Answer:
false
Explanation:
a chemical substance that organisms require to live is what
Answer:
Nutrients.
Explanation:
Nutrients are the chemical substances required by any organism to meet the basic requirements of life. The nutrient can be either organic or inorganic, but both are important for the organism.
Mass = 10 g Density = Mass/volume Volume of a cube = (side length)3 Now that you have the side length, determine the volume. Then use the density formula to calculate the density of the material. Record your observations by selecting the data table icon. You may use a calculator for this section.
Answer:The mathematical definition of density is the mass divided by the volume. In this case the volume of the cube is 6 x 6 x 6 = 216 cubic centimetres. Dividing a mass of 137.8g by a volume of 216 cubic cm yields a density of 0.6379 grams per cubic cm.
Explanation: your welcome
A breeder crossed two chickens, one is a true-breeding black chicken and the other is a true-breeding yellow chicken. All the resulting F1 chicks are black. Several of these F1 black chicks are crossed with the following results: 43 black, 14 brown, and 19 yellow chicks. What kind of inheritance is this? Friend #1 tells you that the answer is incomplete dominance but Friend #2 tells you that the answer is epistasis. You analyze the problem and realize that neither is right. The problem is a trick problem and there is no answer to it.
Answer:
You analyze the problem and realize that neither is right
Explanation:
All intersections and proportions are attached.
First, let's analyze the crossover that formed the F1 generation. At this crossing, chickens of genuine color were used, which indicates that one of them was h0m0zygous recessive (aa) and h0m0zygous dominant (AA). Thus, the entire offspring would be heterozygous (Aa) and would have the color determined by the dominant gene. In this case, all the offspring are black in color, which indicates that in the parents, the black hen is h0m0zygous dominant (AA), while the white hen is h0m0zygous recessive (aa).
In the cross that generated F2, we can see that within the offspring, the individuals in greater proportion are those who present heterozygosity and therefore have the "Aa" alleles. When incomplete dominance occurs, individuals in F2 who have heterozygosity have an intermediate phenotype between the two h0m0zygous phenotypes. As we can see in the question, in F2, heterozygous union members do not have an intermediate phenotype, but the black placement phenotype, which indicates that this is not a case of incomplete dominance.
This is also not a case of epistasis. This is because epistasis causes a gene to eliminate the expression of another gene, whether on the same chromosome or not. The result of this type of inheritance would be that some chickens had colored coloring, while others had no color at all in F2. As we can see, all chickens have colored coloring.
This indicates that neither student is correct.
Describe the basic functions of animal body systems.
Answer:
The heart pumps blood through the circulatory system, delivering needed materials (glucose, oxygen) and picking up waste (carbon dioxide) from cells all over the body. Organs systems work together to efficiently and effectively provide all body cells with their basic needs to carry out life functions.
The basic functions which are important for the survival of an organism include processes such as homeostasis, nutrient absorption and distribution in body, reproduction, and defense against injury or pathogens.
What are animal body systems?There are usually nine organ systems present in an animal which includes skeletal, muscular, nervous, endocrine (hormonal), digestive, respiratory, circulatory, excretory (urinary), and reproductive system. Each of these systems perform a specific function.
The Skeletal system provides the body structure and is responsible for the movements of different body parts. The muscular system is made up of all the muscles which are present in the body, these help in connecting different body parts to the skeletal system. The nervous system consist of the brain and the spinal cord, this system is responsible for coordinating different functions in the body.
The endocrine system is responsible for secreting hormones which are responsible for the growth and development of body. The digestive system helps in absorbing the energy present in the food and distributing the energy. The circulatory system is responsible for the circulation of gases and different molecules across the body through blood vessels.
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Describe the light reactions of photosynthesis and for both a C3 and C4 plant, trace the path of a CO2 molecule from the point at which it enters a plant to its incorporation in to the glucose molecule. Include leaf anatomy and biochemical pathways in your discussion of each type of plant. Read the question above and create a document in which you develop responses to the question. Evaluate your essay by using the rubric provided. After you review and make the necessary corrections to your essay, submit your assignment when finished.
Answer and Explanation:
Type C3 plants absorb CO2 through the stomata located on the leaves. Upon entering the plant, CO2 will be reduced into smaller molecules, which are simpler sugars and are easier to be metabolized. These sugars are glyceraldehyde-3-phosphate and dihydroxyacetone-phosphate. All of this transformation is done using ATP and NADPH + H + as energy currencies.
Upon entering the plant, CO2 is carboxylized by the enzyme ribulose 1,5-bisphosphate carboxylaseoxygenase, also called Rubisco. It is important to note that C3 plants have a very large variety of leaves, since this group has a very large variety of members such as beans, soybeans, cotton, all woody plants, arros, wheat, most grasses, among others.
C4 plants have some differences in the photosynthesis process. This is because to minimize losses and energy expenditure with photorespiration, which has as one of its functions, the capture of CO2 from the atmosphere, these plants have modified their leaf anatomy. These plants can separate the sheath of the vascular females and the cells of the mesophile (this separation does not exist in C3 plants). This type of plant has a concentration of carbon in the cells of the sheath, this causes RUBISCO to limit its performance only to the CO2 carbylation process and does not participate in photorespiration. We can mention as examples of C4 plants corn, sugarcane, sorghum Euphorbiaceae, among others.
Which method of classification requires that each taxonomic group be monophyletic
Answer:
Cladistics
Explanation:
Cladistics is the most scientific method used to classify organisms that are categorized into distinct groups or 'clades'. The cladistic approach is derived from the studies made by the entomologist Emil Hans Willi Hennig (1913-1976). This methodology is based on the identification of the most recent common ancestor (MCRA), where organisms are classified based on shared traits (i.e., how similar they are). By using this method it is possible to draw a cladogram, i.e, an evolutionary tree that exhibits the ancestral relationships among organisms.
Water has a high surface tension. Some insects can stride across the water due to the combination of their legs and the high surface tension of the water. Which property of water best explains the high surface tension?
Answer:
No lol- it’s cohesion is A property of water that enables the high surface tension. Cohesion is the attraction of water molecules with other water molecules.
Explanation:
I just did it 10 seconds ago
Which of the following is the most complex level of organization in a
multicellular structure?
*
organs
organ systems
tissues
cells
Is there anymore that you can do for your own bone maintenance? What actions would you take? Are you doing a great job of maintaining calcium homeostasis? Why and why not?
Answer:
1. I would go and see an ortheapedician
3.Yes I always make sure I do regular brain exercises.
HOPE THIS HELPED!
What happens when the pH of a biological system gets too low?
O All chemical reactions become faster, because low pH makes reactions occur faster.
O Enzymes may lose their ability to carry out reactions because their shape changes.
O All chemical reactions become slower, because low pH makes reactions occur slower.
O Cells keep functioning normally because cells are not affected by pH changes.
Answer: B) Enzymes may lose their ability to carry out reactions because their shape changes.
Explanation:
The shapes of Enzymes may change when the PH level changes.
Which statement is true regarding enzymes?
Enzymes can only break down molecules, never build molecules.
Enzymes cannot be recycled.
Enzymes are not specific to their substrate.
Enzymes lower the activation energy required in a chemical reaction.
Answer:
its D
Explanation:
Clastic rocks are grouped by the size of the ? they contain.
ANSWER:
rock fragments
Explanation:I did this already in my assignment
What kind of research method is good for letting us see patterns in nature?
cause and effect
comparison
relational
simulation
Answer:
Relational
Explanation:
It's on quizlet.
Answer:
Simulation
Explanation:
Simulation us use to letting us see good pattern in nature because it is a research methodology that project past and future outcomes. It is use the analyse the behavior of present or future new products, a new manufacturing project or the upcoming business activity. It help people to see the patterns in nature these will fall into. It is a computer model that allow the conduction of it's experiments.
Sample Response: No, it does not, because the octet rule says that an atom needs to have eight electrons in its valence shell to be stable. The exceptions are hydrogen and helium, which need only two electrons. This atom has only one electron.
What did you include in your response? Check all that apply.
The octet rule says that atoms need to have eight electrons to be stable, except for hydrogen and helium, which need only two electrons.
This atom has only one electron, so it does not satisfy the octet rule.
Answer: both
Explanation:
G
Which of the following is not an example of an abiotic factor?
a plants
b. air
C temperature
de soil
Please select the best answer from the choices provided
A
Markhand
What’s the answer
Answer:
C
Explanation:
its temperature because it's the best answer
Answer: A
Explanation: abiotic means not living so a not example abiotic factor is a)plants
What happens during cytokinesis? (1 point).
O The cytoplasm becomes solid.
O The cytoplasm falls apart.
O The cytoplasm divides.
O The cytoplasm changes color.
Answer: the cytoplasms divides
Explanation:
The cytoplasm of the cell divides during cytokinesis.
CYTOKINESIS:
Cytokinesis is the process whereby the cytoplasm of a cell divides post mitosis. Cytokinesis occurs in both plant and animal cells after which mitotic division i.e. division of the nucleus might have taken place. Mitosis results in the division of the nucleus of a cell, while cytokinesis separates the cell into two distinct daughter cells. Therefore, the cytoplasm of the cell divides during cytokinesis.Learn more at: https://brainly.com/question/3327479?referrer=searchResults
Is stretching a sign of a growth spurt? Please explain
Answer:
yes it is
Explanation:
when your body grows all of your muscles and bones stretch wich makes you taller
Line graphs that indicate time along the x-axis can be used to predict what would happen to dependent variables in an experiment at a later point in time O only if the existing line shows an upward trend. only if the existing line shows a downward trend. if a new variable was introduced to the experiment. if the experiment continued under the same conditions.
Answer: the answer is D
Explanation:
if the experiment continued under the same conditions
which formed first in the solar system
Answer:
The Sun
Explanation:
The spine normally has several gentle curves when viewed from the side. These curves of the spine work in harmony to keep the body’s center of gravity aligned over the pelvis. The cervical spine has a gentle lordosis (inward curve). The thoracic spine has a gentle kyphosis (outward curve). And the lumbar spine has a gentle lordosis (inward curve) again. Discuss deformities of the spine curvature, types and how they affect the body position. Define some of the surgical procedures that can correct these deficites.
A) Discuss deformities of the spine curvature, types and how they affect the body position.
A normal spine when viewed from the back should run straight down the middle of the back.
Deviation from the normal,when an abnormality of the spine sets in, this natural curvature of the spine gets misaligned or exaggerated in some areas.
There are three (3) main types of spine curvature disorders/deformities which are;
LORDOSIS; Lordosis is also known as Swayback, when someone presents with Lordosis,the spine of the Individual curves/sways significantly inward at the lower back.
Lordosis affects posture through the following ways;
-Appearance of swayback, and the buttocks being/appearing more pronounced.
-Problem with moving certain ways.
- There is a large gap between the person's lower back and the floor when the person lies down on the back especially on a hard surface and this does not change when the person bends forward.
KYPHOSIS; KYPHOSIS yet another spine curvature deformity is characterised by a spine that assumed an abnormally rounded upper back.( This curvature is more then 50 degrees). KYPHOSIS affects posture through the following ways;
-There is obvious bending forward of the head compared to the rest of the body.
-There is also a hump or curve to the upper back of the Individual.
SCOLIOSIS; In Scoliosis, another deformity of the spine curvature.
The Individual that presents with scoliosis have a curve that is sideways and goes to their spine. In scoliosis,the curve is often C shaped or S shaped.
In Scoliosis,there are;
- An uneven shoulder blades with one being higher than the other.
- There is also an uneven waist or hip.
- The Individual leans toward one side.
B) Define some of the surgical procedures that can correct these deficites.
SPINE INSTRUMENTATIONS; This involves using instruments like rods,wire and hooks to attach to the spine inorder to realign the bones of the spine and keep the bones secure.This surgery often follows a spinal fusion.
ARTIFICIAL DISC REPLACEMENT; This is when degenerated discs of the spine are surgically replaced with artificial discs.
KYPHOPLASTY; This involves surgically inserting or placing a balloon inside the affected spine area inorder to stabilize and strengthen it and also to relieve pain.
The Hazard Analysis and Critical Control Point (HACCP) system was developed by
A) NIMH
B)the CDC
C) NASA
D) the FDA
why lemon is sweeter than strawberry ?
how does the waves energy change as the wave amplitude changes
Answer:
The waves energy increases as the wave amplitude changes.
Explanation:
Why do coastal areas have cooler summers than inland areas at the same latitude?
Please help quick, I don't have much longer for my test :(
Answer:
I think it is cooler because the water evaporates and it cools things down.
Explanation:
I learned it last year.
Answer:
because areas nearer to the water have a natural air conditioner from the see
Explanation:
The more inland areas don't have this natural breeze and their are usually some mountain or plateau or something in the way . hope it helps
A disruption of a gene called DYXC1 on chromosome 15 for humans may be related to an increased risk of developing dyslexia. Researchers1 studied the gene in 109 people diagnosed with dyslexia and in a control group of 195 others who had no learning disorder. The DYXC1 break occurred in 10 of those with dyslexia and in 5 of those in the control group. Science News, August 30, 2003, p 131.
Is this an experiment or an observational study? Experiment Observational study
Answer:
This is an observational study.
Explanation:
Here, it can be noted that the researcher does not manipulate the method of intervention; Instead, DYXC1 attenuated breaks in both the diseased and control groups. Therefore, it can be considered as an observational study.
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Hellllllpppppp meeeee
Answer:
how can I help u.........
Water is a
because it is formed
from atoms of two elements
The buildup of pesticides in an organism as you move up the food chain is called
Need help it’s a full in blank question I’d be blessed if someone help me
Answer:
Biomagnification
Explanation:
They are the concentration of toxin(pesticides)in the tissue of tolerant organism at successively higher levels in food chain.
What below is an example of basic science? a microscope a telescope an observatory light through a lens can magnify objects
You are doing an experiment involving antibiotic resistance in your study bacteria. This organism grows well on LB - Miller agar plates. You want to make 50 plates (assuming 25ml/plate) of LB-Miller at 1.5% agar concentration. Twenty-five of these plates will be plain, the other 25 need to contain 50 micrograms/ml of Gentamycin for your resistance experiments. You have a stock solution of Gentamycin at a concentration of 5 mg/ml. How would you go about making your plates
Answer:
See the answer below
Explanation:
The stock solution of Gentamycin has a concentration of 5 mg/ml while each plate needs to contain 50 micrograms/ml of Gentamycin.
5 mg/ml = 5000 micrograms/ml
There is a need to dilute the stock antibiotic solution in order to arrive at 50 micrograms/ml. Using the dilution principle;
m1v1 = m2v2
5000 x 1 = 50 x v2
v2 = 5000/50 = 1000 ml
Hence, in order to prepare 50 micrograms/ml, 1 ml of the stock Gentamycin should be taken and diluted with 999 ml of distilled sterilized water. 1 ml of the diluted Gentamycin will then be added to each agar plate while they are still in the molten form at a warm temperature.
