouds of gas and dust, stars, and galaxies

Explanation: By studying the radio waves originating from these sources, astronomers can learn about their composition, structure, and motion.

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Answer:

75%

Explanation:

This question involves a single gene coding for the ability to taste the chemical PTC. The allele coding for the ability to taste (T) is dominant over the allele coding for the inability to taste (t). This means that an heterozygous individual will have the ability to taste PTC.

According to this question, if two heterozygous tasters (Tt) cross to have a large family i.e. Tt × Tt, the following gametes will be produced by each parent;

Tt = T and t

Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:

TT, Tt, Tt - Tasters (3/4 or 75%)

tt - Non-taster (1/4 or 25%)

Note that based on the question asked, there is a 75% probability that their first child will be a taster because there is equal segregation of alleles into gametes.

Answer: C

Explanation: the ecosystem is metastable, so an increase in the keystone species would be accommodated. Introductionof a nonnative species is likely to generate significant biotic change to the environment.

Answer:

23

Explanation:

Answer:

3

Explanation:

The only exception to the six chromosomes per cell rule for mosquitoes would be the gametes, or sex cells. When cells in the ovary or teste undergo meiosis, the result is egg or sperm cells which are haploid, meaning that they have just one copy of each chromosome, for a total of three chromosomes

Answer:it means a verity of life

Explanation:because like you said diversity means verity and bio means life

Answer: letter D

Explanation: because if you can see it is real small so it means it is a fringing reef and its the first mountain which leaving x the fludding if you put them in order it would be YZX

Answer:

D

Explanation:

Answer:

taxonomy

Explanation:

Answer:

ATP, or adenosine triphosphate

Explanation:

Answer:

in the next generation 75% of the plants will have purple flowers and 25 percent will have white flowers

Also 75% of the flowers will have green pods and 25% of the flowers will have yellow pods

Explanation:

Answer:

•Water conservation

•plastic waste reduction

•Stormwater management

•Green agriculture

Answer:

B) letter T and letter R store the genetic material necessary for replication of the cell

T-nucleus and R-mitochondria

The statement that correctly describes an interaction between organelles is :  ( D ) Letter U and Letter R are involved with the processes of transcription and translation for the cell.

Letter U represents  the Nucleus of the plant cell model attached while the Letter R represents the cytoplasm of the cell model.

The nucleus of a cell contains the genetic material ( DNA ) of the cell while the cytoplasm fills up the cell and is enclosed by the plasma cell membrane of the cell. Transcription involves the synthesis of RNA from a DNA template contained in the Nucleus and this process involves, The nucleus and cytoplasm of a cell.

Hence we can conclude that The statement that correctly describes an interaction between organelles is :  ( D ) Letter U and Letter R are involved with the processes of transcription and translation for the cell.

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The reactants, products and function of photosynthesis are required.

Reactants are carbon dioxide [tex](CO_2)[/tex], water [tex](H_2O)[/tex] and light.

Products are glucose [tex](C_6H_{12}O_6)[/tex] and oxygen [tex]O_2[/tex].

The basic function photosynthesis is to produce fuel.

The reaction of photosynthesis is

[tex]6CO_2+6H_2O\overset{light}{\rightarrow}C_6H_{12}O_6+6O_2[/tex]

The reactants are carbon dioxide [tex](CO_2)[/tex], water [tex](H_2O)[/tex] and light.

The products are glucose [tex](C_6H_{12}O_6)[/tex] and oxygen [tex]O_2[/tex].

Function of photosynthesis.

Photosynthesis is used by plants to produce fuel which provides energy for their functioning. The fuel is stored in the form of sugars.

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Answer:

Null Hypothesis -

The observed frequency is approximately equal to the expected frequency of phenotype.

Explanation:

Pure Breeding Cross - TTww x ttWW

Genotype of offspring in F2 generation - TtWw

Null Hypothesis -

The observed frequency is approximately equal to the expected frequency of phenotype.

The chi square analysis is attached

The degree of freedom for this question is 3

The p value for X^2 estimated through chi square test is 0.5

Hence the null hypothesis is accepted.

Answer:

cats

Explanation:

n

Answer:

Pheomelanin

Explanation:

Dark-skinned individuals produce more melanin than those with pale skin.

Light-skinned people typically have a greater proportion of pigment in their skin Pheomelanin, Dark-skinned persons produce more melanin than those with pale skin.Thus, option "B" is correct

Eumelanin is black or brown tint and pheomelanin is red or yellow pigment.

Individual who create lots of pheomelanin tend to have lighter skin, often because of freckling.

Freckles occur when melanocytes clump together. Melanocytes are generally scattered rather evenly in the skin.

Thus, option "B" is correct,  Dark-skinned individuals produce more melanin than those with pale skin.

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Answer:

chloroplast

Explanation:

its is the green pigment in the plant. it allows photosynthesis to take place

Answer:

Herbivores are tertiary consumers. Carnivores are primary consumers. Omnivores are also primary consumers.

Explanation:

we got three types of consumers :

The correct answer is C. Herbivores are tertiary consumers. Carnivores are primary consumers. Omnivores are also primary consumers.

There are 4 types of consumers :

1. Omnivores are also primary consumers.

2. Carnivores are primary consumers.

3. Herbivores are tertiary consumers.

4. Decomposers are known to be fungi, bacteria, invertebrates.

An ecosystem is an area where all living organisms including plants, animals, Homosapiens, microorganisms. It also has abiotic and biotic factors.

Hence concluded that C. Herbivores are tertiary consumers. Carnivores are primary consumers. Omnivores are also primary consumers, which describes the different classifications of consumers in ecosystems.

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Answer:

A. are deciduous

Explanation:

Ginkgo trees are broadleaf trees or deciduous trees.

Answer: The answer is A .Are deciduous

Explanation:)  Hope this helps brainliest would be appreciated

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Answer:

four requirements for natural selection are given below:

Mutations

Variation in reproductive success

Sexual reproduction

Adaptations

Explanation:

Answer:

row 3

Explanation:

xylem transport water and nutrient absorbed by the root to other part of the plant

Answer:

Row 3

Explanation:

I took the exam

Answer: Mary Mallon was able to spread the typhoid bacteria to the families she cooked for even as cooking kills bacteria because she was a healthy carrier of salmonella typhi who prepared certain foods for these families, that doesn't require cooking, without vigorously scrubbing her hands.

Explanation:

The genus salmonella consists of a group of bacilli which can affect man leading to the following conditions:

--> Enteric Fever

--> Gastroenteritis

--> Septicaemia and

--> Carrier state or condition.

Salmonella typi causes the enteric fever called TYPHOID FEVER. A healthy individual can be infected with the bacteria through injection of faecal contaminated food ( faeco- oral route). On reaching the gut,the organism attach themselves to the intestinal villi penetrating the lamina propria and submucosa. Their major factor of virulence is the inability to be killed after being phagocytosed by polymorphs and macrophages. They enter the blood stream through the thoracic duct causing transient bacteriaemia. During this period, the bacilli are then seeded into the liver, kidney and gall bladder where further multiplication occurs. The massive discharge of these bacilli from gall bladder leads to onset of the clinical disease.

These bacilli tends to persist in the kidney and gall bladder( as it's a good culture media for the organism). These are seen in individuals who become carriers following inapparent infection and they are called HEALTHY CARRIERS. They shed the bacilli intermittently from their faeces and urine

Mary Mallon, an Irish cook, was a healthy carrier of salmonella typhi who constantly shed the bacteria in her faeces and urine. Although the bacilli is destroyed when subjected to high temperature ( when cooking), the families she cooked for still came down with the illness. This was so because, since the bacteria can be transmitted through faeco- oral route, she wasn't educated enough to vigorously scrub her hands before handling foods that doesn't require cooking,for example vegetable salads.

Answer:

Water puts pressure depends on their amount.

Explanation:

On the left side, there is less quantity of water in the tube that put less pressure on the bag present at the bottom and the bag swells slightly while on the other hand, on the right side, there is more amount of water in the tube that puts large pressure on the bag located at the bottom and as a result it swells higher than the other bag so we can conclude that more water puts more pressure and less water puts less pressure.

Answer:

A person with type A blood receiving a transfusion of type B or AB blood would have an ABO incompatibility reaction. In an ABO incompatibility reaction, your immune system attacks the new blood cells and destroys them. If you have type AB blood, you have both A and B antigens .