the blood veins is
a.leaving the lungs.
b.moving in a single file
c.traveling to the heart.
A P E X
What is produced in a lymph node?
A. Red blood cells
B. Antigens
C. White blood cells
D. Lysozymes
Answer:
c
Explanation:
white blood cells.
God bless
Which space station was the first to involve several countries working together?
Answer:
the Soviet space station Mir
Answer question 6-9 please
20 points
Why not try and do some yourself?
Hello!
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Your answers here would be;
6: Rain Forests.
7: They moderate area temperatures.
8: The amount of solar energy the Latitude receives
9: Hybrid Cars.
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Hope i helped.
Which causes a drop in female hormone levels?
the onset of the menstrual flow
if an egg is released from the ovary
if the uterine wall thickens
if the egg is not fertilized
Answer
If the uterine wall thickens
Explanation:
A,B,D, these are all things that happen on a daily to women and most of them still have good horomone levels
When the egg is not fertilized that causes a drop in female hormone levels. So, the correct option is D.
What are Female hormones?Sexuality and fertility are influenced by the three primary reproductive hormones are estrogen, testosterone, and progesterone. Pregnancy, puberty, menstruation, menopause, sex drive, sperm production, and other processes are all controlled by them. These hormones are made in the testes in males and ovaries in females.
The ovaries release the main female sex hormones. The ovary releases female gametes or eggs during ovulation. Following the discharge of the eggs, the ovary forms a corpus luteum, which secretes progesterone and oestrogen to prepare the uterine lining for a prospective pregnancy. The level of female hormones decreases when the egg is not fertilized.
Therefore, the correct option is D.
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In Mermaids green fins are dominant over purple fins. in fact purple fins are very rare in the mermaid world. Muriel the mermaid has purple fins, and her family has been true-bred for purple fins for generations. Muriel falls in love with jack the merman. He has green fins. Muriel's family does not want Muriel to marry him because it will break the family tradition of purple fins. However after much thought, they decide that they will allow Muriel to marry jack if a geneticist can prove that there is a chance of Muriel and Jack having a baby mermaid with purple fins.
A) What is Muriel's genotype?
B) What type of information do you need from jack to determine his genotype?
C) What does Jack genotype need to be in order for there to be any purple finned babies (prove with punnet square)
Answer:
If the gene for green fins is "G" and the gene for purple fins is "g" :
A) Muriel's genotype is gg
B) His parent's fin colors
C) Gg
Explanation:
In this figure, which amino acid is specified by the mRNA code CCC?*
1. Ala
2. Pro
3. Gly
4. Lys
Answer:2
Explanation:
The shortest day of the year in the northern hemisphere is
December 22
March 21
June 21
September 22
HURRY QUICK
Answer:
December 22nd
Explanation:
Please help!!
If two transparent materials cause light to bend at different angles, the two transparent materials MOST likely have different __________.
A)focal points
B)densities
C)transparencies
D)wavelengths
Answer:
Transparency is the ability to "see through"
Explanation:
The answer is densities,B. depending on the density of an object, which means less transparent, if the object has more density, means it is more solid and less transparent...
Part
These beetles have a uniform distribution. In year 1, how many beetles are there per hectare? How many beetles per
hectare were there in the year the beetles reached carrying capacity? Round up or down to the nearest whole number, if
necessary.
Answer -
In year 1, the population was 11,500 spread over 115 hectares
In year 1, there were 100 beetles per hectare (11,500 beetles / 115 hectares).
In year 1, the beetle population exhibited a uniform distribution, meaning it was evenly spread across the area. The total population of 11,500 beetles was distributed over 115 hectares. To calculate the density, the total number of beetles was divided by the total hectare area, resulting in an average of 100 beetles per hectare. This indicates that, on average, there were 100 beetles within each hectare of the habitat in the first year.
As the population reached its carrying capacity, the density per hectare became more stable, providing insights into the ecological dynamics of the beetle population and its relationship with the surrounding environment. It's essential to consider ecological factors that may impact population distribution and density, contributing to a comprehensive understanding of the ecosystem.
Which substances are contained in saliva and tears to break down pathogens?
a
enzymes
b
oils
c
acids
d
sweat
Answer:
its A i got it right on quiz
Explanation:
Enzymes are contained in saliva and tears to break down pathogens. So, the correct option is A.
What is Lysozyme?Lysozyme is defined as an enzyme that is found in secretions that are tears and saliva of animals that are also present in our nasal mucus. Lysozyme serves as the first line of defense because it is able to break down chemical bonds in the outer cell wall of bacteria that attempt to enter our bodies.
Lysozyme is a type of protein found in animals, plants, bacteria and viruses that can be found. Neutrophils, macrophages and granules in serum, saliva, milk, honey and hen's egg white. Lysozyme belongs to the class of glycoside hydrolases which is an alkaline enzyme that hydrolyzes mucopolysaccharides in pathogenic bacteria.
Thus, Enzymes are contained in saliva and tears to break down pathogens. So, the correct option is A.
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two unknown Pea plants are crossed. 75% for 3/4 of the plants have axial flowers and 25% or 1/4 have terminal flowers. what are the genotypes of the parents ?
Answer:
Aa x Aa
Explanation:
Using axial is dominant (A) and terminal is recessive (a). For a recessive trait to show up at all, both parents must have at least one recessive character.
You can solve this using a punnett square
Aa x Aa -> (1) AA (2) Aa (1) aa
This gives a 3:1 ratio or 75%/25% ratio of axial to terminal flowers
Explain why the father determines the sex of the child:
Answer:
the father's the one because he's the only one with the y chromosome hence if the sperm containing the y chromosome fertilises the ovum then the kid is a boy and if its the one with the x chromosome then its a girl
Answer:
In the XY sex-determination system, the female-provided ovum contributes an X chromosome and the male-provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively. Hormone levels in the male parent affect the sex ratio of sperm in humans.
Explanation:
Hope this helps!!!!
Forever friend and helper,
Cammie:)
If you were explaining equilibrium to a classmate, which of the following statements might you make? (1.0 points)
A)When there is an equilibrium change, signals to maintain balance are sent from the medulla oblongata to the vestibulocochlear nerves.
B)When there is an equilibrium change, signals to maintain balance are sent to the cerebellum and thalamus.
C)Commands to maintain equilibrium are sent to the cerebral cortex, whereas information about equilibrium is sent directly out to the body.
D)Commands to maintain equilibrium are sent directly out to the body, whereas information about equilibrium is sent to the cerebral cortex for conscious perception.
Answer:
D
Explanation:
Your brain sends out the commands to the effectors in the body, but the sensors around the body send information to be processed in the brain about equilibrium.
Chloroplasts are oval disks containing green chlorophyll and usually arranged near the outside of a plant cell. What cellular function do they support?
a.Photosynthesis
b.Locomotion
c.Reproduction
d.Fat storage
Chloroplasts are oval disks containing green chlorophyll and are usually arranged near the outside of a plant cell. The cellular function do they support is a.Photosynthesis.
What is the chemical equation of photosynthesis?In the process of photosynthesis, the chemical reaction involves water and carbon dioxide whereby the light is present.
6H2O + 6Co2⇄ 6O2 + C6H12O6.
Thus, option "A" is correct.
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How might bird species A and B come into contact with DDT, a pesticide used by farmers?
Answer:
By birds that ate or were in contact with plants that were sprayed with DDT .
Explanation:
Dichlorodiphenyltrichloroethane (DDT) is a versatile pesticide used in agriculture to combat insect plagues. DDT has been prohibited in many contries because this insecticide might cause health problems in humans, especially during fetal development.
1. What does the water cycle describe?
Answer:
The water cycle describes the continuous movement of water as it makes its way from the ocean, to the atmosphere and back down to earth again.
Explanation:
Which best compares habitat and niche? Niche is a place in which organisms live, and habitat is the way in which an organism fits into its habitat. Habitat is a place in which organisms live, and niche is the way in which an organism fits into its habitat. Habitat is a group of organisms that live in an area, and niche is a specific species that lives in that area. Niche is a group of organisms that live in an area, and habitat is a specific species that lives in that area.
Answer:
Habitat is a place in which organisms live, and niche is the way in which an organism fits into its habitat
Habitat is a place in which organisms live, and niche is the way in which an organism fits into its habitat, hence option B is correct.
What is the habitat?An ecosystem's habitat and niche are critical components. They aid in explaining how an organism interacts with its surroundings, including biotic and abiotic elements.
Ecological interactions are the subject of research. There is a slight difference between the words “habitat” and “niche.”
Only after an ecology develops and niches are incorporated into it does a habitat become active (realized habitat). This process, known as habitat differentiation, is intricately linked to the existence of a healthy ecosystem.
Therefore, they inhabit different habitats, it is feasible for two animals to share the same niche (same function) within an ecosystem.
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WILL GIVE BRAINLIEST
Match each type of lipid to its characteristics. Drag the items on the left to the correct location on the right. (photo attached)
phospholipid -> two fatty acids, a glycerol molecule, and a phosphate group
triglyceride -> three fatty acids and one glycerol molecule
steroid -> four fused rings
triglyceride -> forms saturated or unsaturated fats
phospholipid -> provides fluidity to the cell membrane
steroid -> present only in animal cells
I got you <33 and I see it perfectly ! :)
Both triglycerides and phospholipids contain a gylcerol backbone. Steriods contain fused rings and are only found in animals.
Phospholipids and triglycerides share a common structural feature in common and that is the presence of a glycerol backbone in the molecule. Glycerol is a three carbon compound. In a phospholipid, there are two fatty acids and a phosphate group attached to the carbon atoms. In a triglyceride, there are three fatty acids that attach to each of the carbon atoms.
Steriods are composed of fused rings and are found in animals. They play very important roles in the body. An example of a steroid is cholesterol.
Matching the items on the left and right of the image;
phospholipid - two fatty acids, a glycerol molecule, and a phosphate group/provides fluidity to the cell membrane
triglyceride - three fatty acids and one glycerol molecule/forms saturated or unsaturated fats
steroid- four fused rings/ present only in animal cells
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Is the gene that cause hemophilia recessive or dominant? Use the image to explain your reasoning
Answer:
Sample answer:
It’s recessive. The mother who is a carrier is heterozygous, but she does not have the disease. The only offspring who have the disease are the boys who inherited one mutated gene.
Hemophilia is a recessive genetic disorder. It is only observed when present in homozygous condition (XhXh).
What is Hemophilia?Hemophilia is usually an inherited bleeding disorder in which the blood does not clot properly in an individual. This condition can lead to spontaneous bleeding in the individual as well as continuous bleeding following injuries or surgery. Blood contains many proteins which are called clotting factors that can help to stop bleeding.
Hemophilia is a recessive disorder. In this condition, the mother who is a carrier is heterozygous (XhX), but she does not have the disease. The only offspring who have the disease are the males who have inherited has one mutated gene.
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List and describe the evidence for the
plate tectonics theory.
Answer:
The shapes of continents fit together like a puzzle. The matching coastlines show where the continents broke apart. Identical rocks that formed over 200 million years ago have been found on different continents.
Explanation:
If I'm right help me out leave a five stars and like
What are diseases such as a strep throat and Athlete’s foot caused by?
miasma
decaying matter
microorganisms
temperature changes
Answer:
c. Microorganisms
Explanation:
Microorganism are the microscopic organisms present in environment such as bacteria, fungi and virus.
Strep throat is a infection of throat caused by a "Group A Streptococcus bacterium". The diseases of strep throat causes large red patches on the skin. some of the symptoms of strep throat include fevers, chills and blisters.
Athlete's foot is a feet infection caused by different fungi such as trichophyton, microsporum and epidermophyton. Symptoms of Athlete's foot include scaling, itching, redness and cracking.
Hence, the correct option is c.
explain using an example how a new species of organisms can evolve?
Answer:
New species form by speciation, in which an ancestral population splits into two or more genetically distinct descendant populations. Speciation involves reproductive isolation of groups within the original population and accumulation of genetic differences between the two groups
Hope it helps :)
The fox and cooper’s hawk would be ___________________ consumers and considered ______________ predators in this food web.
Answer:
The correct answers are "tertiary; top".
Explanation:
Tertiary consumers are animals that eat other animals that are carnivorous as well. This is the case of the fox and the cooper's hawk. Foxes are omnivore animals that eat other animals like mice, which eat insects that eat plants sequentially. Cooper's hawks are also tertiary consumers, since they eat animals that are secondary consumers like frogs. This characteristic of both the fox and copper's hawk make them top predators in food webs.
Final answer:
The fox and cooper's hawk are higher-level consumers and efficient predators within a food web, maintaining ecological balance by controlling prey populations. They and their prey have adaptations for survival through natural selection. If removed from the food web, it could lead to shifts in the roles of other species.
Explanation:
The fox and cooper's hawk would be higher-level consumers and considered efficient predators in a food web. As higher-level consumers, they prey on various organisms below them in the food chain, including primary consumers like caterpillars and other smaller animals. Their role as predators is crucial for maintaining the balance in an ecosystem as they help control the population of these primary consumers.
Predation involves adaptations that both predators and prey develop through natural selection, such as camouflage. This is seen in both terrestrial and aquatic ecosystems, as demonstrated by the varied predatory relationships within food webs. The adaptations ensure the survival of these species within their respective habitats, allowing them to effectively hunt or evade predators.
In the case of food webs, secondary and tertiary consumers play a role in keeping the system balanced. If one species were to be removed, others in the web could potentially shift roles, although this is an oversimplification as entire ecosystems can be affected by the loss of a single predator or prey species.
A. heterozygous
B. alleles
C. homozygous dominant
D. homozygous recessive
I’m pretty sure the answer is homozygous recessive!
What are the Different stages of stars life cycle
Answer:
The stages of most stars life in order are: A Protostar, Main Sequence, Red Giant B Protostar, Main Sequence, Red Dwarf C Main Sequence, Red Dwarf, Protostar D Red Giant, Main Sequence, Protostar E Nebula, Protostar, Red Dwarf. 2 What does a protostar have to do to become a star? A Nuclear fusion in its core. B Nuclear fission in its core.
A retreating glacier forms an are of rocky material. When primary
succession occurs, which organisms will help create the soil by breaking
down bare rock?*
A Insects
B Lichens
C Grasses
D Deciduous trees
Answer:
Explanation:
As ecosystem moves through the stage of succession the population of organisms in them change which of the following describes the stage of succession likely to have the most biodiversity
Moin took some soil and measured the concentration of nitrogenous compounds in it. He distributed the soil equally in two pots- P and Q which he placed in sunlight.
He planted 10 sunflower seeds in Pot P and allowed them to grow. He did not grow anything in the Pot Q.
After one month, he tested the concentration of nitrogenous compounds in both the pots.
What do you think was his observation?
Answer: The nitrogenous compounds in the Pot P will be depleted and the Nitrogenous compound in the Pot Q will have same amount of it.
Explanation:
Moin took soil and put into two pots. In one of the pot which he labelled P,planted sunflower seeds.
Whereas, the pot Q he left as it is with no plantation in it. The observation after few days will be that the level of nitrogen in the pot P will be less compared to the pot Q.
Nitrogen is one of the important micro nutrient which serves many important functions in the plant body. It is the main component of chlorophyll and is important in enzyme synthesis.
Hence, pot P will have its nitrogen consumed by the plant and pot Q will have nitrogen in its soil.
Which of the following correctly describes what a mutation is?
A. A change in in the DNA code of an organism
B. A change to a gene of an organism
C.A change to the nucleotide sequence
D.All of the above
The answer is D, all of the above.
The Milky Way a section of the universe smaller in size than our solar system, true or false
Answer:
The answer is false, because our solar system exists inside the Milky Way.
Explanation: