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Related Questions
Describe each group’s role in the food web:
Producers:
Herbivores:
Carnivores:
Omnivores:
Detritivores:
Decomposers:
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2) only eat fruits and veg e.g. giraffes etc
3) only eats meat e.g. wolves etc
4)eat vegetables, fruits and meat e.g. humans etc
5) an animal that lives off of eating detritus (waste, debris) e.g. earthworms, maggots etc
6) an organism that breaks down organic material e.g. bacteria, fungi etc.
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Answer:
I think its b but I'm not sure
don't hate me if I'm wrong
Which DNA-containing central cell structure found in plant and animal cells is absent in bacterial cells?
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The DNA-containing central cell structure found in plant and animal cells is absent in bacterial cells is nucleus.
What is nucleus?The part of a cell that houses the chromosomes in biology. The membrane-enclosed nucleus is where RNA is synthesised from the chromosomal DNA.
DNA is organised into chromosomes in the nucleus, which is located in the centre of the cell.
The double nuclear membrane (outer and inner) that separates the nucleus from the cytoplasm, known as the nuclear envelope, envelops it. The rough endoplasmic reticulum and the outer membrane are one unit.
The nucleolus' main job is to facilitate ribosome biogenesis by assembling and digesting rRNA into preribosomal particles.
Bacterial cells lack the nucleus, the primary cell structure that houses DNA, that is present in plant and animal cells.
Thus, nucleus is only present is eukaryotic cells.
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The various enzymes in our body are _____.
carbohydrates
lipids
nucleic acids
proteins
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state the shape of the bacterium used in the investigation of preventing bacterial growth
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Answer:
Bacterial cells come in different shapes: from rods, to spheres, to spirals
Explanation:
Moles and freckles are similar in that they are both:
skin abnormalities
growths
caused by an even distribution of melanin
caused by an uneven distribution of melanin
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Answer:
I believe that the answer would be skin abnormalities.
Explanation:
Growths do not apply.
Melanin applies mainly to freckles.
The difference between a monohybrid cross and a dihybrid cross is that _
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Answer:
A monohybrid cross is defined as the cross happening in the F1 generation offspring of parents differing in one trait only. A dihybrid cross is a cross happens F1 generation offspring of differing in two traits.
Explanation:
This is correct.
Which of the following are carcinogens that can possibly cause cancer?
(Choose all that apply)
A. alcohol use
B. asbestos
C. UV radiation from sunlight
D. tobacco use (both smoking and chewing tobacco)
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Answer:
all of them apply
A, B, C, and D
Answer:
All of the above can cause cancer in humans.
Explanation:
Heavy alcohol use can lead to liver cancer.
Asbestos can cause cancerous mesothelioma in the lungs.
Overexposure to UV rays in sunlight can cause skin cancer.
Smoking can cause lung cancer and chewing tobacco can cause oral cancer.
Recall that an ecosystem includes living things AND the non-living environment.
Which of these are examples of non-living parts of the ecosystem pictured?
A sunlight, rocks, water, rotting log
B soil, insects, tree, mushrooms
C fish, frogs, snails, birds
D algae, protozoans, bacteria, plankton
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A would be the answer then
sunlight certainly isn’t alive
In an experiment, scientists blocked the stoma of the first of two otherwise similar plants, resulting in ____
of the altered plant's respiration of water and carbon dioxide.
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Answer:
altered growing
Explanation:
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a _____ mutation in which just one base of DNA is changed is called a(n)
mutation
O translocation
O point
O chromosomal
O inversion
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Answer:
a point mutation
Explanation:
A point mutation or substitution is a genetic mutation where a single nucleotide base is changed, inserted or deleted from a DNA or RNA sequence of an organism's genome.
DNA _____________________ after transcription.
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Answer:
after Transcription DNA is copied into a new molecule of messenger RNA. DNA safely and stably stores genetic material in the nuclei of cells as a reference, or template.
Explanation: happy to help :)
What can be used to illustrate evolutionary classification, or cladistic analysis
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___________________________ are bodily structures that are similar in structure, but different in function, due to sharing a common ancestor
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Answer:
Homologous structure
Explanation:
Have a great day
One of the differences between embryonic stem cells and adult stem cells is ?
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Answer:
One major difference between adult and embryonic stem cells is their different abilities in the number and type of differentiated cell types they can become. Embryonic stem cells can become all cell types of the body because they are pluripotent.
Which statement best describes how homologous chromosomes are
separated during meiosis I?
A. The sister chromatids of each chromosome separate into different daughter
cells.
B. The two homologous chromosomes are not separated during meiosis I.
C. The two homologous chromosomes travel together into one new daughter cell.
D. The nonsister chromatids of each homologous pairs separate into different
daughter cells.
The two homologous chromosomes separate into two different daughter cells.
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Answer:
two homologous chromosomes travel together into one new daughter cell.
Explanation:
in metaphase I the tetrads line themselves up at the metaphase plate and homologous pairs orient themselves randomly. in anaphase I centromeres break down and homologous chromosomes separate. in telophase I chromosomes move to opposite pols; during cytokinesis the cell separates into haploid cells.
The smallest living things we have around, thanks to this tool they were eventually found – What is it?
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Which item in the photo is a good thermal insulator, and why?
A. The plastic handle, because its electrons dont move freely
O B. Human skin, because it is made up mostly of water
C. The metal pan, because its electrons move quite freely
D. The cut vegetables, because they contain a lot of water
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Answer:
free electrons can go through the material such as they are most through loses send the water inside the vegetables of human skin is not very good inspiration because its water if you had to take a warm shower and then come out you feel very cold
Is the mass–kinetic energy relationship directly proportional (as one variable increases, the other increases) or inversely proportional (as one variable increases, the other decreases)?
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Answer:
The kinetic energy of a moving object is directly proportional to its mass and directly proportional to the square of its velocity.
Explanation:
The mass-kinetic energy relationship is ; Directly proportional
The Kinetic energy of an object is directly proportional because an increase in the kinetic energy of a moving object leads to an increase in the mass of the object and also to the increase in the velocity of the object squared.
i.e. K.E ( kinetic energy ) = [tex]\frac{1}{2} mv^2[/tex]
Hence we can conclude that the mass-kinetic energy relationship is directly proportional.
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So long ago they used a sundial to tell it. It starts with a “t” if you want me to spell it – what is it?
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Answer: time
Explanation:
one of the seed banks has been storing seeds of a rare and endangered plant to keep the seeds fresh.120 of the seeds of this plant were selected to be grown out of this 120 seeds only 90 germinated
what percentage of the seeds was not fertile?show all your working
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Answer:
25%
Explanation:
According to this question, a seek stored seeds of a rare and endangered plant. In order to ensure that the seeds remain fresh, 120 seeds are selected to be grown. However, out of these 120 seeds, only 90 germinated. This means that only 90 of 120 seeds are fertile.
This further means that (120-90) = 30 seeds are infertile and hence, could not germinate. In percentage, this can be represented as:
30/120 × 100
= 1/4 × 100
= 100/4
= 25% of the selected seeds are infertile.
describe the role of insulin in regulating blood sugar levels
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Answer:
Insulin helps control blood glucose levels by signaling the liver + muscle fat cells to take glucose from the blood. It then helps the cells to take the glucose to be use for energy, and if the body has sufficient energy, insulin signals the liver to take up glucose and store it as glycogen.
write two sources of each of Nitrogen Phosphorus and potassium required for the growth of plant
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Answer:
Do Nitrogen, Phosphorus, and Potassium Fertilizers Do for Plants? Nitrogen in Fertilizer. In simple terms, nitrogen promotes plant growth. It is associated with leafy, vegetative growth. Phosphorus in Fertilizer. Phosphorus is involved in the metabolic processes responsible for transferring Each of these fundamental nutrients plays a key role in plant nutrition. Nitrogen is considered to be the most important nutrient, and plants absorb more nitrogen than any other element. Nitrogen is essential to in making sure plants are healthy as they develop and nutritious to eat after they’re harvested. Soil is a major source of nutrients needed by plants for growth. The three main nutrients are nitrogen (N), phosphorus (P) and potassium (K). Together they make up the trio known as NPK. Other important nutrients are calcium, magnesium and sulfur.
Explanation: hope im right
Minerals like feldspar and mica are the main suppliers of potassium in soil. The earth provides phosphorus to plants. Usually in the form of synthetic fertilizer or livestock dung, farmers apply phosphorus to soil. The primary source of nitrogen in atmospheric deposition is the combustion of fossil fuels like coal and oil.
What is fertilizer?Fertilizer, a natural or synthetic substance with chemical components that enhance plant growth and productivity.
The primary sources of potassium in soil are minerals like feldspar and mica. Plants receive phosphorus from the ground.
Farmers add phosphorus to soil, typically in the form of synthetic fertilizer or livestock manure. The burning of fossil fuels like coal and oil is the main cause of nitrogen in the atmosphere.
Plants can take up nitrogen from the soil as [tex]NH^4^+[/tex] and [tex]NO_3[/tex] ions, but most of it is taken up as nitrate due to how common nitrification is in agricultural soils. As plant roots take up water, nitrate readily travels in their direction.
Thus, these are the sources of each of Nitrogen Phosphorus and potassium required for the growth of plant.
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what is gene flow and how might it impact a wolf population
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Answer:
Gene flow within a population can increase the genetic variation of the population, whereas gene flow between genetically distant populations can reduce the genetic difference between the populations.
Explanation:
Gene flow within the population increases the genetic variability in the wolf population variation can be seen.
What is gene flow?Gene migration is another name for gene movement. The movement of genetic material from one group to another is referred to as gene flow.
Through migration, gene flow can occur between two populations of the same species and is mediated via vertical gene transmission from parent to offspring and reproduction.
Any movement of people and the genetic material they carry from one community to another is referred to as gene flow, often known as migration.
Therefore the movement of genetic material from one population to another is known as gene flow.
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Describe how you would use Random Sampling to determine the population of dandelions in your yard.
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Answer:
randomly select different areas to count the dandelions, average the numbers and then multiply by the number of plots your grid contains. 6. In a forest that measures 5 miles by 5 miles, a sample was taken to count the number of silver maple trees in the forest.
Random sampling is used in sampling biological products. It is made up of subsets from the larger population in which the subset of individuals is selected randomly with equal probability.
It is used to collect the data for your research work.For sampling the dandelions randomly we will first choose a distinct random area for computing the dandelion.Estimate the average of the numbers determined before.Now multiply the average with the design your framework contains or with the total number of squares in the yard.Therefore this is how you calculate the random sample size.
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I NEEEDDD HELP PLEASE
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Answer:
the second answer choice
25% red, 50% pink, and 25% white
Explanation:
construct a punnett square with the genotype RW and cross them to get genotypes of RR, RW, RW, and WW.
RR is red and occurs once so that is a 25% chance (1/4)
RW is pink and it occurs twice so that is 50% (2/4)
WW is white which occurs once and it is another 25% (1/4)
A red flowered Snapdragon(RR) is crossed to white flowered Snapdragon(rr). The F1 individuals are Pink flowered(Rr). When F1 individuals are self crossed, in the F2 generation, 1 plant with red flowers(RR-25%), 2 plants with pink flowers(Rr-50%), 1 plant is with white flowers(rr-25%) are formed. The phenotypic ratio is 1:2:1 and genotypic ration is 1:2:1.
So, the correct option is ‘25%’.
Need help will give brainliest
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Answer: 1. The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone.
2. The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands.
3. The deeper subcutaneous tissue (hypodermis) is made of fat and connective tissue.
Explanation: Hope this was helpful! :)
10 points
41
Which statement best describes how a vaccination can help protect
the body against disease?
Vaccines directly kill the pathogen that causes the disease,
Vaccines act as a medicine that cures the disease
Vaccines cause the production of specific molecules that will react with and destroy
certain molecules
Vaccines contain white blood cells that engulf harmful germs and prevent them from
spreadin throughout the bodyg
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vaccines cause the production of specific molecules that will react with and destroy
Draw a Punnett square to represent the cross of two pea plants each hetrozygous for tallness(Tt). Use the Punnett square to identify the probability of an offspring that is short.
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Answer:
25% of the offspring will be short, tt.
Explanation:
Due to technical problems, you will find the complete explanation in the attached file
I need help with this one.
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Answer:
Here is ya answer C: Cells
Explanation: