Answer:
1. Only small uncharged molecules can diffuse freely through phospholipid bilayers (Figure 2.49). Small nonpolar molecules, such as O2 and CO2, are soluble in the lipid bilayer and therefore can readily cross cell membranes. 2. Diffusion through a permeable membrane moves a substance from an area of high concentration (extracellular fluid, in this case) down its concentration gradient (into the cytoplasm). 3. Objects change their motion because unbalanced forces act on them. There are four main factors that affect the motion of objects. These factors are force, friction, inertia, and momentum.
Explanation:
Hope this helps. ^_^
Answer:
Examples include steroids and Vitamins
Phospholipids ,as the name implies fall under the category of lipids. Phospholipids have a hydrophilic "head" which has a strong attraction to water molecules.The hydrophilic head contains a phosphate group which allows for reactivity with water molecules.
Phospholipids also contains two hydrophobic "tails" which has a strong repulsion to water. The tails are derived from fatty acids and are joined by a glycerol molecule. These compounds are less reactive to water molecules .
These properties make phospholipids to be soluble in both water and oil which favors the movement of molecules such as Steroids and Vitamins in and out of the cells through the process called Diffusion.
The direction of movement depends on the concentration of molecules as they usually move from a region of high concentration to a region of lower concentration to ensure there is equilibrium and proper functioning of cells.
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When two true-breeding pea plants that show contrasting traits are crossed in a case of Complete Dominance Inheritance, all of the offspring show,
a) a different trait
b) a blend of the two parental traits
c) the dominant form of the trait
d) the recessive form of the trait
5. What are the range and median of this data set?
16, 10, 24, 12, 9, 14, 11, 14, 21
A. range = 5, median = 9
B. range = 5, median = 14
C. range = 15, median = 9
D. range = 15, median = 14
Answer:
c
Explanation:
The answer is c
Range and median of this data set 16, 10, 24, 12, 9, 14, 11, 14, 21When a list of numbers is arranged from smallest to largest, the median is the middle number, hence option C is correct.
What are the range and median?
The median of these outcomes. The range, in this case, is, where the range is the difference between the lowest and highest values.
Take the sum of all the numbers and divide it by the total number of numbers in the list to get the value of the mean.
Calculate the mean by adding up the center values and dividing them by two in order to determine the median.
Therefore, 16, 10, 24, 12, 9, 14, 11, 14, and 21 in the data set range are equal to the highest number minus the lowest value, hence option C is correct.
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What are the two types of adaptations that plants can show?
a.Physical characteristics and life cycle differences.
b. Life cycle differences and color differences.
c. Physical characteristics and different food sources.
d. Physical characteristics and behavioral differences.
Answer:
There are two main types of adaptation: physical and behavioral. Physical adaptations are special body parts that help a plant or animal survive in an environment.
Explanation:
Physical characteristics and life cycle differences.
Measurement of overall change in position.
Answer:
Velocity (Rate of change of position)Velocity is a vector quantity that is defined as the rate of change of position of an object with respect to a frame of reference with respect to time. Velocity is equivalent to the speed of the object along with the direction of motion.Hope this is fine for youAnswer:Displacement
Explanation:Displacement is the change in position of an object. The SI unit for displacement is the meter. Displacement has direction as well as magnitude. Distance traveled is the total length of the path traveled between two positions.
Do jellyfish have eyes
Answer:
it depends on the type of jellyfish.
Explanation:
most jellyfish depend on their nervous system (or as scientists call it, their nervous net) to spot light signal.
box jellyfish are the only type (as far as i know) to be known for having eyes that are visible. I think they have 4 eyes
Have you ever considered air pollution when thinking about someplace you'd like to live, or live currently?
If the air pollution here in Killeen was as bad as in other cities, what would you do? Why do you think the people in those cities don't leave?
Answer:
I would come up with a plan to help decrease pollution and be like: "Ey if you want to live in (insert city) Then we can make this city like that."
Explanation:
5 External adaptation of a bird
1. Which of these is not a favorable outcome predicted as the
result of genetically-modified crops?
A. Some GM plant pollen might spread GM genes
to other nearby plants.
B. Some GM plants might be able to resist pests
without pesticides.
C. Some GM plants might be more nutritious
(perhaps higher vitamin levels) than the
unmodified alternatives.
D. Some GM plants might be able to withstand
extreme weather conditions such as flood or
drought
Answer: A. Some GM plant pollen might spread GM genes to other nearby plants
Explanation: I just finished the video, hope this helps
20. Which part of the meal in this picture is a lipid?
a. Fries
b. Bun
C. Steak
d. Cheese
Answer:
ithink it's steak
Explanation:
... because steak can be Lipid composition in meat and meat products. Meat lipids are mainly composed of triglycerides (correspond to about 95% of meat lipids) and phospholipids, which contain saturated fatty acids, monounsaturated fatty acids (MUFAs), and polyunsaturated fatty acids (PUFAs)...
and lipid is present in meat and in meat product.....
If the offspring of a cross show a 9/16 to 3/16 to 3/16 to 1/16 ratio (9:3:3:1), the
оа
b
aaBb x aabb
aaBb x Aabb
AaBb xaaBB
AaBb x AaBb
C
d
Answer:
it should be,
AaBb × AaBb
Explanation:
where,
RY(round, yellow) and ry( wrinkled,green) which gives RrYy( round, yellow)...which is also called 1st filial generation ( F1)...when Mendel self hybridised the F1 plants he differentiate the plant in 9: 3: 3: 1...which is F2 generation.
Which is the most accurate description of RNA
A. Single stranded nucleic acid with adenine, uracil, guanine and cytosine bases.
B. Double stranded nucleic acid with adenine, thymine, cytosine, and guanine bases
C. Double stranded nucleic acid with guanine, cytosine, adenine, and uracil bases
Describe the responses of a red blood cell in isotonic, hypertonic and hypotonic
solutions.
Answer:
Isotonic: Isotonic solutions are solutions having equal osmotic pressures. Hypotonic: Hypotonic solutions are solutions having lower osmotic pressures. Hypertonic: Hypertonic solutions are solutions having comparatively higher osmotic pressures.
A) Yes,because the amino acid changed.
B) Yes,because every mutation changes the amino acid .
C) No , because the amino acid not change
ASAP
Answer: B
Explanation:
please help me?? 10 points!
Answer:
streak
Explanation:
have a great day!!!
based on the graph, describe what is happening between 4 and 6 seconds.
The object is moving away from the start at a constant speed.
The object is not moving.
The object is returning to the start at a constant speed.
The object is changing speed.
Answer:
The object is not moving.
Explanation:
Answer:
its not moving
Explanation:
CELLS
Question
Answer
1.A cell is "the smallest unit of life".
Explain what that means in your own
words.
2. What does Unicellular mean?
3. What does Multicellular mean?
4. Give 3 examples of different cell types
(look at the pictures)
Answer:
1.its microscopic and it is the building block to every organism
2. unicellular means 1 cell or type of cell
3. Multicellular means multiple cells or types of cells
4. prokaryotic, eukaryotic?
plz help. what does Archaeopteryx prove about modern birds?
Answer:
It appears that Archaeopteryx had the brain structures and inner-ear balance sensors that birds use to control their flight. Archaeopteryx also had a wing feather arrangement like that of modern birds and similarly asymmetrical flight feathers on its wings and tail.
Some fungi and insects benefit each other; the fungi protects the insects from predators and the insects spread spores for the fungi. This is an example of a _______ relationship.
Some fungi and insects benefit each other; the fungi protect the insects from predators and the insects spread spores for the fungi. This is an example of a mutualistic relationship.
What is a Mutualistic relationship?A mutualistic relationship may be defined as a +,+ type of interaction in which both species benefit from the existence of each other. Example includes lichens, mycorrhizae association, coral reefs, etc.
In the question, the Fungi protect the insects from predators and benefit the insects to get survivability, while in return insects spread spores for the fungi and assist them in their reproduction process.
Therefore, both insects and fungi undergo a mutualistic type of relationship through which both species benefit from the existence of each other.
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2. What is the name of the moist "ball" of saliva and food that results from the start of digestion in the mouth?
A. epiglottis
B. Ochyme
C. bolus
D. bile
Identify the key metabolic process for step I and the key metabolic process for step II, and briefly explain how each process promotes movement of carbon through the cycle. For each process, your explanation should focus on the role of energy in the movement of carbon.
The question is incomplete, however, the correct and complete question is attached as an image:
Answer:
The correct answer is -
Step 1 - photosynthesis, promotes the movement of the carbon cycle because the energy in is sunlight
step 2 - cell respiration, promotes the movement of the carbon cycle the energy out for cell respiration is heat.
Explanation:
Step I is the photosynthesis / Calvin cycle and step II is (cellular) respiration / citric acid cycle / Krebs cycle. Both processes have their particular carbon input and output and the role of energy is also specific to the process.
During Photosynthesis CO2 is the input of carbon in the carbon cycle that Uses solar or light energy come from sunlight or ATP molecules come from light reactions and carbon output is Organic molecules such as glucose or sugars.
During (Cellular) Respiration Organic molecules are the carbon input of the carbon cycle that is broken down uses chemical energy and leads to ATP production and CO2 is carbon output in the carbon cycle.
How many kg is a 145-pound woman? 1 pound=0.45 kg
Answer:
65.25kg
Explanation:
im pretty sure it would be 65.25 kg if I did the math right
I need help with this. I have no clue how to do it and it is due soon. Please help me!!!
Answer:
i dont know
Explanation:
Cell Junctions help in moving up a level in the hierarchy of organization of living systems. When cell junctions from, the system goes from the cell level to the _________ level.
I have a cell membrane.
A.Prokaryotic cell
B.Eukaryotic cell
C.Both types of cells.
Answer:
both types of cells have a cell membrane
Answer: C. Both types of cells
The instructions, or 'code', in our DNA is dependent upon the order of the _____ in the DNA
-phosphates
-proteins
-bases
- sugars
Answer:
C. Bases
Explanation:
Deoxyribonucleic acid, commonly known as DNA, is the a type of nucleic acid that serves as the genetic material in living organisms. DNA holds information or instructions needed for the synthesis of useful products like proteins that is responsible for growth, reproduction, and general survival of organisms. Hence, it is referred to as the "BLUEPRINT OF LIFE".
However, in the structure the of the DNA molecule, it contains certain monomeric building blocks called NUCLEOTIDES. These nucleotide bases are of four types namely: Adenine, Thymine, Guanine and Cytosine. It is upon these order of nucleotide bases that instructions, or 'code', in our DNA is dependent upon.
If there are two different creatures, one with hair, one without hair would they still be in the same kingdom?
Answer:
it realy depends what these two animals are like if they are both dogs but on is hairless that yes they would be in the same kingdom but if one is a whale and the other is a spider than no they would not
List 3 Genetic Disorders (Diseases) in which the body makes Antibodies to it's
own "self' cells and mistakes antigens on "normal cells for those of Pathogens.
HINT: Think about what the Greek term for "self defence might be
Answer:
Rheumatoid arthritis
Celiac disease
Graves' disease
Explanation:
These are all categorized as Autoimmune diseases.
What is the significance of studying the history of life to the future of science?
Answer:
Studying the history of science allows you to have a glimpse into both the history of the world and into just how we discovered everything we know about the world
Explanation:
A population of crabs living on a sandy beach exhibits three colors: dark brown, light
brown, and speckled. The genotypes for these colors are BB for dark brown, bb for light
brown, and Bb for speckled. If a dark brown crab were crossed with a light brown crab,
what would be the probable phenotypic ratio of their offspring?
Answer:
100% of the progeny will be speckled
Explanation:
Available data:
Three colors: dark brown, light brown, and speckled.The genotypes for these colors are BB for dark brown, bb for light brown, and Bb for speckled.Cross: dark brown crab with a light brown crab
Parentals) BB x bb
Gametes) B B b b
Punnett square)
B B
b Bb Bb
b Bb Bb
F1) Genotype:
4/4 = 100% of the progeny will be heterozygous for the trait, Bb
Phenotype:
4/4 = 100% of the progeny will be speckled
Explain how diffusion restored homeostasis during the dialysis treatment.
Explain why countercurrent flow met the goals and why parallel flow did not meet the goals.
Answer:
Explanation:
By maintaining amount of ions in the blood.
Countercurrent flow met the goals due to difference in concentration gradient.
Explanation:
Diffusion restored homeostasis during the dialysis treatment because during dialysis, the concentration of ion in the blood is maintained that leads to homeostasis.
Countercurrent flow met the goals because it flows in opposite direction while on the other hand, parallel flow did not meet the goals because it flows in the same direction. For example. the blood flows in one direction and the dialysate flows in the opposite direction. The countercurrent flow of the blood and dialysate increases the concentration gradient between the blood and dialysate. The increased gradient helps to remove more potassium, phosphorus and urea from the blood. If we used parallel flow so less concentration gradient of solutes is present and hence, less potassium, phosphorus and urea are removed from the blood