Answer:
its a on ed
Explanation:
The observation that most likely led to Jenna’s conclusion is a change of odor. Thus, the correct option is A.
What are Chemical changes?Chemical changes may be defined as those changes through which one chemical substance gets transformed into another chemical substance. This occurs in a variety of steps and types.
A difference in the smell of leftover mashed potatoes indicates the change in odor which is observed by Jenna.
A decrease in temperature, a change in moisture, and a decrease in mass do not make any sense with respect to difference in smell.
Therefore, the observation that most likely led to Jenna’s conclusion is a change of odor. Thus, the correct option is A.
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the disease erythroblastosis fetalis (also called hemolytic disease of the newborn) develops in a fetus or a newborn infant with Rh-positive blood and an Rh-negative mother. Symptoms results when maternal anti-Rh antibodies cross the placenta and interact with the fetus' erythrocytes. Why are the children of Rh-positive mothers not ay risk for this disease
Answer:
Explanation:
Hemolytic Disease of the newborn (HDN, Erythroblastosis Fetalis) is a blood disorder occurring at or around birth, where the blood groups of the mother and baby are not compatible. It occurs when the antibodies from a Rhesus negative (Rh-negative) mother, who has been sensitized from previous pregnancies or other means (transfusion etc), gives birth to an Rh-positive baby, and the blood of the mother and the baby eventually mixes. This causes the anti-Rhesus antibodies in the mother's blood to attack the Rhesus antigen (Also Called Anti-D antigen) on the baby's red blood cells, causing hemolysis that leads to several unpleasant symptoms.
Children of Rh-positive mothers are not at risk of developing HDN, because the mother does not produce anti-Rh antibodies since she is positive, hence there will be no antibodies to cross the placenta and react with the baby's rhesus antigens for Rh-positive babies.
What challenges cell biologists face in the 21st century?
Answer:
There are many types of challenges are faced by the scientists in 21st century. some are as given below:
Explanation:
1. Getting biodiversity. We're losing species at a disturbing rate, and we have to comprehend what the implications of that may be.
2. sustainable development. Like feasible agriculture, yet more broad sense. Discovering approaches to accommodate human needs while limiting the mischief we cause to the earth is urgent.
3. Everything about hereditary qualities. It's simply so much fun.
4. The most effective method to cut across political, social, and social limits and spur enormous and little scope activity to lessen biodiversity loss. This point may have a hefty sociology component, yet it's significant. All the natural and biological information on the planet won't make any difference on the off chance that we can't get individuals to follow up on it.
The "calico" pattern of coat coloration in female cats is a result of:__________
a. fragile X syndrome
b. x chromosome inactivation
c. unequal crossing over
d. endoreduplication
e. Turner syndrome
Answer:
b. x chromosome inactivation
Explanation:
As you know, female cats have an x chromosome inherited from their mother and an x chromosome inherited from their father. After these two chromosomes are inherited and determine the sex of the cat, one of them will be disabled at some point in fetal development. Inside the X chromosome is the gene that determines the coat color of cats, when one of the two x chromosomes is deactivated, the other x chromosome will have all of its cells activated. In this case, if the activated chromosome is the one that has genes for the "cheetah" pattern of the coat color, all the descendants of this female cat also have the same coat.
What types of cells contain a cell
wall?
Answer:
Plant cell
Explanation:
Cell wall only in plant cells
In an atom, which particles make up
the
nucleus?
Answer:
Neutrons And protons
please explain the interactions and interdependence of organisms within a biosphere. please provide me with a different example on these interactions and interdependence in the picture below. include nonliving organisms an illustrate why they are essential organisms
The use of energy and matter by living organisms
_________
Answer:
it involves chemical cycling from chemical energy from the sun to heat lost from the ecosystem :D
Explanation:
hope this helps, its different options on canvas (plz give brainliest
The use of energy and matter by living organisms involves chemical cycling from light energy from the sun and returning of chemicals to the cycle.
Photosynthesis is the process by which plants and algae use light energy from the sun, water (H2O), and carbon dioxide (CO2) in order to produce oxygen (O2) and energy in the form of simple carbohydrates (sugar).The overall chemical reactions in the photosynthetic process can be written as 6CO2 + 6H2O → C6H12O6 (glucose) + 6O2The biogeochemical cycles refer to the pathways by which essential compounds of living things are circulated.For example, the carbon cycle involves the exchange of carbon between biotic (organisms) and abiotic (environment) factors.During photosynthesis, plants absorb CO2 from the air to produce carbohydrates such as glucose, thereby decreasing the level of CO2 in the atmosphere.Plants in turn serve as food for herbivores.Finally, when herbivores dead, carbon-based compounds are broken down into simpler carbon compounds by decomposers (i.e. bacteria and fungi).In conclusion, the use of energy and matter by living organisms involves chemical cycling from light energy from the sun for the production of chemical energy in food to the decomposition and the returning of chemicals to the cycle.
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When would a model be most beneficial to a scientist?
A. when a scientist wants to do a hands-on experiment
B.when a scientist wants to represent things that are either very large or very small
C.when a scientist wants to be creative
D.when a scientist doesn't want to confuse other scientists
Answer:
I believe it is A
Explanation:
A biology student wanted to study the effect of fertilizer on the growth of tomato plants. He placed four of
the same type of tomato plants into separate containers, each containing the same amount of soil. Each
pot received a different watering solution containing varying amounts of fertilizer.
The table below shows the average height of the plants by the end of one week.
Plant group
Fertilizer amount (g)
Avg height of plants (cm)
1
O
3.0
2.
5
3.2
3
10
4.4
20
5.0
Which of the plant groups is the control group?
Answer:
plant group 1
Explanation:
Because, it is the only one that has not gotten fertilizer
The plant group that is the control group is plant group 1.
What are fertilizers?Any substance of earthy or man-made origin applied to soil or plant tissues to provide plant nutrients is referred to as fertilizers. It's possible to distinguish fertilizers from spreading agents.
The biology student is studying the effect of fertilizers on plants. Fertilizers increase the growth of the plant, and they also affect the soil of the plant in which they grow.
There are three groups of plants that are used. The growth of the first plant is O and 3.0. The growth of the second plant is 5, 3.2, 3, and 10 and the growth of the third plant is 10, 4.4, 20, and 5.0.
By seeing the Table, we can assume that the growth of plant group 1 is most affected and all other plants have similar.
Thus, the plant group is 1.
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animal behavior is only influenced by genes true or false
False. Animal behavior can be influenced by many different things but genes are not a main factor at all. Some examples that would impact animal behavior would be diet, daily habits, family or herd size, and even contact with humans.
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Which of the following describes research that would be considered basic
science?
A. Park rangers are trying to find out why a group of elm trees died.
B. Doctors in a hospital are developing a new surgical technique.
C. A professor at a unyersity is observing the mating behavior of
freshwater fish
D. A dairy farmer is designing a new machine for milking cows.
Answer:
C. A professor at a university is observing the mating behavior of
freshwater fish
Explanation:
Things of the same species have similar morphology and can ____
A student conducted an experiment with two rose plants to determine if a liquid formula for fertilizer produced greater growth than a dry formula. After testing each fertilizer on two different plants for one month, his data led to the conclusion that the liquid formula was a better promoter of plant growth. When he described his conclusion to his teacher, she told him he needed to conduct additional trials. The teacher most likely asked for additional trials because she did not believe the new formula helped plants grow better than the old formula. it was necessary to see data from more plants before the conclusion could be accepted. it was necessary to have tested the fertilizer on different kinds of plants. she thought he should test additional fertilizer formulas on the same two plants.
Answer: it was necessary to see data from more plants before the conclusion could be accepted
Explanation: i got it right
Answer:
necessary to see data from more plants before the conclusion could be accepted
Explanation:
took the test
The blood-brain barrier (BBB) is most permeable to which of the following?
A. Platelets, white blood cells and red blood cells.
B. Sodium, potassium and chloride.
C. Glucose and oxygen.
D. Antibiotics.
Answer:
C. Glucose and oxygen.
Explanation:
The blood-brain barrier is a composition of endothelial cells that regulate the entry of substances into the extracellular fluid found in the central nervous system. Their high degree of selective permeability ensures that no solutes can cross the barrier, and only the right substances which are crucial to the workings of the central nervous system can scale through.
Oxygen which is needed for the proper functioning of the central nervous system and which is hydrophobic in nature is allowed to pass the blood-brain barrier. Glucose too which is an important nutrient/macromolecule for brain health can also move through the blood-brain barrier.
An ostrich and an emu are both flightless birds found on completely different continents (ostrich in Africa, emu in Australia). These birds have slightly different evolutionary histories, but have independently evolved similar adaptations due in part to the similar habitats they occupy. What type of evidence for evolution do these birds present
Answer:
The correct answer is "Biogeography".
Explanation:
The missing options for this question are:
-Comparative embryology
-Biogeography
-Bioinformatics
-Fossils
The correct answer is "Biogeography".
Biogeography is a field of study focused on how species have changed over its evolutionary history regarding its distribution and geographical localization. Biogeography particularly examines biological diversity patterns. The evidence of evolution between the ostrich and the emu populations is of biogeographical type, since they are located in different regions but they are exposed to similar habitats.
What distinguishes the Kingdom Archaebacteria from Eubacteria ?
Answer:
Can you attach the question as a photo
what molecule of carbon has the least energy?
13. The differences between two molecules include the type of sugar that
forms a section of the molecules and the identity of one of the four
nitrogenous bases that make up another section of the molecules. These
two molecules are - *
Answer:
DNA and RNA are the molucules
Explanation:
Martha has been having difficulty swallowing, although she does not have a cold or sore throat. She also has chronic constipation. Her doctor explained that she would be using a nonsurgical procedure to examine Martha’s digestive tract. What diagnostic procedure is the doctor likely to use to assess Martha’s condition? A. endoscopy B. X-ray C. hemoccult test D. blood test
Answer:
Blood test
Explanation:
From those two symptoms blood test would be the best in my opinion .
Answer:
D,blood test is correct
in summer, what happens to the hurricane’s temperature, category, and speed as it travels across a body of water and then land?
I think it starts to get slower as soon as it starts traveling because then hurricanes wouldnt be as bad and would be long, and it could possible get worse as it travels across the water because it could be sucking up water so then it would get bigger and worse. The tempertaure will get colder because it will then start to pour and cause destruction and make it windy and very chilly.
In summer the temperature of hurricane will get colder because it will then start to pour and cause destruction and make it windy and very chilly and it could be sucking up water so then it would get bigger and worse.
What is hurricane?Hurricane has been defined as the conditions which has been expected in a specified area. As defined by National Oceanic and Atmospheric Administration (NOAA), it means that hurricane conditions (sustained winds of 74 mph or greater) are possible within your area and hurricane warnings means hurricane conditions are expected in an area.
The warm ocean water allows more water to get evaporate and this gives more power for the Hurricane to began. Powerful winds clash as a result of the air to move towards upwards which has light wind around the area allows it to start moving round and round with this whole process continues to make the Hurricane powerful and faster.
Therefore, In summer the temperature of hurricane will get colder because it will then start to pour and cause destruction and make it windy and very chilly and it could be sucking up water so then it would get bigger and worse.
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What are two reactants needed to for cellular respiration
Answer:
oxygen and gluclose
Explanation:
if meat is coated with tenderizer and them placed in a refrigerator for a short time, how would the enzyme be affected
Answer:
Meat tenderizer contains an enzyme that interacts with meat. If meat is coated with tenderizer and then placed in a refrigerator for a short time, how would the enzyme be affected? ... (4) It would no longer act as an enzyme.
Explanation:
Match the following examples to the correct type of bone marking. a shallow depression in the back of the knee joint openings in the cervical vertebrae through which the vertebral artery travels a depression on the skull that houses the frontal lobes of the brain a bony projection on the tibia, below the knee a hole created by bones of the pelvis
Answer:
1. Fossa....a shallow depression in the back of the knee joint
2.Foramen.....openings in the cervical vertebrae through which the vertebral artery travels
3. Fossa....a depression on the skull that houses the frontal lobes of the brain
4. Tubercle...a bony projection on the tibia, below the knee
5. Foramen....a hole created by bones of the pelvis
Write a short paragraph describing the role of all types of lipids
Lipid Biological Functions
-Chemical messengers.
-Storage and provision of energy.
-Maintenance of temperature.
-Membrane lipid layer formation.
-Cholesterol formation.
-Prostaglandin formation and role in inflammation.
Lysosomes contain enzymes that are necessary for what?
Answer:
They break down all types of biological polymers—proteins, nucleic acids, carbohydrates, and lipids.
Explanation:
Answer:
breaking down of food
Explanation:
Lysosomes are membrane-enclosed organelles that contain an array of enzymes capable of breaking down all types of biological polymers—proteins, nucleic acids, carbohydrates, and lipids.
why is the mantle heated by the core and not the crust
Answer:
Hotter material, heated by the core of the Earth rise slowly to the surface of the mantle. Material cools near the crust and then sinks back down to the core, to repeat the process all over again.
Which of the following is an example of an organism?
Answer:
I am not sure show me a picture
In figure 1, which symbol (unshaded square or shaded circle) represents the number of wildebeest, and which represents the percentage of wildebeest with rinderpest? How do you know?
What is the appropriate protein portion for men?
A. 2 palm portions
B. 3 palm portions
C. 2 cupped handfuls
D. 3 cupped handfuls
Answer:
A is correct- 2 palm portions is an appropriate protein portion for men
Explanation:
Two palm portions is the appropriate protein portion needed for men. It is advised to consume 0.8 grams of fat per kilogram of body weight. So, option A is right.
Amino acids are the building blocks of proteins. Your body requires amino acids to create hormones and enzymes, as well as to build and repair muscles and bones. They can also be utilized as a source of energy.
For a typical sedentary adult, the suggested dietary allowance is 0.8 grams per kilogram of body weight.
For men, 2 palm sized portions of protein is recommended in each meal. Palm is used to measure protein and handfuls is used to measure carbohydrates.
30 grams of protein are contained in one palm serving. Two palm pieces would therefore provide roughly 60 grams of protein for a man having 50-70 kilogram, which is a sufficient quantity for most guys.
Therefore, option A, 2 palm portions of protein is the appropriate protein portion for men is the correct answer.
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Which set of features below best describes the radiolaria?
a. phytoplankton; silica 'hard parts'
b. zooplankton; silica 'hard parts'
c. zooplankton; calcite 'hard parts'
d. phytoplankton; cellulose 'hard parts'
Answer:
The correct option is b
Explanation:
Radiolaria (or radiozoa) are protozoa that produce mineral skeleton often made up of silica. They exist as zooplankton in ocean bodies. Zooplanktons are heterotropic planktons that live in open water bodies; they feed on bacteria and algae and are fed on by fish and insects.
The skeletal remains of Radiolaria make up a large part of the ocean floor and are referred to as siliceous ooze.
From the above explanation, we can deduce that the correct option is b
Answer:
The correct option is b
Explanation:
Radiolaria (or radiozoa) are protozoa that produce a mineral skeleton often made up of silica. They exist as zooplankton in ocean bodies. Zooplanktons are heterotropic planktons that live in open water bodies; they feed on bacteria and algae and are fed on by fish and insects.
The skeletal remains of Radiolaria make up a large part of the ocean floor and are referred to as siliceous ooze.
From the above explanation, we can deduce that the correct option is b