Answer:
Explanation: A water molecule, because of its shape, is a polar molecule. That is, it has one side that is positively charged and one side that is negatively charged. The molecule is made up of two hydrogen atoms and one oxygen atom. The bonds between the atoms are called covalent bonds, because the atoms share electrons. The hydrogen atoms have one electron each.
Because they share those electrons with the oxygen atom, the electrons tend to stay close to the oxygen atom and the outside of the hydrogen atom tends to be positively charged. The oxygen atom has eight electrons. Most of those tend to stay away from the hydrogen atoms, and cause the outside of the oxygen atom to have a negative charge.
Answer: It has one side that is positively charged and one side that's negatively charged.
How long have people been debating the idea of evolution?
Which correctly lists three tools that are currently used to collect images during space exploration? A. rover, satellite, space station
B. orbiter, space station, space shuttle
C. satellite, rover, orbiter
D. space shuttle, space station, rover
Answer:
D
Explanation:
Answer
A) rover, satellite, space station
The structure below is used in agriculture. What could be a benefit of this
technology?
The answer is c hope this help you
what is the function of a nerve cell in a multicellular organism
Answer:to help the other cells function
Explanation:
Answer: carry and transmit signals
Explanation:
What type of epistasis between locus A and B could be explained by the following biochemical pathway? Select one: a) dominant/recessive epistasis b) duplicate genes with cumulative effect c) duplicate recessive epistasis d) single dominant epistasis e) single recessive epistasis f) duplicate dominant epistasis
Single dominant epistasis between locus A and B could be explained. Hence, option D is correct.
What is epistasis?Epistasis is a situation in genetics where the outcome of a gene mutation depends on the presence or absence of mutations in one or more additional genes, referred to as modifier genes, respectively. To put it another way, the outcome of the mutation depends on the genetic context in which it arises.
The relationship that exists between baldness and hair colour is an illustration of epistasis. A gene for red or blond hair would be epistatic to one for complete baldness. The genes for hair color and baldness are antagonistic to one another. The effects are non-additive since the hair colour genes are superseded by the baldness phenotype.
Epistasis gene interactions can be classified into the following six categories: dominant, dominant inhibitory, duplicate dominant, duplicate recessive, polymeric gene interaction, and recessive.
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40. When a typical male speaker phonates, his vocal folds open and close
times per second.
Select one:
a. 2
b. 10
c. 125
d. 500
e. 1,000
Answer:
The correct answer is - option C. 125.
Explanation:
Phonates are the ability to produce or articulate the sound especially with the lp of the viba\ration by his or her vocal folds. When an individual vibrates his vocal folds or speaks the sound produces which is known as the phonation.
When a typical male speaker phonates, his vocal folds open and close
125 times per second.
The correct answer is - option C. 125.
The _______ converts food into energy. It is found in both plants and animal cells.
Answer: Mitochondria
Explanation: mitochondria convert food energy to power the cells
No system is completely closed off from its surroundings
Which example represents a system that is almost completely closed
A- a wood burning-fireplace
B- A capped thermos
C- An uncapped soda bottle
D- a pot of boiling water
Answer:
B a capped thermos
Explanation:
what is a filament? (plant topic)
Answer:
The stamen of a flower — the part that produces pollen — consists of a slender stalk, called a filament and an anther. The filament supports the anther, which is where pollen develops. The word filament is from the Latin word filum, which means "thread." Filament, in fact, can be a synonym for thread.
Answer:
A filament is the slender threadlike object or fibre, especially one found in animal or plant structures.
a filament can also be defined as the slender part of a stamen that supports the anther.
Explanation:
Which element has fewer than four dots in its electron dot diagrams?
O arsenic (As)
sulfur (S)
krypton (KI)
O gallium (Ga)
Answer:
O gallium (Ga)
Explanation:
Your Welcome;)
The element that has less than four dots in its dot structure is gallium.
What is Lewis structure?The term Lewis structure has to do with the arrangement of outermost electrons in an atom. The Lewis structure consists of the symbol of the element as well as the number of electrons in the outermost shell shown as dots.
Gallium is a member of group 13 hence it has three electrons in its outermost shell. Therefore, gallium has less than four electrons in its dot structure.
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Questions:
1. How is a cell membrane like the plastic bag in the experiment?
2. Define diffusion.
3. List two reasons why molecules will not diffuse into cells.
Explanation:
1. cell membranes are partialy permeable, only allowing passage to some certain molecules.
2. diffusion is the movement of molecules across partially permeable membrane down concentration gradient.
3. the molecules are too big to pass through partially permeable membrane. the concentration of the molecule might be higher in the cell than in the solution/surroundings.
A solution with pH of 7 is ??
Answer:
neutral solution
Explanation:
This pH value of 7 is important because it indicates a neutral solution. All other substances are compared to this neutral point. Any solution that has a pH of less than 7 is considered acidic, and anything above a pH of 7 is basic
Why are interactions between organisms important
How are cells, tissues, organ, and systems related?
Answer: Cells
Explanation:
The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs.
URGENT. WORTH 100 POINTS How many ions do: Sodium has? calcium have? Aluminum has? Chlorine has? beryllium have? Fluorine have? Lithium have? Iodine have? Oxygen have? Potassium has? Magnesium has? Phosphorus have? I just need a number for each of them.
Na (Sodium) has a +1 charge.
An ion of calcium has a +2 charge, and an ion of chlorine has a -1 charge.
The charge of an aluminum ion is typically 3+.
A chlorine ion has -1 charge.
Beryllium is 2+ charge.
Flourine has -1 charge.
Lithium has +1 charge.
Iodine has -1 charge.
Oxygen has -2 charge.
Potassium has +1 charge.
Magnesium has +2 charge.
Phosphorus has -3 charge.
The ________ is a substage lens that concentrates light on the specimen.
Answer:
microscope's condenser
Explanation:
The microscope's condenser is a substage lens that concentrates light on the specimen.
The condenser of a microscope is a structure that helps concentrate light rays from the light source to illuminate the specimen on the stage of the microscope. It is made up of a system of lens that converges the ray of light and an aperture diaphragm that can be used to control the amount of light that gets to the specimen on the stage of the microscope.
Which of the following constitutes the basic structural organization of life?
A) species living in an environment
B) cells that make up tissues and structures
C) cell organelles that combine to form nuclei D) weather conditions in a habitat
"Cells that make up tissues and structures" is the statement that best describes the basic structural organization of life.
What is the basic structural organization of life?It is the internal organization of living beings that corresponds to cells, tissues, organs and systems.
Characteristics of the basic structural organization of lifeThe cell is the structural and functional unit of life that carries out all the processes that make the constitution of vital transformations possible.According to their functions and needs, the cells group together and form tissues, structures with similar cells that perform the same function, ultimately constituting a complex system that is the organism.Therefore, we can conclude that the cell is the basic, structural and functional unit of living beings; the simplest unit that can exist as an independent living system.
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bacteria can normally be found in many areas of the body. where should they never be found related to the body
Answer: Brain and Circulatory system
Explanation:
If a pea plant's alleles for height are tt, what is true of its parents?
A. Both parents were tall.
2 Pts
B. Both parents were short.
C. Both parents contributed a recessive allele.
А E
D. Both parents contributed a dominant allele.
Answer:
C
Explanation:
tt is a recessive allele so it can only be tt if the parents were both tt&tt or Tt&Tt
Answer:
C.
Reason:The plant got it's tt alleles from it's parents, so they would have had to have the recessive alleles to pass it down. This does not necessarily mean that the plants were short, though, as parent plants who both had Tt alleles would have had a chance to have an offspring with tt alleles also.
are cows and bulls in the same family? what is the name of the family?
Answer: hey friend! answer is yes, they in the same family called bovidae
Explanation: hope this helps!
why might the nucleus be referred to as the brain of the cell
Answer:
The nucleus is called the "brain" of the cell because it holds the information needed to conduct most of the cell's functions. Other molecules make proteins from that information on a regular basis - each moment of our lives
Hope this helps!
Experiment 1: A scientist is interested in whether increasing the temperature when germinating seeds will decrease the amount of time it takes for germination. Pepper seeds in two equivalent germination rooms will be included in the study. One room is maintained at 85 degrees, the other room is left at the usual temperature of 75 degrees.
- What is the independent variable, dependent variable, and control? *choices are 75 degree room, temperature, and germination rate
Answer:
3
Explanation:
What is the difference between the cloud model of the atom and the modern model?
Bohr's model treats electron energy levels as clearly defined orbital paths around the nucleus like planets orbit the Sun. The cloud model treats the energy levels as probability clouds, regions in which electrons are likely to be found.
A scientist observed that penguins move efficently through water.the scientist makes a that if a boat is designed with a propulsion system that moves like a penguin, then the boat will be more efficient than traditional boats
Answer:
i think it is its wont
Explanation:
1.What are examples of producers, primary consumers, secondary consumers, and tertiary consumers?
2.What are examples of herbivores and carnivore in this foot web?
3.What would happen in this food web if the frogs die out or left the habitat? How could affect the other animals?
Suggest one safe way to observe the eclipse of the sun
Answer:
there r eclipse glasses a way to observe eclipse of sun!
hope it helps!
The diagram is a model of the structure of glucose. The structural formula of glucose, C6H1206, shows a ring of 5 carbon atoms and 1 oxygen atom. 4 carbons in the ring are each bonded to an -H and an -OH group in addition to 2 neighboring atoms in the ring. The fifth carbon is bonded to a CH2OH group. What structural feature does glucose share with larger carbohydrates? A. a ratio of 1 carbon atom to 2 hydrogen atoms to 1 oxygen atom B. the presence of double covalent bonds between carbon atoms C. strong bonds between carbon atoms that cannot be broken D. ionic bonds between carbon atoms and oxygen atoms
Answer:
The correct answer is : A. a ratio of 1 carbon atom to 2 hydrogen atoms to 1 oxygen atom
Explanation:
Carbohydrates are the primary and major component of diet, these molecules give vitality to the body, predominantly by means of glucose, a fundamental sugar, which is an part of the starch and a fixing in different staple nourishment diet choices.
the significant chemical formula of carbohydrates is (CH2O)n. It can be exhibited or express by the proportion of the carbon to hydrogen to oxygen which is 1: 2: 1 in the particles of starches. Starches are additionally arranged into three sub-sorts, that is, monosaccharides, disaccharides, and polysaccharides. The monosaccharides are the basic sugars, for instance, glucose.
Thus, the correct answer is : A. a ratio of 1 carbon atom to 2 hydrogen atoms to 1 oxygen atom
help plsssss Thomson's contribution to the atomic theory was the discovery that negatively-charged electrons were embedded within a positively-charged "soup". Later on, Rutherford performed the gold foil experiment which altered Thomson's contribution. What were the conclusions of Rutherford's Gold Foil Experiment? Group of answer choices
The atom is made up of mostly empty space with a tiny, dense, positively-charged nucleus.
The atom is mostly empty space, with negative charge concentrated at the center.
The atom is mostly empty space, with positive charges spread evenly across it.
The atom is mostly empty space. No other conclusions could be made.
Answer:
A. the atom is made up of the mostly empty space with tiny, dense, positively-charged nucleus.
Explanation:
why might a newborn baby bleed more from a cut than a baby who is 1 month old.
Answer:
A newborn baby bleed more from a cut than a baby who is 1 month old because they are more delicate and have more of a thin skin compared to a 1 month old.
Hope it helps.
Adrenal medulla secretes norepinephrine following stimulation from the:_______.a) brainstem. b) diencephalon. c) hypothalamus. d) pituitary gland.
Answer: hypothalamus
Explanation:
hypothalamus is a portion of the brain, it contains a small number of nuclei and has many functions.
Hypothalamus is to link the nervous system, to the endocrine system through the pituitary gland to synthesize various hormones.
medulla is located in the inner part of the adrenal gland and secrete epinephrine and non epinephrine hormone that are triggered by physical and mental stress.