acquired signs

Signs could be inherited or acquired. Which of the following is acquired sign?

Blood type, eye color and number of vertebrae are inherited signs. Scars on the body acquired during life.

The similarity

The similarity of life of cyanobacteria and flowering plants is manifested in the ability to

Seeds and double fertilization are signs of flowering plants. The similarity of cyanobacteria and flowering plants is the autotrophic way of eating.

Fungal cells

Fungal cells is different from a plant cell with the absence of

Plastids are the feature of plants.

Fungal cells 2

Fungal cells differ from animal cells by the presence of

Fungal cells have a chitin cell wall.

Fungal cells 3

Fungal cells, unlike bacterial cells have

Fungi are eukaryotes, that are cells with decorated nucleus.

Statement

Choose the correct statement.

The correct statement is the second one: a single-celled organism performs all the functions of a cell.
1) - not true for bacteria and single-celled ciliates, but they are capable of conjugation;
3) - not true, a multicellular organism has a differentiation for the organs and tissues;
4) - in coelenterates there is a radial symmetry.

Statement 2

Choose the correct statement.

Correct statement is the 4th: in a multicellular plant a volume of the body is not potentially limited.
1) - not true - haploid generation is called gametophyte, because it is capable of sexual reproduction and form gametes;
2) - chlamydomonas (single-celled plants) can actively move around;
3) - not true, in a multicellular organism there is a differentiation into organs and tissues.

meristem

The representatives of which kingdom of nature in the presense in the  structure of the meristem?

Only plants have meristem. Bacteria and fungi have no tissue.

Prokaryotes 2

Representatives of bacteria kingdom include to prokaryotes, because their cells have no

Prokaryotes are unicellular organisms which do not have (in contrast to eukaryotic) cell nucleus bounded by a membrane, no chromosomal apparatus. The thread of DNA is usually minimized in the annular center of the cell (nucleoid).

Difference 4

What is the difference between the organisms of plants and animals?

Animals have a heterotrophic way of nutrition; plants are autotrophes. So, they are different in a way of eating.

Difference 5

Plants differ from fungal cell with the presence of

1, 3, and 4 are signs of plants and fungi. 2 - only in plants, there is no in fungi.

organ system

What organ system protects the body from external influences?

What organ system protects the body from external influences?

Coating System is a complex of species of epithelial tissue, muscle cells, connective tissue and nervous, concentrated on the surface of the body. It protects the body from drying out, fluctuations in temperature, damages, penetration into the body the toxic substances and pathogens.
 

Nerve impulses

Nerve impulses are sent directly to the gland of

Nerve impulses are sent directly to the gland of

Motor neuron axons are coming from the spinal cord to the muscles and glands.

organ system 3

What organ system performs the release the end products of metabolism, dissolved in water from cell and tissue?

What organ system performs the release the end products of metabolism, dissolved in water from cell and tissue?

The circulatory system is a group of bodies taking part in the circulation of blood in the body. One of the functions of blood is to wash a number of special organs such as the liver and kidneys, with the neutralization or output of end products of metabolism.

organ system 4

What organ system regulates the functions of the body through hormones?

What organ system regulates the functions of the body through hormones?

Endocrine system is the system of regulation of the internal organs through hormones secreted by endocrine cells directly into the blood, or diffusing through the intercellular space in the neighboring cells.
 

nervous system

Which of the following lies in the basis of the work of the human nervous system?

Which of the following lies in the basis of the work of the human nervous system?

Reflex is a stereotyped reaction of a living organism to a stimulus that passes involving the nervous system.
 

intracellular substance

What tissue is characterized by well-developed intercellular substance?

What tissue is characterized by well-developed intercellular substance?

The peculiar structure of the connective tissue is a well developed intercellular structures (fibers and ground substances).
 

tissue 2

What tissue is caracterised by the presence of intercellular substance in liquid form?

What tissue is caracterised by the presence of intercellular substance in liquid form?

Blood is the internal environment of the body, formed by liquid connective tissue.

tissue 3

Which tissue formes the tendon of the locomotor apparatus of human?

Which tissue formes the tendon of the locomotor apparatus of human?

Fascia, ligaments, tendons, bones, cartilage, joints, joint capsule, synovial fluid, blood, lymph, blood vessels, capillaries, sclera, iris, microglia, and so on are all the examples of connective tissue.

epithelium

Multilayered epithelial tissue include

Multilayered epithelial tissue includes

Multilayered epithelium forms the outer layer of skin (epidermis); single layer glandular epithelium forms glands of the digestive tract; single-layer cylindrical epithelium lining most of the intestinal tract; layered cylindrical epithelium is a cavity of the upper respiratory tract.
 

epithelium 2

Which of the following have walls composed of single layer of epithelium?

Which of the following have walls composed of single layer of epithelium?

The capillaries consist of a single layer of epithelial tissue; walls of veins and arteries are composed of three layers.

lymphocytes

An integral part of what tissue are lymphocytes?

An integral part of what tissue are lymphocytes?

Lymphocytes are cells, that are a type of white blood cells agranulocytes, group of white blood cells. Blood cells, in this case are in free circulation in the blood. A blood is a form of connective tissue.

gland

Which of these glands is a part of the human digestive system?

Which of these glands is a part of the human digestive system?

The digestive system consists of the digestive tube - the digestive tract (oral cavity, pharynx, esophagus, stomach, small and large intestine) and digestive glands located outside, but related by channels (large salivary glands, liver, pancreas). Adrenal glands, pituitary gland, thyroid gland are endocrine glands.

nervous system 2

The somatic nervous system controls the activities of

The somatic nervous system controls the activities of

The somatic nervous system is a part of the peripheral nervous system. It consists of sensory and motor nerve fibers that innervate the musculoskeletal system and the skin.
 

organ system 6

Testicle is the part of what human organ system?

Testicle is the part of what human organ system?

Male reproductive system consists of the external and internal genital organs. The internal male genital organs are represented by the testicles and epididymis, the vas deferens to the seminal vesicles, prostate, bulbourethral (Cowper's) glands.

fertilization

What is the result of fertilization?

What is the result of fertilization?

Fertilization is a merging of male and female sex cells, gametes, to form a zygote, combining the genetic information of parents. Fertilization is the basis of sexual reproduction and transmits hereditary characteristics from parents to offspring.

regulation

What regulation is carried out by means of chemically active substances spread by the blood to all cells of the body?

What regulation is carried out by means of chemically active substances spread by the blood to all cells of the body?

Humoral regulation is one of the earliest evolutionary mechanisms of regulation of vital processes in the body. It is carried by body fluids (blood, lymph, interstitial fluid, mouth) with the hormones secreted by the cells, organs, tissues.

organ

Which of the following is an organ?

Which of the following is an organ?

Organ is an isolated collection of various types of cells and tissues that performs a specific function in a living organism. The organ is the spinal cord - the organ of central nervous system of vertebrate located in the spinal canal.

organ 2

Which of the given organs referred to the endocrine system?

Which of the given organs referred to the endocrine system?

Endocrine system is the system of regulation of the internal organs through hormones secreted by endocrine cells directly into the blood, or diffusing through the intercellular space in the neighboring cells.
On the upper poles of both kidneys are small pyramid-shaped gland - the adrenal glands. The adrenal cortex produces mineralocorticoid and glucocorticoid; medulla produces adrenaline.

egg

What signs of an egg distinguish it from the sperm?

What signs of an egg distinguish it from the sperm?

The egg is a female gamete, it is large, motionless.

pancreas gland

The pancreas glands referred to as a mixed secretion, because it generates insulin and

The pancreas glands referred to as a mixed secretion, because it generates insulin and

The glands of mixed secretions provide internal and external secretion. Pancreas secretes  insulin and glucagon into the blood, and pancreatic  juice - not into the blood ( into 12-duodenum).

tissue 5

The main tissue of a human stomach wall is

The main tissue of a human stomach wall is

The stomach is a bag-shaped extension of the digestive tube, the stomach wall is made up of three layers of smooth muscle fibers in different directions to ensure the motor function of the stomach (the mixing of food, pushing food into the intestine or esophagus vomiting).

liver

Which organ system does include liver?

Which organ system does include liver?

Liver refers to the digestive system.
The digestive system consists of the digestive tube, the digestive tract (oral cavity, pharynx, esophagus, stomach, small and large intestine) and digestive glands located outside, but related by channels (large salivary glands, liver, pancreas).

red blood cells

Red blood cells are part of what tissue

Red blood cells are part of what tissue

Red blood cells are forming elements (red nuclear-free cells) of blood. A blood and tissue fluid is a form of connective tissue.
 

thymus

In what processes of the human body does thymus involve?

In what processes of the human body does thymus involve?

Thymus is an endocrine gland, which plays a crucial role in the formation of immunity. It stimulates the development of T ("thymus") lymphocytes.

hormones 3

The excess or deficiency of hormones in the blood is perceived by

The excess or deficiency of hormones in the blood is perceived by

The excess or deficiency of hormones in the blood is perceived by the hypothalamus.

hormones 4

Which of the hormones is secreted by the adrenal glands?

Which of the hormones is secreted by the adrenal glands?

Adrenaline is a hormon of adrenal glands;
hormone insulin is secreted by pancreatic Langerhans islets;
thyrotropin is a pituitary hormone; immunoglobulins are a special class of glycoproteins that are present on the surface of B-lymphocytes in the form of membrane-bound receptors in the serum and tissue fluids as soluble molecules.

function 5

Which of the following functions is regulated by the thymus gland?

Which of the following functions is regulated by the thymus gland?

Thymus is a endocrine gland, which plays a crucial role in the formation of immunity. It stimulates T ( "thymus")-cells in its own tissue and in the lymphoid tissue of other body parts.

function 6

Which of the following functions is regulated by the thyroid gland?

Which of the following functions is regulated by the thyroid gland?

The thyroid gland produces many hormones, but the particularly important are thyroxine and triiodothyronine. These two hormones are in full control of metabolism, heart and vascular system, from their level in the blood depends even mental health. No less important is the calcitonin that regulates the growth and development of bone tissue.

spinal cord 3

What formes the gray matter of the spinal cord?

What formes the gray matter of the spinal cord?

The gray matter of the spinal cord is formed by bodies of neurons and their dendrites.

organ 6

What is the organ that brings together the activities of the nervous and endocrine systems?

What is the organ that brings together the activities of the nervous and endocrine systems?

In vertebrates, the hypothalamus represents the main nerve center responsible for regulating the body's internal environment. The hypothalamus controls all basic homeostatic (constancy of internal environment) processes.

pupils 3

What does the pupil of the eye?

What does the pupil of the eye?

Answer 1 - retinal function;

answer 2 - a function of the pupil;

answer 3 - function of the lens;

answer 4 - the function of the optic nerve.

receptors 2

Olfactory receptors are located in

Olfactory receptors are located in

In vertebrates, the olfactory organ is the olfactory epithelium located in the nasal cavity at the top turbinate.

eye

Part of the eyes that could change its refractive power, depending on the degree of remoteness of the subject is

Part of the eyes that could change its refractive power, depending on the degree of remoteness of the subject is

The lens is the transparent organ located inside the eyeball in front of the pupil. The lens is an important part of the light-refracting apparatus of the eye, has the property of accommodation.

pupils 4

The pupil is located in the middle

The pupil is located in the middle

The pupil is the iris aperture in the vertebrate eye (usually round or slit) through which light rays enter the eye.

pigment

Pigment that determines the color of the front of the choroid of human eyes, is located in

Pigment that determines the color of the front of the choroid of human eyes, is located in

Eye color is depended on the iris pigment, called "melanin". The amount of melanin determines the color of the eyes.

middle ear 2

What is located in the middle ear?

What is located in the middle ear?

The middle ear is a part of the mammalian auditory system. There are three ossicles: the hammer, anvil and stirrup - they transmit sound waves from the outer ear to the inner, while strengthening them.

vision

What is responsible for vision in twilight?

What is responsible for vision in twilight?

Sticks are responsible for light vision; cones - color perception.

muscle cells

Which of these proteins can not be detected within the muscle cells?

Which of these proteins can not be detected within the muscle cells?

Unable to locate inside the muscular cell: hemoglobin (2) is located in red blood cells, fibrinogen (3) - a protein in blood plasma, trypsin (6) - gastric juice protein, other proteins present in muscle cells.
1, 4, 5 present inside the muscular cell
 

membrane organelles

Which of the following organelles are membrane organelles?

Which of the following organelles are membrane organelles?

Membrane organelles (have a membrane): lysosomes, vacuoles, leucoplasts (2 membrane), Ribosomes, centrioles, microtubules are composed of proteins and have no membrane.

matrix synthesis reactions

In which of the following organelles cell matrix synthesis reactions occur?

In which of the following organelles cell matrix synthesis reactions occur?

Matrix synthesis reactions are twomembrane organelles, i. e. for they contain their own DNA and ribosomes - mitochondria and chloroplasts.
As well as within the ribosomes - the translation process is on the matrix principle.

eukaryotes

Eukaryotes include

Eukaryotes include

Eukaryotes are organisms that have the drawn up nucleus: common amoeba (protozoa), yeast (fungus), malaria parasite (Plasmodium - Basic). Prokaryotes are bacteria: Vibrio cholerae and E. coli. HIV - non-cellular life form.

connective tissue

Select features of connective tissue.

Select features of connective tissue.

245 - signs of connective tissue;
1 - nervous; 3 - epithelial; 6 - muscle

protein

Select features of the structure of protein molecules.

Select features of the structure of protein molecules.

2, 3, 6 - features of the structure of protein molecules
1, 5 - the structural features of lipid molecules; 4 - carbohydrates.

features

Select the features that distinguish fungi from plants

Select the features that distinguish fungi from plants

Differences: 1 - the chemical composition of the cell wall: in fungi - chitin; plants - cellulose.
4 - way of eating: mushrooms - heterotrophic organisms, plants - autotrophs.
6 - fruiting body - the body's reproductive part of the fungus, which is formed of interwoven hyphae. The function of the fruiting body is the formation of a dispute arising as a result of the sexual process.
Items 2 3 5 - signs of similarity
 

function 3

Select three functions unique to the protein.

Select three functions unique to the protein.

Only proteins characteristic are catalyst, movement and transport functions.
Other features may have other organic and inorganic substances.

function 2

What are the functions in the cell molecules of carbohydrates and lipids?

What are the functions in the cell molecules of carbohydrates and lipids?

The functions of carbohydrates and lipids are
3) construction
4) energy
5) reserving

interphase

What processes do take place in the cell during interphase?

What processes do take place in the cell during interphase?

Interphase is a cell activity phase, where the replication of DNA and cell growth takes place.