Which organisms obtain energy from dead or decaying matter? Select two options.

groundhogs
daisies
earthworms
bacteria
humans
phytoplankton

Answer:

70 km/hr

Explanation:

Distance between town A and B = 210 km

Della's speed = 60 km/hr

Time taken by Della = distance / speed

Time taken by Della = 210 km / 60km/ hr

Time taken by Della = 3.5 hours

Since Nick left half an hour later Than Della ;

Then, Nick's travel time = 3.5 - 0.5 = 3 hours

Nick's average speed = Distance /time

Nick's average speed = 210 / 3 = 70km/hr

Answer:

in order to hang from trees easier

Explanation:

Answer:D

Explanation:

Answer:

C.

contains genetic information and serves as the control center of the cell

Explanation:

i hope it's help

The plasma membrane is found in all living cells and serves as a boundary between the cell and its external environment.

The plasma membrane is a thin and fragile membrane that encloses the cytoplasm of cells in prokaryotes and eukaryotes. It is sometimes referred to as the cell membrane, and it is a crucial organelle for maintaining the integrity and functions of cells. In addition, it is responsible for a variety of cellular processes and communications.

The plasma membrane is found on the outermost surface of cells in both eukaryotes and prokaryotes. It separates the cell from the external environment, and it is responsible for regulating the movement of materials in and out of the cell. The plasma membrane in eukaryotic cells forms a boundary between the cytoplasm and the extracellular fluid.

It is composed of a lipid bilayer consisting of phospholipids, glycolipids, and cholesterol, and it also contains proteins, which are embedded in the membrane or attached to its surface. The plasma membrane in prokaryotic cells is similar in structure to that of eukaryotic cells. It is composed of a phospholipid bilayer that is embedded with proteins, but it is much simpler in structure.

Prokaryotic cells have a cell wall that lies outside the plasma membrane, which provides additional protection and support to the cell. Plasmodesmata are channels that are formed through the plasma membranes of adjacent plant cells. They provide a pathway for the transport of materials and communication between cells.

In addition, gap junctions are structures found in animal cells that allow for the passage of small molecules between cells. Tight junctions are another type of intercellular junction that form a barrier between cells, preventing the passage of substances through the extracellular space.

The plasma membrane is a crucial organelle for maintaining the integrity and functions of cells. It is responsible for regulating the movement of materials in and out of the cell, as well as for cellular processes and communication.

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Answer:

c) septum

Explanation:

Hope it helps :)

All of the following are parts of the respiratory system except septum.

The network of organs and tissues that aids in breathing is known as the respiratory system.

It consists of your blood vessels, lungs, and airways. The respiratory system also includes the muscles that propel your lungs. Together, these components help the body circulate oxygen and eliminate waste gases like carbon dioxide.

Numerous components of the respiratory system work together to support breathing.

The organs and other body parts involved in breathing when you exchange oxygen and carbon dioxide are known as the respiratory system.

Therefore, All of the following are parts of the respiratory system except septum.

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Answer:

Physical Weathering

Explanation:

Mechanical breakdown of rocks

1. The exocrine function is stimulated by this hormone produced in the anterior pituitary: follicle-stimulating hormone (FSH), and produces ova (eggs) in the female.

2. The endocrine function is stimulated by this hormone in the anterior pituitary: luteinizing hormone (LH), and produces estrogen and progesterone in the female.

3. The exocrine function is stimulated by this hormone produced in the anterior pituitary: luteinizing hormone (LH), and produces sperm in the male.

4. The endocrine function is stimulated by this hormone in the anterior pituitary: follicle-stimulating hormone (FSH), and produces testosterone in the male.

1. The exocrine function of the reproductive system in females is stimulated by the hormone produced in the anterior pituitary called follicle-stimulating hormone (FSH), which promotes the production of ovarian follicles. The exocrine product in females refers to the release of eggs or oocytes from the ovaries during ovulation.

2. The endocrine function of the reproductive system in females is stimulated by the hormone luteinizing hormone (LH) produced in the anterior pituitary. LH triggers the release of estrogen and progesterone from the ovaries, which regulate the menstrual cycle, promote the development of the uterine lining, and prepare the body for pregnancy.

3. The exocrine function of the reproductive system in males is stimulated by the hormone produced in the anterior pituitary called luteinizing hormone (LH), which stimulates the production of testosterone in the testes. Testosterone is the primary male sex hormone and is responsible for the development of male reproductive organs and secondary sexual characteristics.

4. The endocrine function of the reproductive system in males is stimulated by the hormone follicle-stimulating hormone (FSH) produced in the anterior pituitary. FSH promotes the production of sperm cells (spermatogenesis) in the testes.

Overall, the reproductive system has both endocrine and exocrine functions, with the anterior pituitary gland playing a crucial role in regulating these functions through the production of specific hormones.

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Carbon, hydrogen, and oxygen are the three major elements found in organic compounds. Apart from that, nitrogen, phosphorus, etc. are also seen in organic molecules or compounds.

Organic molecule examples are carbohydrates, proteins, lipids, etc. that are found in the bodies of living animals and plants. Carbohydrate molecules, such as glucose, are composed entirely of carbon, hydrogen, and oxygen, whereas proteins are composed entirely of amino acids. Each amino acid is made up of carbon, hydrogen, oxygen, and nitrogen, and a lipid is entirely made up of only carbon and hydrogen.

In organic molecules, these three remain in high proportion, as a result of which they can be easily broken down by the enzymes in our body or by decomposers after death. All three of these enter the atmosphere via the carbon cycle, for example.

Hence Carbon, hydrogen, and oxygen are the three major elements found in organic compounds.

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Answer:

18 chromosomes

Explanation:

if their somatic cell have 36 chromosomes then gamete have 18 chromosomes. because meiosis is a reduction division and produce gametes with half number of chromosomes. so their gametes recieve 18 chromosomes.

The example that includes only chemical changes that occur in the digestive process is the reaction of saliva, stomach acid, bile, and pancreatic juices with food. Option D.

Chemical changes refer to changes to the chemical properties of substances. In biological reactions, these substances are referred to as reactants.

Chemical changes are different from physical changes. In physical changes, only the physical properties of substances are altered while their chemical properties remain intact.

When a substance changes chemically, its physical properties most often change along. However, this is not in all cases.

Thus, looking at the examples given, their classification into either physical or chemical changes is as follows:

When saliva, stomach acid, bile, and pancreatic juices react with food, the chemical properties of food change because the enzymes convert different components of food from one form to another as part of the process of digestion.

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The division of a cell with multiple chromosomes is more difficult than the division of a bacterial cell that has a single circular chromosome because multiple because eukaryotic cell division involves regulating DNA replication at different points, which requires the presence of different cyclin factors that trigger DNA replication during the S phase.

The synthesis S phase of DNA replication is the period in the cell cycle where DNA replication occurs, which is a more complex process in eukaryotic cells because they have many chromosomes to regulate during this phenomenon, in contrast to the single chromosome of prokaryotic cells.

Therefore, with this data, we can see that the synthesis S phase of DNA replication involves a more complex process in eukaryotic cells due to the presence of different chromosomes to be controlled through cyclins and kinase factors during this process.

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Answer:

Remember apples in a tree, Cars in a garage

Explanation:

Normal DNA sequence:

TAC CAC GTG GAC TGA GGA CTC CTC TTC AGA CGG CAA TGA

Sickle Cell DNA Sequence:

TAC CAC GTG GAC TGA GGA CAC CTC TTC AGA CGG CAA TGA

I hope this helps!

Half will have red flowers and half will have white flowers (option c).

In camellia plants, flower color is controlled by a single gene with codominant alleles. In this case, one parent plant has red flowers (R), while the other parent plant has white flowers (WW).

When two organisms with codominant alleles are crossed, both alleles are expressed equally in the offspring. Therefore, in this cross, the offspring will inherit one allele for red flowers (R) from the red-flowered parent and one allele for white flowers (W) from the white-flowered parent.

The possible combinations of alleles that the offspring can inherit are RW and RW.

When the alleles RW and RW combine, the resulting genotypes are RR (red-flowered) and RW (pink-flowered). However, since the allele for white flowers (W) is recessive to the allele for red flowers (R), the plants with the RW genotype will exhibit the dominant red flower phenotype.

Therefore, half of the offspring will have the RR genotype and display red flowers, while the other half will have the RW genotype and also display red flowers. None of the offspring will have the WW genotype, so there won't be any white flowers.

Hence, the expected phenotypes of the offspring of this cross are that half will have red flowers and half will have white flowers. Thus, the correct option is c.

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Answer:

Answer is Option A

Hope it helps

A steroid hormone approaches its target cell, therefore the hormone will enter the nucleus and is what will happen first which is therefore denoted as option A.

This is referred to as a chemical messenger which is released directly into the bloodstream and is responsible for the control of certain metabolic reactions occurring in the cell and  an example is steroid hormone such as androgens.

In a situation whereby a steroid hormone approaches its target cell, it first passes through the plasma membrane before it then becomes adhered to the receptors which are present in the nucleus or cytoplasm.

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I - Left Atrium, II - Left Ventricle, III - Right Ventricle, IV - Right Atrium, V - Aorta, VI - Pulmonary Artery, VII - Pulmonary Vein, VIII - Vena Cava.

The labeled parts in the diagram represent structures involved in mammalian blood circulation, specifically for humans. I is the Left Atrium, where oxygenated blood enters the heart. II is the Left Ventricle, which pumps oxygenated blood to the body.

III is the Right Ventricle, which pumps deoxygenated blood to the lungs. IV is the Right Atrium, where deoxygenated blood returns to the heart. V is the Aorta, the main artery supplying oxygenated blood to the body. VI is the Pulmonary Artery, transporting deoxygenated blood to the lungs.

VII is the Pulmonary Vein, carrying oxygenated blood back to the heart. VIII is the Vena Cava, returning deoxygenated blood from the body to the heart.

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Answer:

1)  Children were found in the proportions shown because the two genes are linked, they do not assort independently from each other

2) The chromosomes draw is in the attached file

Explanation:

Due to technical problems, you will also find the explanation for the first question in the attached files (PDF).

The main purpose of a multiple cloning site is: (3)To provide a location where DNA can be inserted into a plasmid.

A multiple cloning site is a sequence in the DNA of an organism that consists the cut palindromic site for many restriction enzymes. This region is highly exploited in laboratories to insert DNA into the vector for its transmission into the host.

Plasmid is the closed circular double-stranded DNA molecule. It is particularly present in bacterial cells. It is an autonomously replicating genetic material i.e., it can replicate on its own. Plasmids are largely used as vectors for gene transfer.

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Answer:

c

Explanation:

its c i took the test

The living things are arranged in biological levels, organizing the structure of biological organisms and its agroupments. Those levels are|: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem and biosphere.

The most basal biological level are the organelles, which are membrane-bound compartments inside the cells responsible for playing different roles in the cell's global function. One example of organelle is the mitochondria. Those organelles are part of the cell, which is another biological level.

The cell is the basic functional and structural unit of life. This means that all living beings are composed of cells, and the cells are the most basal unit that keeps the organisms alive and functioning. A cell is composed of a cytoplasm, in which the organelles are distributed, within a membrane.

The cells can be organized in agroupments of similar cells sharing an extracellular matrix and having a group functioning. This agroupment of cells with the same function is called a tissue. A collective of tissues, on the other hand, composes the next biological level, an organ.

An organ structurally forms a functional unit, all of the tissues working together, performing a particular function. The lungs, the stomach and the heart are examples of organs. Our organs have complementary functions, in order to keep the entire organism functioning.

The organ systems are composed of a group of organs working together to perform different functions. The Digestive System, for example, is composed of the stomach, the liver, the pancreas, amongst other organs, and they all work together so we can digest the food.

The next biological level is the organism, which is an agroupment of molecules arranged in organelles, cells, tissues, organs and systems. The organism can function as a more or les stable whole, exhibiting the properties of life.

An agroupment of organisms from the same species living together at a particular place is called a population. And an interacting group of various species in a common location is a community. But we still have a major agroupment, which includes all living organisms and also the physical environment, and we call it an ecosystem. At last, we have the biosphere, the zone of the Earth where land, water, air and earth interct with each other, supporting life.

Those are the biological leves, from the most basal (organelle) to the most complex (biosphere).

Vacuole is the central organelle in the plant cells that keep the cell turgid.

Vacuole is a large organelle of plant cells that occupies 90% of the cell's area. It is a characteristic organelle of plant cells. Apart from maintaining the cell's turgidity, the vacuole also acts as the storage organ as it transports food or sometimes the waste particles.

Plant cells are the type of cells that are differentiated from animal cells due to the presence of cell wall. These cells also contain chloroplast that helps plants to synthesize their own food. The connection between two plant cells is maintained by the plasmodesmata.

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Answer:

It means that a mineral will always contain certain elements in exact proportions. It means that it has a definite volume and shape. So, its particles ar tightly packed together and can't move easily.

Answer:

Leaves are modified into the thorn in cactus plant as it helps to reduce the transpiration process in plant body that helps to reduce the water loss from body of plant.

Answer:

The correct answer is : 0.264

Explanation:

The total population of the Soay sheep is : 368 dark sheep + 132 light sheep

          = 500 sheep.

Total dark coat sheep ( dark allele represented by D as it is dominant) = 368

Total light coat sheep ( light allele represented by d as it is recessive) = 132

As we know crossing is took place in between true breeding:

           DD × dd

F1,           Dd        ( all are dark coat)

So, the genotype frequency of the homozygous recessive allele is

       = 132/500               (by Hardy - Weinberg equation)

       = 0.264

Thus, the correct answer is 0.264.