The correct answer is: c. chordates are more closely related to echinoderms than to arthropods
The Closest nonchordate relatives to Chordates are Echinodermata. Hemichordates (such as acorn worms) and Echinodermata form the Ambulacraria which is the sister phylum of the Chordates.
Echinoderms and chordates are both deuterostomes, but the differences are that Echinoderm possess bilateral symmetry only as larvae, they have tube feet and their bodies are supported by calcite skeletons.
Answer:
Echinoderms and chordates are found on the same clade.
Explanation:
The results of human activity on the natural environment are called _[blank]_ effects.
anthropogenic
anthropometric
anthropomorphic
anthropological
Answer: anthropogenic
Explanation:
The effect of human activity on the environment is called as anthropogenic.
Anthropogenic impacts can be on the ecosystems, biodiversity, and on natural resources. The human activities such as forests fires, deforestation, pollution are anthropogenic activities.
Which of the following is a correct statement about the endocrine system?
The adrenal glands sit on top of the kidneys and release insulin, which regulates blood sugar.
The adrenal glands sit on top of the kidneys and release TSH, which affects heart rate.
The adrenal glands sit on top of the kidneys and release adrenaline, which affects heart rate.
The adrenal glands are in the neck and release TSH, which affects heart rate.
The adrenal glands are in the neck and release adrenaline, which affects heart rate.
The adrenal glands sit on top of the kidneys and release adrenaline, which affects heart rate.
Explanation;Adrenal glands are located at the top of each kidney. They produce hormones that help the body control blood sugar, burn protein and fat, react to stressors like a major illness or injury, and regulate blood pressure. The Adrenal glands are made up of two regions; the adrenal cortex and the adrenal medulla. The adrenal medulla produces hormones adrenaline also epinephrine and noradrenaline also norepinephrine. Hormone adrenaline rapidly responds to stress by increasing your heart rate and rushing blood to the muscles and brain.How are bones involved with body movement
The Musculoskeletal System Provides Form, Support, Stability, And Movement For The Body. It Is Made Up Of The Bones Of The Skeleton, Muscles, Cartilage, Tendons, Ligaments, Joints, And Other Connective Tissues And Organs. The Bones Are Moved By Muscle Contractions.
What is a universal way that predation benefits the predator?
Predation increases mate availability.
Predation helps in defense of space.
The predator gets the energy it needs to survive.
The predator keeps parasites from hurting the species.
The predator gets the energy it needs to survive.
Answer:Option C
Explanation: The predators are the animal (carnivores) that feed on the other smaller animals for their energy need. The animals they feed on provide energy for their survival.
The predators are generally carnivore animals that eat animals as their soul source of energy to perform the vital functions such as running, walking, eating and metabolism inside the body.
So, predation helps to gain energy from the prey for survival.
Upon arriving at a crime scene, your partner secures the area. You begin drawing what you see. This type of sketch are you likely creating?
First drawing
Rough sketch
Original scene
All of the above
Option b.
The type of sketch that you are likely creating upon arriving at a crime scene is a Rough sketch.
Explanation:A rough sketch is a preliminary drawing that provides an overview of the crime scene, including the location of evidence, the layout of the area, and any other relevant details. It is a quick and approximate representation of the scene and helps in documenting the initial observations.
In addition to the rough sketch, you may also create other types of sketches, such as detailed sketches, scaled sketches, or final sketches, depending on the specific requirements of the investigation.
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During pneumonia, the lungs become "waterlogged"; this means that within the alveoli there is an abnormal accumulation of ______.
interstitial fluid - hope this helps!!
During pneumonia, the lungs become "waterlogged," which means that within the alveoli there is an abnormal accumulation of fluid and the lungs become "waterlogged" due to this abnormal accumulation.
What is the significance of the pneumonia in the lungs?In pneumonia, the accumulation of fluid in the alveoli is referred to as "alveolar edema," and this can be caused by a variety of factors, including infection with bacteria or viruses, injury to the lungs, etc., and fluid has accumulated within the alveoli, making it difficult for gas exchange to occur, which causes respiratory distress.
Hence, during pneumonia, the lungs become "waterlogged," which means that within the alveoli there is an abnormal accumulation of fluid and the lungs become "waterlogged" due to this abnormal accumulation.
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When blood sugar is low A) the liver creates insulin. B) glycogen is broken down in the pituitary gland. C) the pancreas secretes glucagon to trigger the liver to release stored glucose. D) the pancreas secretes glucose to increase sugar levels and restore homeostasis. Eliminate
The answer is C. the pancreas secretes glucagon to trigger the liver to release stored glucose.
Answer:
C) the pancreas secretes glucagon to trigger the liver and release stored glucose
Explanation:
30 points!! Will give brainliest if all questions are answered
1.Identify the phenotypes for the offspring of a parent with the genotype IAi and a parent with the genotype IAIB.
A. type O
B. type A and type B
C. type A and type AB
D type A, type AB, and type B
--------------------------------------------------
2.Which of the following can help determine if a trait is an X-linked trait?
A. a Punnett square
B.a pedigree
C.a testcross
D a phenotype
-------------------------------------------------------
3.Why are males more likely than females to have an X-linked disorder?
A. Males have two X chromosomes, so there is a greater chance of inheriting a recessive allele.
B. Males are unable to inherit the dominant allele for sex-linked traits.
C. Males have only one X chromosome, so a recessive allele is always expressed.
D. Males always express the recessive allele, even when a dominant allele is present.
-----------------------------------------------------------------------------------------------------------------------------
4.Some people may be born with a trait for producing "wet" earwax. People who have this trait have inherited either one or two of the same allele. This means that the trait is __________.
A. phenotypic
B. recessive
C. segregated
D. dominant
----------------------------------------
5.When a chicken that is true-breeding for black feathers is crossed with a chicken that is true-breeding for white feathers, the resulting offspring have grey feathers. This is an example of __________.
A.simple dominance
B. codominance
C complete dominance
D. incomplete dominance
Answer:
1. D
2. B
3. C
4. D
5. D
Explanation:
1. As shown in the punnet square below, the offprings can have the following genotypes; AA, AO. AB, and BO. The phenotypes of the offsprings will therefore have blood types; A , AB and B.
2. A pedigree is a tree that shows the family history of an individual. In the lineage, one can discover that a particular disorder is transmitted by a certain gender, which is most often the males. This is how sex-linked disorders are indentified.
3. The Y chromosoms have very few genes and does not match the X chromosome allele for allele. Therefore a recessive gene on the X chromosome in males is likely to be expressed than in females because females have an extra X crhomosome.
4. The dominant allele is always expressed over the recessive one even when both are present (heterozygous) in an individual. Only when both aleles are recesive will the recessive trait be expressed.
5. Incomplete dominance means none of the alleles have complete dominance over the other. This means that both are expressed and the expressed traits is an intermediate of the individual traits of the alleles.
Which of these functions is a responsibility of the muscular system?
A.
communication
B.
forming blood cells
C.
providing protection for the internal organs
D.
maintaining internal equilibrium
E.
storing essential minerals
Answer:
C. providing protection for the internal organs
Explanation:
The muscular system is made up of the muscles of the body. The main function the muscular system is that it aids movement. Muscles attached to bones and to one another helps the body during locomotion.
The muscular system also serve to protect the internal organs from damage. Some of the abdominal muscles where there are no bones protects the organs located in that part of the body.
Answer:
A. communication
Explanation:
Muscular system give us The muscles we need for speaking and writing are also skeletal muscles.
All the energy available to humans has its origins in ______
Answer:
The sun
Explanation:
This is because humans are heterotrophs, meaning they source their energy from the other organism by feeding on them. The food chains begin with primary producers that convert the energy from the sun into biomass through the process of photosynthesis. This energy rises up the food chain as the primary producers are fed on by consumers (humans included).
Name the phase of the cell cycle/Mitosis.
Thanks! ❤️
interphase,prophase,metaphase,anaphase,telophase
7. Process in which proteins lose their three dimensional structure from the application of extreme heat:
The answer to this question:
The process in which proteins lose their three-dimensional structure from the application of extreme heat is known as denaturation.
Denatured proteins lose their 3D structure not allowing them to function any longer.
Which of the following correctly describe veins?
Select all that apply.
major site of gas exchange with body tissues
depend on body movement to help move blood along
thin-walled
contain valves to prevent backflow
Answer:
depend on body movement to help move blood along
thin-walled
contain valves to prevent backflow
Explanation:
Veins return deoxygenated blood to the heart. They are thinly walled to allow blood plasma to flow back from tissues. This is after capillaries have brought in oxygenated and nourished blood into interstitial spaces from which exchanges with tissue occurs. The movement of this blood in the veins is assisted by musculoskeletal movements while the vein valves prevent backflow because the blood does not have as much pressure as in the arteries.
But, some of the trees may survive this process. What adaptation would give a tree a chance to survive this environmental change?
The most likely adaptation that would give a tree a chance to survive the transition from forest to desert is the type of root system that can grow deep into the ground. Option C is correct
Adapting to a changing environment involves multiple factors, and a combination of adaptations might increase a tree's chances of survival. However, the ability to access deeper water sources through a robust root system would be a key advantage in the scenario of transitioning from forest to desert.
A deep root system that can tap into deeper water reserves would be the most crucial adaptation for a tree to survive the drying out of its previous forest habitat. Such roots allow the tree to extract water even during prolonged periods of drought, increasing its chances of survival in the transitioning environment.
complete question:
In some areas of the world, deserts are expanding into places that were once forests. During this process, some of the forest trees will die off because of the change in climate.
But, some of the trees may survive this process. What adaptation would give a tree a chance to survive this environmental change?
A) The growth of limbs that are skinnier and longer.
B) The use of cones to protect and eventually spread seeds.
C) The type of root system that can grow deep into the ground.
D) Increased hardness of the wood in the tree that allows it to grow higher, and absorb more sunlight.
which of these causes rivers to flow toward the ocean?
A- erosion
B- latitude
C- gravity
D- tides
the answer is C; Gravity
c gravity is the answer
A skin cell in g2 of interphase has _____ as much dna as it had in g1.
A skin cell in G2 of interphase has twice as much DNA as it had in G1.
A skin cell is somatic cell that undergoes mitosis (cell division). Mitosis together with interphase is part of the cell cycle.
Interphase also known as a phase for the preparation for division consists of three phases:
• G1- cell becomes larger, copies organelles, and makes the building blocks necessary for the new cell
• S-cell copies its DNA in the nucleus (that is why G2 phase has twice as much DNA as it had in G1)
• G2 – cell continues to grow, makes proteins and organelles.
During the mitosis, the cell separates its DNA into two and divides its cytoplasm, forming two new daughter cells.
"The correct answer is that a skin cell in G2 of interphase has twice as much DNA as it had in G1.
The cell cycle is a series of events that cells go through as they grow and divide. Interphase is the phase of the cell cycle during which the cell grows, performs its normal functions, and prepares for cell division. Interphase is divided into three stages: G1 (first gap), S (synthesis), and G2 (second gap).
During the G1 stage, the cell grows in size and synthesizes various enzymes that are required for DNA replication. The amount of DNA in a cell during G1 is 2C, where C represents the amount of DNA in a haploid cell (the amount of DNA in one set of chromosomes).
In the S phase, DNA replication occurs, and the amount of DNA in the cell doubles. Each chromosome is replicated to form two identical sister chromatids, and the cell now contains 4C amount of DNA.
By the time the cell enters the G2 phase, it has completed DNA replication, and the amount of DNA remains at 4C. Therefore, a skin cell in G2 has twice as much DNA as it had in G1, because it has replicated its DNA during the S phase.
To summarize:
- In G1, the cell has 2C DNA.
- In S, the cell replicates its DNA, resulting in 4C DNA.
- In G2, the cell has completed DNA replication and still has 4C DNA.
Thus, a skin cell in G2 of interphase has twice the amount of DNA as it had in G1."
In which compartment of the cell do Krebs cycle and fatty acid oxidation take place?
these happen in the mitochondria
Definition of: Number and variety of living organisms; includes genetic, species, and ecological types.
Final answer:
Biodiversity refers to the variety of life, including genetic, species, and ecosystem diversity. It measures the variety of organisms and the genetic differences within them. Estimates suggest Earth could have around 8.7 million eukaryotic species, essential for the planet's resilience.
Explanation:
What Is Biodiversity?
Biodiversity refers to the variety of life that exists on Earth, encompassing the diversity of genes within species, the multitude of species, and the different ecosystems they form. The term can be measured on several organizational levels, including genetic diversity, species diversity, and ecosystem diversity. Genetic diversity pertains to the differences in DNA among individuals of the same species, ensuring that populations can adapt to changing conditions. Species diversity is the count of different species within an ecosystem or globally, and ecosystem diversity relates to the variety of habitats, biological communities, and ecological processes.
The formal biological definition of a species involves a group of organisms capable of interbreeding and producing fertile offspring. The system for classifying life on Earth that was introduced by Linnaeus in the 1700s involves various levels of taxa, from species up to kingdoms, and introduced the binomial nomenclature for naming species.
While it is difficult to ascertain the exact number of species on Earth, estimates suggest there are about 8.7 million eukaryotic species, with yet a greater number of prokaryotes. This vast array of life forms contributes to Earth's biodiversity, which is vital for the resilience and sustainability of our planet.
Which region of a tRNA molecule binds to amino acids?
a. Anticodon loop
b. Codon loop
c. The 3’ end
d. Variable loop
Meiosis starts with a single diploid cell and produces
A. two haploid cells
B. two diploid cells
C. four haploid cells.
D. four diploid cells
E. eight haploid cells
Meiosis starts with a single diploid cell and produces C) four haploid cells.
Explanation:Meiosis starts with a single diploid cell, which contains two sets of chromosomes, and produces C) four haploid cells, each containing one set of chromosomes.
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The correct answer is option (C). Meiosis starts with a single diploid cell and produces four haploid cells.
Meiosis is a type of cell division that reduces the chromosome number by half, resulting in four haploid cells.
This process is essential for sexual reproduction in eukaryotic organisms, as it produces gametes (sperm and egg cells) that contain a single set of chromosomes.
Here is the step-by-step explanation of meiosis:
1. Meiosis begins with a single diploid cell (2n), which contains two sets of chromosomes, one from each parent.
2. The cell undergoes DNA replication, so that each chromosome consists of two identical sister chromatids.
3. The cell then enters meiosis I, which is divided into several stages:
Prophase I: Homologous chromosomes pair up in a process called synapsis, and crossing over occurs, which allows for genetic diversity.Metaphase I: Homologous pairs align at the metaphase plate.Anaphase I: Homologous chromosomes are pulled apart and move to opposite poles of the cell.Telophase I and Cytokinesis: The cell divides into two non-identical haploid cells (n), each with one set of chromosomes.4. Meiosis II follows, which is similar to mitosis and involves the separation of sister chromatids:
Prophase II: Chromosomes condense again.Metaphase II: Chromosomes align at the metaphase plate.Anaphase II: Sister chromatids are pulled apart.Telophase II and Cytokinesis: The cell divides into two haploid cells, resulting in a total of four haploid cells from the original diploid cell.The presence of vascular tissue allowed plants to ________. the presence of vascular tissue allowed plants to ________. transport nutrients and water from below-ground tissues and use them to protect developing embryos transport nutrients and water from below-ground tissues to above-ground tissues and grow taller absorb nutrients from the soil and form a symbiosis with fungi release toxins into the soil that reduced competition with other plants by poisoning nearby plants
Transport nutrients and water from below-ground tissues to above-ground tissues and grow taller.
Explanation;Xylem and phloem form the vascular system of plants to transport water and other substances throughout the plant.Xylem transports and stores water and water-soluble nutrients in vascular plants. Phloem is responsible for transporting sugars, proteins, and other organic molecules in plants.Vascular plants are able to grow higher than other plants due to the rigidity of xylem cells, which support the plant.The presence of vascular tissue allowed plants to transport nutrients and water from below-ground tissues to above-ground tissues and grow taller. This adaptation enabled plants to grow larger and survive in diverse terrestrial environments by distributing essential resources throughout their bodies.
Vascular tissues, including xylem and phloem, form a plant's "plumbing system." They carry water and minerals from the soil to the leaves for photosynthesis and transport food produced by photosynthetic cells to other cells for growth and storage.
These adaptations enable plants to distribute essential resources throughout their bodies, resulting in the ability to grow larger and survive in varied, often harsh, terrestrial environments.
Initially, early land plants were limited in height and primarily competed for light close to the ground. The evolution of vascular tissues allowed them to develop taller structures, enabling better access to sunlight and promoting further growth and diversification.
Additionally, rigid molecules like lignin within the vascular tissues provided necessary structural support for these larger forms. Vascular tissues also provided structural support through molecules like lignin.
Would a population with a lot of genetic variation or little genetic variation be more likely to have individuals that can adapt to a changing environment?
a population with a LOT of genetic variation
What soil particle size has the greatest oxygen holding capacity? What soil particle size has the greatest water holding capacity? (Site 1)
Clay
Explanation;The soil particle size that has the greatest oxygen holding capacity is the clay. Clay is a fine-grained natural rock or soil material that combines one or more clay minerals with traces of metal oxides and organic matter.Answer:
The correct answer is clay.
Explanation:
Clay is the soil particle that exhibits the greatest oxygen holding capacity. It is a fine-grained soil or natural rock substance, which combines one or more minerals of clay with the traces of organic matter and metal oxides. The maximum concentration of water, which a given soil can hold is known as its field capacity, and the clay refers to the soil that exhibits the greatest water holding tendency.
plz help me
Where in the diagram does oxygen first enter the bloodstream?
A. 2
B. 4
C. 3
D. 5
The correct answer is choice D.
Oxygen first enters the bloodstream in the lung capillaries. The oxygen rich blood then returns to the heart.
Answer:
The correct answer is option D. 5 (lung capillaries).
Explanation:
The oxygen first enters in lung capillaries into the bloodstream from the alveoli by the simple diffusion. There is a network of tiny vessels known as capillaries from the alveoli sacs of lungs.
Lung capillaries transport the oxygenated blood to the heart and from there it pumps to the different parts of the body where blood carries the carbon dioxide in veins to the heart.
Thus, the correct answer is option D. 5. (lung capillaries).
Garrod hypothesized that "inborn errors of metabolism" such as alkaptonuria occur because 21) ______
a.many metabolic enzymes use dna as a cofactor, and affected individuals have mutations that prevent their enzymes from interacting efficiently with dna.
b.metabolic enzymes require vitamin cofactors, and affected individuals have significant nutritional deficiencies.
c.enzymes are made of dna, and affected individuals lack dna polymerase.
d.genes dictate the production of specific enzymes, and affected individuals have genetic defects that cause them to lack certain enzymes.
e.certain metabolic reactions are carried out by ribozymes, and affected individuals lack key splicing factors.
➷ The correct option would be D. genes dictate the production of specific enzymes, and affected individuals have genetic defects that cause them to lack certain enzymes.
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Which of the following does not correctly describe basic regulation of digestive activity?
a. Digestive effectors are smooth muscle and glands.
b. conscious neural control
c. pH, stretch, and osmolarity are some of the inputs that can initiate digestive responses.
d. Short reflexes act locally in the GI tract.
The correct answer is: b. conscious neural control
Neural control of digestive tract is unconscious achieved via the autonomic nervous system.
Local nervous system of the digestive system is called the enteric or intrinsic nervous system. The major components of this nervous system are two networks or plexuses of neurons:
• The myenteric plexus – controls digestive tract motility
• The submucous plexus - regulates gastrointestinal blood flow and controls epithelial cell function.
The diagram below shows the various stages of the cell cycle in onion root tip cells. MOST of the plant cells in this diagram are in which of the following stages of the cell cycle?
Question 2 options:
telophase
prophase
anaphase
interphase
I think the answer is b
Answer: Cell spends
Explanation:
Changes in arterial pH can modify respiration rate and rhythm even when carbon dioxide and oxygen levels are normal.
True
False
The answer is false!
Answer: The answer is TRUE
Explanation:
High air pressure means that the air is (blank A.) and (blank B.).
Choices for (blank A).
1.lighter
2.higher
3.nearer
4.colder
Choices for (blank B.)
1.further
2.warmer
3.lighter
4.heavier
Answer:
Colder and Heavier
Explanation:
Air pressure is the ratio of force exerted by air per unit area ,measure in pascal , Newton per square meter, torricelli, atmosphere etc
High air pressure means that the air is (blank A.) and (blank B.).
Choices for (blank A).
1.lighter
2.higher
3.nearer
4.colder
Choices for (blank B.)
1.further
2.warmer
3.lighter
4.heavier
BLank A colder
blank B is heavier.
This is so because high air pressure is a colder air from the Earth's atmosphere down to the surface of the earth. It is denser than air that's why it is heavy. Because it is denser than normal air. it moves from the bottom layer of the atmosphere.
High air pressure means that the air is denser and heavier. It's important in weather forecasting as high pressure areas often mean clearer weather, while low pressure could indicate unsettled conditions.
Explanation:High air pressure indicates that the air is denser and heavier. Atmospheric pressure refers to the force exerted by the weight of the air in the atmosphere. In regions of high pressure, the air is denser because more air molecules are compressed into a certain space, compared to regions of low pressure. This denseness makes the air heavier. This principle is crucial for understanding weather forecasting, as areas of high pressure often correspond with clearer, sunnier weather, whereas low pressure areas could indicate stormy or unsettled weather conditions.
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A forensic anthropologist is analyzing the skeletal remains of a human. She discovers a wide pelvic region, long narrow nasal aperture, narrow ribcage region. Based on the information, conclude the gender & race of the remains.
A) male, negroid
B) male, caucasian
C) female, negroid
D) female, caucasian
The correct answer is C
Female, negroid conclude the gender & race of the remains. Thus, the correct option is C.
What is Negroid race?Negroid is defined as an obsolete racial grouping of different people indigenous to south Africa of the area that extended from the southern Sahara desert in the west to the African Great Lakes in the southeast, but also to remote parts of South and Southeast Asia.
Negroid race women have a wide pelvic region, long narrow nasal aperture, narrow ribcage region.
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