Answer: Natural Gas
Explanation:
Electricity and natural gas are the most-used energy sources in homes. Electricity is used in almost all homes, and retail electricity purchases accounted for 43% of total residential sector end-use energy consumption.
cell wall of xylem is rich in
Answer:
lignin
Explanation:
Lignin is a water resisting material i.e., waterproof. So xylem carry water to all plant tissues so xylem cells are under water pressure all times which may collapse the xylem cell so it is coated with lignin to safeguard itself
The trophoblast is mostly responsible for forming the ________
The trophoblast is mostly responsible for forming the placental tissue. The trophoblast is the outer layer of the blastocyst.
What is the trophoblast responsible for forming?Trophoblasts are cells forming the outer layer of a blastocyst, which provides nutrients to the embryo, and develops into a large part of the placenta.
They are formed during the first stage of pregnancy and are the first cells to differentiate from the fertilized egg.
Thus, The trophoblast is mostly responsible for forming the placental tissue.
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Cell theory states all of the following, except
a. all organisms are composed of one or more cells
b. the basic unit of life is the cell
c. all cells arise from pre-existing cells
d. cells can neither be created or destroyed
Answer:
d. cells can neither be created or destroyed
First two statements were given by Schleiden and Schwann and the the third statement was given by Virchow.
explain why a fossil record is not 100% accurate
Answer:
There are gaps in the fossil record because many early forms of life were soft-bodied, which means that they have left few traces behind. What traces there were may have been destroyed by geological activity. This is why scientists cannot be certain about how life began.
Explanation:
Thinking about the number of carbon atoms in glucose and in pyruvic acid, explain why there is one molecule of glucose on the left side of the arrow and two molecules of pyruvic acid on the right side of the arrows
Answer:
Each glucose molecule has 6 C atoms, while each pyruvic acid molecule contains 3 C atoms. As a result, there must be two molecules to hold all six C atoms.
Explanation:
would appreciate some help!
If R = red and r = white in fruit flies, what would
be the result of a cross between a heterozygous
female (red-eyed with one recessive allele) and
a recessive male?
Hint: Draw a Punnett square.
A. 25% red-eyed female, 25% white-eyed female, 25% red-eyed
male, 25% white-eyed male
B. 25% white eyed male, 25% red-eyed male, 50% and red-eyed
female offspring
C. 0% chance of white-eyed flies
Answer:
is it 60%
Explanation:
if this is wrong I'm sorry
Complete this food chain
On Earth, the plants and the oceans store carbon dioxide from the atmosphere. What results when a factor, such as the clear-cutting of large stands of forest, disrupts this process?
global warming
overpopulation
ozone depletion
soil erosion
It would increase the level of carbon dioxide thereby leading to global warming and is denoted as option A.
What is Global warming?
This is defined as an increase in the average air temperatures close to the Earth surface.
This is as a result of collection of carbon dioxide (CO2) and other air pollutants in the atmosphere.
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Evaluate each of the statements below. Select those that accurately describe the role of genes and chromosomes in the process of inheriting a specific trait. Choose all THREE that apply. Question options:
Chromosomes are made of DNA.
There are 26 pairs of chromosomes in humans.
Alleles are the different forms of a gene that can exist.
Chromosomes contain genes that control the inheritance of traits.
Genes are made of chromosomes and contain all of the genetic information for an organism
Forms of the Ras protein found in tumors usually cause which of the following events to occur? excessive cell division decreased cell-to-cell adhesion cell division to cease DNA replication to stop
The Ras protein found in tumors usually cause which of the following events to occur excessive cell division.
How does Ras oncogene contribute to cancer?Ras genes codes for proteins that can drive cancer when mutated.
All Ras proteins are GTPases which work as molecular regulators in the cell, controlling signaling pathways and other interactions.
Thus, option "A" is correct.
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Need help plsss I will give u 100 points
Answer: Mrs.Connor
Explanation:I just want to go with is the flow.
Glucose in the renal tubules encountering luminal epithelia can be absorbed via the ____________ route by passing through the plasma membrane of the absorptive cell.
Answer:
The word is Transcellular.
4.
Which of the following correctly lists the levels in an ecosystem from largest to smallest?
A. ecosystem, community, population
B. community, ecosystem, population
C. population, ecosystem, community
D. ecosystem, population, community
Answer:
A. ecosystem, community, population
Why is evolution so important for understanding biology? Explain your answer in 1-2 sentences.
How could a color mutation affect an organisms life
Answer:
Mutations can affect an organism by changing its physical characteristics (or phenotype) or it can impact the way DNA codes the genetic information (genotype). When mutations occur they can cause termination (death) of an organism or they can be partially lethal.
Match the definition to the term:
fuel made from living things
a) hydroelectric power
b) solar energy
c) nuclear fission
d) biomass fue
What elements are common to all 4 Biomolecules?
1)Carbon, Hydrogen, Phosphorus
2)Carbon, Hydrogen, Oxygen
3)Carbon, Nitrogen, Phosphorus
Answer:
Carbon, Hydrogen, Oxygen
Explanation:
Prokaryotes and eukaryotes
Organisms can be divided into two main groups based on fundamental differences in their cell structure. Animals, plants, fungi, and protists are eukaryotes. Bacteria and archaea are prokaryotes. All prokaryotes are unicellular while eukaryotes may be single-celled or multicellular.
---
Hope this was able to help you! :)
Answer:
Explanation:
The term "prokaryote" refers to single-celled organisms that lack nuclei. The term "eukaryote" refers to organisms that may be single-celled or multicellular, but whose cells are distinguished by nuclei that contain genetic informaiton.
The continuity of life can be exemplified by which of the following?
I. A mother gives birth to a son.
II. A cell divides to replace another cell.
III. A leukocyte engulfs a virus particle.
IV. A strand of DNA is replicated before mitosis.
V. Seeds develop inside of an orange.
A. I and III only
B. I, II, IV, and V only
C. I, II, III, IV, and V
D. I, II, and III only
c
that should be the answer
Which of the following is a limitation of a clinical trial?
• A. Amount of random assignment
• B. Hospital costs
• C. Amount of peer review
• D. Number of test tubes
SUBMIT
Answer:
C. amount of peer review.
Explanation:
The lymphatic system: has a pumping mechanism to move fluid. includes areas of high concentrations of APCs, T and B cells. is the site of B and T cell clonal deletion. collects fluid from around the brain and spinal cord. is very impermeable to extracellular fluid.
The lymphatic system: has a pumping mechanism to move fluid includes:
Includes areas of high concentrations of APCs, T and B cell.Is the site of B and T cell clonal deletion.What are the 6 lymphatic organs?Lymphoid organs are:
Bone marrow. Thymus.Lymph nodesSpleen. Tonsils.Mucous membranes.Thus, option "A and B" is correct, it helps in pumping mechanism to move fluid.
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What change is observed in a distribution curve for a trait affected by directional
selection? (1 point)
o it shifts to the right and to the left.
o it shifts either to the right or to the left.
o it shifts to the right.
o it shifts to the left.
The change that is observed in a distribution curve for a trait affected by directional selection is that it shifts either to the right or to the left, which is the second option.
What is directional selection?Natural selection is process by which heritable traits conferring survival and reproductive advantage to individuals tend to be passed on to succeeding generations and become more frequent in a population.
Natural selection has the following types;
Directional selectionDisruptive selection Stabilizing selectionDirectional selection, is a type of natural selection in which an extreme phenotype is favored over other phenotypes. This causes the allele frequency to shift over time in the direction of that phenotype.
Therefore, the change that is observed in a distribution curve for a trait affected by directional selection is that it shifts either to the right or to the left.
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how many kingdoms of bacteria are ther?
Answer:
The scheme most often used currently divides all living organisms into five kingdoms: Monera (bacteria), Protista, Fungi, Plantae, and Animalia.
Explanation:
In order for complete exclusion from an area to be avoided, ____________ can occur whereby similar sympatric species evolve slightly different ecological niches.
In order for complete exclusion from an area to be avoided, resource partitioning can occur whereby sympatric species evolve in different niches.
What is resource partitioning?The expression 'resource partitioning' makes reference to the use of the same resources (e.g., food) by different species.
Resource partitioning is fundamental for maintaining suitable levels of biodiversity in a given ecosystem.
In conclusion, in order for complete exclusion from an area to be avoided, resource partitioning can occur whereby sympatric species evolve in slightly different niches.
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Which of the following pollutants commonly make their way to bodies of
water via agricultural runoff?
1. Fertilizers
11. Pesticides
III. Eroded soil
Answer: i believe the answer is I and II only
Explanation:
Answer: its i, ii and iii
Explanation:just did it
Atp is important for chaperone protein function. Why would protein import into mitochondria be disrupted if atp were depleted from inside mitochondria?.
Answer:
The protein could slip back out of the mitochondria during transport
Explanation:
The form of a pathogen that enables it to infect a host is called the
Question 2 options:
parasite
None of the answer choices are correct.
pathogen
inoculum
host
Please help! Thank you! :)
Which of the following is NOT a function of the lymphatic system?
a.) carries fat-soluble vitamins to the blood
b.) absorbs protein
c.) collects and returns lost fluid to the circulatory system
d.) traps bacteria
Answer:
Absorbs protein
Explanation:
Explain the important role that your nose plays in your breathing. Help me
Answer:
The nose allows oxygen to come into your body.
The cells are first placed in freshwater by making a wet mount slide of red onion cells. What type of solution environment are you starting with?
The type of solution environment you are starting with is isotonic.
What do you mean by Solution?The solution may be defined as a homogeneous combination of one or more solutes disbanded in any solvent compound.
The isotonic solution may be defined as any solution that contains an equal concentration of solutes on both sides of the membrane. This causes neither the cell to shrink nor to swell.
It overall maintains the same osmotic pressure at a given temperature.
Therefore, the type of solution environment you are starting with is isotonic.
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