It’s C, a microscope can see the blood cells since they are so small. A barometer is used to measure atmospheric pressure while a micrometer measures spaces and thicknesses.
Answer:
The answer is C. Microscope. Microscopes are known for allowing the naked eye to see things.
Explanation:
PLEASE HELP!! 20 Points!
Describe and provide examples of passive and active transport across a cell membrane. And How do active and passive transport benefit the cell?
Similarities:
Both involve ion movement. Both use ion channels to move ions across the cell membrane, in or out of the cell.
Differences:
Passive Transport (or Diffusion) moves ions from high concentration to low, using no metabolic energy. Active Transport moves ions from low concentration to high, using metabolic energy in the form of ATP. Active Transport uses an ion pump (or Sodium/Potassium pump) to move 3 sodium ions out of the cell and 2 potassium ions in to the cell through the energy of 1 ATP molecule.
In active transport particles move against a concentration gradient and therefore require energy which must be supplied by the cell. Carrier proteins that are found in the cell membrane of cells use energy to transport molecules or ions across the membrane, against the concentration gradient.
Passive transport is a naturally-occurring phenomenon and does not require the cell to exert any of its energy to accomplish the movement. In passive transport, substances move from an area of higher concentration to an area of lower concentration.
F a material has a hardness of 8, it cannot be scratched by a material with a hardness of 7. True false
At which map location does polaris appear the highest in the nighttime sky
The Polaris appears the highest in the nighttime sky in Miami , Florida.
Polaris or a pole star or polar star is the brightest star in the constellation of Ursa Minor. It is very close to the north celestial pole, making it the current northern pole star. It is closely aligned to the axis of rotation of an astronomical object.
25 POINTS
Which of these reproductive strategies are meant to ensure survival of the offspring?
A. A male sea horse carries its young in its sack
B. A peacock displays its brightly colored feathers.
C. Baby crocodiles travel on their mother’s back.
D. Bees visit the flowers of plants.
E. Birds eat fruits from trees.
The reproductive strategies meant to ensure the survival of the offspring are A, where a male seahorse carries its young in its pouch providing a protective environment, and C, where baby crocodiles travel on their mother's back for protection against predators.
Among the options provided for reproductive strategies meant to ensure the survival of the offspring, the correct choices relate to the direct care and protection of the young animals by their parents. Specifically, choices A and C involve direct protection and nurturing of offspring, which are key aspects of successful reproductive strategies in many animal species.
A. A male sea horse carries its young in its sack: This is an example of a unique reproductive strategy in seahorses, where the female lays eggs in the male's abdominal brood pouch, and the eggs are fertilized within this pouch. The male then gestates the young until birth, which provides a safe environment for the offspring during their development, greatly increasing their chances of survival.C. Baby crocodiles travel on their mother's back: This behavior provides protection to the young crocodiles from potential predators during their early life stages when they are most vulnerable.Conversely, choices B, D, and E are related to different aspects of animal behavior and do not directly contribute to the protection of offspring.
Lucas rubs a plastic ruler on his sweater. He waves the ruler above a pile of shredded paper and notices that the pieces of paper get attracted to the ruler. Which attractive force is responsible for this?
Final answer:
The attractive force observed when a charged plastic ruler attracts shredded paper is the electric force, due to the induced separation of charges within the uncharged paper.
Explanation:
The attractive force responsible for the shredded paper being attracted to the plastic ruler rubbed on a sweater is the electric force. When Lucas rubbed the ruler on his sweater, it gained an electric charge due to the transfer of electrons, a process known as triboelectric charging. The charged ruler creates an electric field around it, which induces a separation of charges within the nearby uncharged pieces of paper. The side of the paper closer to the ruler becomes oppositely charged, leading to attraction due to the electric force. This is similar to how a charged piece of tape can attract uncharged pieces of paper from a distance. The interaction observed is a fundamental expression of electrical forces between atoms, a concept that also explains why tape sticks to paper, among other human-scale forces.
Will anxious children grow up to be fearful or relaxed adults? This question most directly highlights the issue of
The questions about whether anxious children grow up to be fearful or relaxed adults highlight stability or change.
The stability-change debate is whether the personality traits that can be seen in a person at birth will remain constant throughout the life span of the person or if it'll change later.
Therefore, the question about whether anxious children grow up to be fearful or relaxed adults relates to the stability-change debate.
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the distance between the Earth and the Sun is quite large. Which numbers are correct distances between them? Check all that apply.
the distance between the earth and the sun is, I believe 92.96 million miles.
Answer:93 million miles
149.6 million kilometers
Explanation:
You are an ecologist who discovers a new species of algae living in the fur of the brown-throated sloth. whose system of naming will you use to classify this new organism?
Answer:
You will use the Linée Classification System
Explanation:
Linée, the naturalist, physician and teacher, created a system of classification and nomenclature of living things in 1735, which is still used today with few modifications.
In Linée's system, all living things are grouped into different categories. In all there are seven taxonomic categories. The largest and most comprehensive is the kingdom. Each kingdom is divided into phyla. Each phylum is subdivided into classes. Each class is subdivided into orders. Each order is subdivided into families. Each family is subdivided into gender. Each genus is subdivided into species.
The species is the basic category. In it are individuals who are capable of reproducing among themselves and of producing fertile descendants.
Thus, the Linée Classification and Naming System is the best system for an ecologist to correctly classify and name that algae.
What are the cell structures that are found in both a bacterial cell and an animal cell?
Structures that are common in animal and bacterial cell :
Cytoplasm : Gel-like matrix composed of water, enzymes, nutrients, wastes.Ribosomes.Chromosome ( nucleic acid DNA ). Plasmids.Cytoplasmic membrane.Both bacterial cells and animal cells contain common structures, including the plasma membrane, cytoplasm, genetic material (DNA and RNA), and ribosomes. These elements play crucial roles in the basic life functions of cells.
Explanation:The cell structures that are found in both a bacterial cell (prokaryotic) and an animal cell (eukaryotic) include the plasma membrane, cytoplasm, genetic material (DNA and RNA), and ribosomes. The plasma membrane functions as a barrier for the cell and separates the cell from its environment. The cytoplasm is a jelly-like substance inside the cell. Genetic material, which can be in the form of DNA or RNA, is the cell's hereditary information. Ribosomes are responsible for protein synthesis.
Bacterial cells come in various shapes, including cocci (spherical), bacilli (rod-shaped), and spirilli (spiral-shaped), but these shapes aren't related to their structural similarity with animal cells. It's important to note that while these structures are common to both cell types, their detailed makeup and the organization within the cell can differ.
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!!!!!!!!!!!!!! Please help with this:
Cameron was given the following series of observations. Which represents a theory?
Rocks are found on the ocean floor.
Rocks can form volcanoes.
Rocks break down over time.
Certain types of rocks form deep inside Earth.
**It is not C or D, I really don't understand this question. I don't have the question anymore because the last time I reset my quiz it wasn't one of the ten but I still want to know the explanation
Answer:
Rocks can form volcanoes.
Explanation:
Every scientific theory begins as a hypothesis. A scientific hypothesis is a suggested solution to an unexplained occurrence that does not fit with a currently accepted scientific theory. For the options given in the question, the hypothesis would be "Rocks can form volcanoes." In other words a hypothesis is an idea that has not yet been proven. If enough evidence accumulates to support a hypothesis, it goes to the next step - known as theory - in the scientific method and becomes accepted as a valid explanation of a phenomenon.
How do plate tectonics explain the formation and metamorphic rocks?
Metamorphic rocks are formed from other rock that has been subjected to very high temperature and pressure.
When one of the earth's plates comes in contact with another either by both traveling opposite directions, straight into each other, or from one slipping under the other (subduction zone), the pressure/friction of the plates against each other melts the rocks and after they cool they are metamorphic. Example is in Washington state when the Juan de fuca plate is going under the North American plate the pressure/friction of this melts the rocks which then form metmorphic rock.
Plate tectonics explain the formation and metamorphic rocks as follows:
Due to the tectonic activity of the terrestrial lithosphere, igneous and sedimentary rocks formed in certain environments and under precise environmental conditions, can be subjected to new conditions (essentially pressure and temperature).
Under the new conditions, and frequently under the action of tectonic stresses (linked, for example, to the formation of mountain ranges), the pre-existing rocks are transformed, giving rise to metamorphic rocks.
Its fundamental characteristic is to present blast texture, and in the cases of having suffered deformation, anisotropic factories.
Most metamorphic rocks are the result of this phenomenon, which occurs in very large areas that are subjected to extreme temperatures, pressures, and deformations.
Along plate tectonics, mainly on the convergent plate where rocks are intensely deformed and crystallized during convergence and subduction.
Therefore, we can conclude that metamorphic rocks are the result of tectonic stresses where the rocks are intensely deformed, giving rise to metamorphic rocks.
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What is the main characteristic of eusocial groups? seasonal migration periods of solitary behavior divison of labor cooperative hunting
Answer;
Division of Labor
Explanation;
Eusocial animals express complex behaviors, like group decision-making.
Eusocial animals share several characteristics which includes: adults live in groups, cooperative care of juveniles (individuals care for brood that is not their own), reproductive division of labor (not all individuals get to reproduce), and overlap of generations.
For example; Ants, termites and many species of bees and wasps form tightly integrated social groups in which permanently nonreproducing workers help rear the offspring of a few fertile individuals, the queens and males.
The main characteristic of said group is Division of Labor.
Linn abuse used the____ language in his two-word naming system
which words are missing from the diagram
1. A) Chlorophyll B) ATP
2. A) NADPH. B) Sunlight
3. A) Chlorophyll B) Water
4. A) Oxygen. B) ATP
PLZ HELP
This is the liquid. Within living cells. . It is important because it helps materials to spread through the cell
Easy just get some water and get a cup and pow
Cells undergo differentiation during embryonic development. An individual skin cell develops differently from a muscle cell because
A) the cells have different DNA.
B) the cells have different genes.
C) the cells express different genes.
D) the cells have different chromosomes.
The correct answer is C). An individual skin cell develops differently from a muscle cell because the cells express different genes.
During embryonic development, cells differentiate into various cell types, such as skin cells, muscle cells, nerve cells, etc. This process is governed by the expression of different sets of genes within each cell, even though all cells in an organism typically contain the same DNA. Here's the reasoning behind the
A) the cells have different DNA: This option is incorrect because generally, all cells in an individual's body have the same DNA. There are exceptions, such as immune cells that undergo somatic recombination to create diversity in antibodies, but for the most part, the DNA is identical across cell types.
B) the cells have different genes: This option is also incorrect. As mentioned, all cells have the same set of genes because they all contain the same genome. The difference lies not in the presence of different genes but in which genes are active or silent.
C) the cells express different genes: This option is correct. While the DNA is the same across different cell types, the expression of genes varies. This means that different sets of genes are turned on or off, leading to the production of different proteins that dictate the cell's structure and function. For example, a skin cell will express genes that produce keratin, a protein important for skin structure, while a muscle cell will express genes that produce proteins like actin and myosin, which are crucial for muscle contraction.
D) the cells have different chromosomes: This option is incorrect because, with few exceptions, all cells in an organism have the same number and types of chromosomes. The exceptions include germ cells (sperm and egg cells) which have half the number of chromosomes, and some cancer cells that may have abnormal numbers of chromosomes. However, the differentiation of cells into different types is not due to having different chromosomes but rather the differential expression of genes on those chromosomes.
Therefore, the key to cell differentiation is the differential expression of genes, not the presence of different DNA, genes, or chromosomes.
which of the following accurately describes the way in which a muscle moves?
A. No ATP is needed is the contraction of a muscle.
B. During contraction, cross-bridges pull the myosin to the center of the sarcomere.
C. Interaction and attachment between myosin and actin cause a muscle fiber to relax.
D. When actin filaments are pulled toward the center of the sacomere, the fiber shortens.
(02.03 HC) Studies have shown that some medications can damage mitochondria. Which of the following would you predict to be the most likely long-term effect on an organism with damaged mitochondria?
A. Proteins would not be modified after being synthesized, and the organism would be unable to grow.
B. The organism would suffer as its cells would be less able to provide the energy needed to carry out life functions.
C. Substances would not be able to enter or leave the cells of the organism, and affected cells would eventually burst.
D. Errors would be made during DNA replication, and the organism would be more likely to develop cancer.
B. The organism would suffer as its cells would be less able to provide the energy needed to carry out life functions.
What are the two major differences between a plant cell and an animal cell?
How is a covalent bond formed between atoms?
A: by the sharing of protons
B: by the sharing of electrons
C: by the transferring of protons
D: transferring electrons
B. by the sharing of electrons
Answer choices A and C are incorrect because covalent bonds form as a result of electrons (protons are kind of irrelevant). Answer choice D is incorrect because it describes an ionic bond.
Further study topics: water polarity, hydrogen bonds, free radicals, valence electrons, and more!
The purpose of photosynthesis is to produce usable chemical energy or glucose from solar energy. If the formula for glucose is c6h12o6, how many atoms of hydrogen are used to produce the glucose
How does the small size of a spore help its function?
a) Spores can travel far.
b) Spores provide structure.
c) Spores fit into a cell.
d) Spores are specialized.
Answer:
Spores can travel far.
Explanation:
Spores are carried by the wind or on animal fur.
Each year when a child sees their doctor for their annual check up one of the first things the nurse does is weigh them and measure their height. What life process is the nurse assessing?
A) digestion
B) excretion
C) growth
D) respiration
The answer is C) Growth.
The answer is growth because, when you go to a doctor the measure you hight to make sure you on track and your growing properly. So doctors make a chart of how much you've grown over the year.
Doctor's looks at you chart when you visit them yearly, they do this to make sure you don't have any problems with your bones or if your just a late bloomer when it comes to growning..
When calcium blood levels fall, one of the body's glands releases a special hormone that increases calcium levels. This is an example of _____.
A. positive feedback
B. negative feedback
C.neutral feedback
Answer:
A. positive feedback
Explanation:
Lipids enter the bloodstream directly after digestion. lipids enter the bloodstream directly after digestion.
a. True
b. False
Lipids, after being broken down, are absorbed by cells in the intestine, reformed into chylomicrons, and are transported through the lymphatic system before they eventually enter the bloodstream. They do not, thus, enter the bloodstream directly after digestion.
Explanation:The statement 'lipids enter the bloodstream directly after digestion' is false. Lipids are indeed broken down during digestion, but they enter the bloodstream via a slightly indirect route. During digestion, triglycerides, a type of lipid, are broken down into smaller fatty acids and monoglyceride molecules in the intestine. These smaller molecules are then absorbed by absorptive cells called enterocytes in the small intestine.
However, unlike other nutrients such as amino acids and monosaccharides, lipids don't travel directly to the bloodstream. Inside the enterocytes, the fatty acids and monoglycerides are recombined to form triglycerides again, which are then packed into vesicles called chylomicrons. These chylomicrons are released from the enterocytes and enter lacteals, which are tiny lymphatic vessels present in the intestine.
From the lacteals, chylomicrons travel through the lymphatic system and eventually reach the bloodstream. It is in this way that lipids enter the bloodstream, but not directly immediately after digestion.
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What element is found it all organic molecules
What two skills or abilities are important for him to have to be successful quality control inspector
The two skills are understanding blueprints an technical documents and using specialized tools to test products.
A successful quality control inspector needs a strong attention to detail and problem-solving skills. The inspector must be able to detect any imperfections and determine the best method to correct any issues found.
Explanation:To be successful as a quality control inspector, two important skills or abilities are attention to detail and problem-solving skills. Attention to detail is crucial because quality control inspectors are responsible for identifying even the slightest imperfections or deviations from the set standards. They have to ensure that the products meet certain criteria and specifications. If they overlook or miss a fault, it could lead to larger problems down the line.
Problem-solving skills are equally important because once a problem is identified, the inspector needs to determine the best course of action to resolve it. This can involve a thorough analysis of the issue, developing an understanding of the cause and then implementing a solution to correct it.
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Cells in the leaves of plants contain specialized structures called chlorplasts. How are chloroplasts related to the function of the leaf cells?
they help plants photosynthesise
If a cat has 38 chromosomes in each of its body cells, how many chromosomes will be in each daughter cell after mitosis? A. 19 b. 76 c. 11 d. 38
Answer:
The answer is d)38 chromosomes in each daughter cell.
Explanation:
The answer is very simple. Remember that "Mitosis" is the process where a cell divides once and forms 2 identical cells that are exactly the same as the original. In the process the sequence of each chromosome is duplicated and then contained in a separated nucleus each. At the end each nucleus separates with the exact same information and concludes mitosis.
There are 10 grams of fat 30 grams of carbohydrate and 4 grams of protein in the dessert. What percentage of calories comes from fat
Approximately 39.82% of the calories in the dessert come from fat. Therefore option 1 is correct.
To determine the percentage of calories that come from fat in the dessert, we need to calculate the energy contribution of fat and compare it to the total energy content of the dessert.
Here's an explanation of how to calculate it:
1. Determine the energy value per gram of each macronutrient:
Fat: 1 gram of fat provides 9 calories.
Carbohydrate: 1 gram of carbohydrate provides 4 calories.
Protein: 1 gram of protein provides 4 calories.
2. Calculate the energy contribution of each macronutrient in the dessert:
Fat: 10 grams of fat × 9 calories/gram = 90 calories from fat.
Carbohydrate: 30 grams of carbohydrate × 4 calories/gram = 120 calories from carbohydrate.
Protein: 4 grams of protein × 4 calories/gram = 16 calories from protein.
3. Calculate the total energy content of the dessert by summing up the energy contributions from each macronutrient:
Total calories = 90 calories from fat + 120 calories from carbohydrate + 16 calories from protein = 226 calories.
4. Calculate the percentage of calories from fat:
Percentage of calories from fat = (Calories from fat / Total calories) × 100
Percentage of calories from fat = (90 calories / 226 calories) × 100 ≈ 39.82%
Therefore, approximately 39.82% of the calories in the dessert come from fat.
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Your question is incomplete, but most probably your full question was.
There are 10 grams of fat 30 grams of carbohydrate and 4 grams of protein in the dessert. What percentage of calories comes from fat
1. 39.82%
2. 44.44%
3. 47.06%
4. 50.00%