Answer:
Cell membrane and vacuole
Explanation:
Endocytosis is a process that occur in living cells in which substances are engulf in to the cells through the membrane to form vacuole. This occur when the cell membrane engulf materials into the cell and form vessicles called endosome and it move round the cell where it is digested.
Answer:
c
Explanation:
Court witnesses are asked "to tell the truth, the whole truth, and nothing but the truth." Research shows, however, that eyewitness accounts of crimes often are unreliable because even the most conscientious witnesses misremember details of what they observed. What other factors that might affect the "truth" a court witness presents?
Answer:
Check explanation
Explanation:
The testimony presented by an eyewitness is unreliable for a number of reasons, a few of which are listed below:
1. The witness may give false details about the incident out of fear or pressure.
2. The witness may misidentify a convict and ruin an innocent person's life by putting them in jail.
3. Events are not stored perfectly in one's memory, as research has shown, making eye witness accounts inaccurate.
What evidence is there that the endangered species act is causing harm to species????
Answer:
There is strong and increasing evidence the Endangered Species Act is causing widespread harm to the species it is supposed to protect-to the extent the Act may be doing more harm than good. The Act makes otherwise normal and legal forms of land and resource use illegal, such as farming, home building and cutting timber. The Endangered Species Act’s severe penalties-$100,000 and/or 1 year in jail for harming a single species or even unoccupied habitat that is deemed suitable-turn species in to liabilities. As a result, landowners seek to reduce their liabilities in a number of ways.
Explanation:
thread like structure form body of fungus called....?
Answer:
The answer is Hyphae
Explanation:
The body of fungi is very simple known as mycelium
Answer:
Most fungi grow as thread-like filaments called hyphae. A mass of hyphae make up the body of a fungus, called a mycelium.
HOPE IT HELPS : )
Explanation:
bacteria are organisms that reproduce asexually. asexual reproduction can be an advantage to bacteria if it enables them to:
(a)use more cellular energy to reproduce
(b)grow larger populations more quickly
(c)from populations with more genetic variation
(d)produce more tetrads during reproduction
Anterior lobe of pituitary gland is
Answer:
The anterior lobe makes up about 80% of the pituitary gland. It regulates growth, metabolism, and reproduction through the hormones that it produces.
Explanation:
The production of these hormones is either stimulated or inhibited by chemical messages sent from the hypothalamus to the pituitary.
what is the RNA strand for AATTCGGGGTTT
Answer:
Complementary RNA (cRNA) is a copy of a strand of RNA that will bind to the appropriate region of the original molecule. If the original RNA stand had a base sequence of AUU, for example, the sequence of the cRNA strand would be UAA.
Which best describes homeostasis
Snowshoe hare and Canadian lynx live in the boreal forest of Canada. The snowshoe hare is the main prey species of the Canadian lynx. They usually live 1 to 2 years and have four to six offspring at one time. The Canadian lynx is a large cat, which lives up to 15 years and has one to four cubs each year. In spring when vegetation is plentiful, the hare population increases quickly. When the hare population becomes more numerous, they are easy to track and catch, and the Canadian lynx population increases. The Canadian lynx hunts the snowshoe hare and causes their population numbers to drop over time.
When the hare population increases, it is easier for the lynx to find and take a member of that population. This is an example of a:_______.
a) density-independent factor
b) community factor
c) growth factor
d) density-dependent factor
The correct answer is D) Density-dependent factor
Explanation:
In ecosystems, different factors regulate the population of living beings and preserves the natural equilibrium. These factors are commonly classified in density-independent factors and density-dependent factors based on whether these are related to the density of a population. In the case of predation (animals hunting others), this is considered a density-dependent factor because it increases or decreases depending on the size of a population.
For example, in the case of hares and lynxes, the predation increases as the population of hares increases because this makes it easier for lynxes to hunt on hares. Also, this increases the availability of food for the lynxes. Besides this, this regulates the population of hares by preventing overpopulation. Thus, this situation is an example of a density-dependent factor.
Drag the tiles to the correct boxes to complete the pairs.
Match the components of blood to their functions.
platelets
white blood cells
red blood cells
plasma
providing viscosity to the blood
clotting blood
transporting oxygen
fighting bacteria
Answer:
Platelets- clotting blood
Explanation:
white blood cells - fighting bacteria
red blood cells- transporting oxygen
platelets- clotting blood
plasma- providing viscosity to the blood
Answer:
white blood cells - fighting bacteria
red blood cells- transporting oxygen
platelets- clotting blood
plasma- providing viscosity to the blood
Explanation:
I just completed this on a mastery test and got a 100%
what is the importance of mastication during digestion
Mastication is the process by which food is crushed and ground by teeth. It increases the surface area of foods to allow a more efficient break down by enzymes.
Which tends to increase the size of a population?
O immigration
o lack of food
O competition
O emigration
Answer:
immigration
Explanation:
hope it helps .
Answer:
immigration
Explanation:
Part C Having correctly established the F2 ratio in Part B, now predict the F2 phenotypic ratio of a "dihybrid" cross involving two independently assorting genes, A and W, for this cross. WWWWAAAA x wwwwaaaa The F2 ratio would be: ____ dominant W and dominant A individuals : ____ dominant W and recessive a individuals : ____ recessive w and dominant A individuals : ____ recessive w and recessive a individuals Enter your answer as four numbers separated by colons (example: 9:3:3:1).
Answer:
The F2 ratio would be: 1:0:0:0 dominant W and dominant A individuals : 1:1:0:0 dominant W and recessive a individuals : 1:1:0:0 recessive w and dominant A individuals : 1:1:0:0 recessive w and recessive a individuals
Explanation:
All the progeny resulting from this cross will be of an identical genotype (WWwwAAaa) since the parent genotype is homozygous dominant being crossed with homozygous recessive. The phenotypic ratio in this case is 1:0:0:0, indicating that all offspring express the dominant trait and are carriers of the recessive trait.
Which term describes erosion? C- transport solid materials A.creates small particles B.hardens rock fragments C.transport solid materials D.dissolves rock components
Answer:
c)
i took the test:)
Explanation:
The term describes erosion is "transport solid materials".
What is erosion?The process of removing soil, rock, or dissolved material from one area on the Earth's crust and moving it to another, where it would be deposited, is referred to as erosion.
What is solid?Several of the four basic states of matter is called solid. A solid's molecules are generally tightly packed together and have the smallest kinetic energy.
Therefore, the term describes erosion is "transport solid materials".
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what process can cause water in aquifers to become brackish and unusable for agriculture?
A) volcanic activity
B) eutrophication
C) erosion
D) groundwater infiltration
Answer: Groundwater Infiltration
Explanation:
Groundwater infiltration cause seawater to flow into dried-out aquifers that were used for drinking water. This makes these aquifers unusable for agriculture.
Why is the Calvin cycle considered a dark reaction
Answer:
because it's the part that doesn't need energy from the sun to happen. The Calvin cycle takes place within the stroma of the chloroplast.
Explanation:
Answer:
The Calvin cycle can occur in the absence of light.
The Calvin cycle requires ATP and NADPH.
Explanation: See Above
ATP is the molecule that is used to provide energy necessary to power cellular functions, and as a result, it is often called the "energy currency" in the cell. How might this "energy currency" be saved; meaning, what organic molecule can be produced and later used to provide ATP? And what organic molecule might be considered the paycheck; the molecule that is "cashed" in order to get ATP quickly? Explain both your answers.
Answer:
There isn't a single molecule which is metabolized to produce energy.
Explanation:
Since any organic compounds such as sugars, fats, or proteins may be used. However, the most common one is glucose sugar.
Answer:
What type of energy is stored for later use?
Potential energy is stored energy and the energy of position. Chemical energy is energy stored in the bonds of atoms and molecules. Batteries, biomass, petroleum, natural gas, and coal are examples of chemical energy
Explanation:
Why use needle loop to prepare fungi slide
Answer:
It is a safe and convenient way for preparing fungi slide.
Explanation:
Needle loop is used by the scientists when they want to study the structure of fungi under microscope. There are two reasons for using of needle loop in preparing fungi slide. First, it is the safe way in which the chances of contamination is less and secondly, it is a convenient and easier way to place the fungi on the slide of microscope. The needle loop provides more surface area at which more fungi attached to it and place it to the slide.
Match the membrane structures with their function or characteristics.
14
Membrane Structure
Description
11.
Phosphate heads
--Click to select--
& 00:17:18
12.
Fatty acid tails
|--Click to select--
3.
Membrane proteins
--Click to select-
4.
Cholesterol
--Click to select-
v
5.
Glycoproteins
|--Click to select--
1 --Click to select
Cell identification
Receptors, transporters
Hydrophobic interior of membrane
Hydrophilic surfaces of membrane
Maintains rigidity
Answer:
Cell identification-Glycoproteins
Receptors, transporters-Membrane proteins
Hydrophobic interior of membrane-Fatty acid tails
Maintains rigidity-Cholesterol
Hydrophilic surfaces of membrane-Phosphate heads
The the above matches indicated the phospholipid bi- layer of cells.This set up ensures that the cells control the movements of substances across its walls or membranes.
The structure also ensures fluidity of the cells which ensures insulation during cold weather. it also prevents the cell from being too rigid under certain condition.
Explanation:
4. EXPERIMENT: 3ml of starch solution is placed into two test tubes (#1 and #2). Lugol's solution is
added to tube #1. Benedict's solution is added to tube #2 and the tube is incubated at 37 C degrees
for 30 minutes.
What color is seen in tube #1?
In tube #2?
Explain these results:
Answer:
Tube 1- blue-black colour
Tube 2- blue colour
Explanation:
Lugol's solution was first prepared by a French Physician, Jean Guillaume August Lugol. It was formerly used as a tuberculosis therapy and it consists of iodine and potassium iodide. It is still used as medication for iodine deficiency and also as an antiseptic.
Benedict's solution is used to test for reducing sugars.
Starch is known to react with iodine to form a blue-black starch-iodide complex. Hence, when a solution of Lugol's reagent is added to the starch, a blue-black colouration is observed due to the formation of the starch iodide complex.
Starch does not react with Benedict's solution because the reducing moieties in starch are not free. When starch reacts with Benedict's solution, even at 37°C, the solution remains blue because the starch ahas not been hydrolysed in order to enable reaction with Benedict's solution.
uses of gene cloning in the production of human insulin
Answer:
what's gone cloning tho?
Select all that apply.
Which of the following are functions of stems?
Δ transporting water from the roots to the leaves
Δ transporting water from the leaves to the roots
Δ transporting minerals from the roots to the leaves
Δ transporting minerals from the leaves to the roots
Δ transporting food from the roots to the leaves
Δ support the plant to stay upright
Answer:
-Transporting water from the roots of the leaves .
-Transporting minerals from the roots to the leaves .
-Support the plant to stay upright.
An introduced species that's sometimes harmful to the prairie chicken (native species) is
Answer:
Ring-Necked Pheasants
Explanation:
Ring-Necked Pheasants are known to be nest parasites to the Prairie-Chicken and can disrupt Booming Grounds and Feeding Areas. This puts Prairie-Chickens under the endangered list.
A flask containing 100ml of YNB broth was inoculated with approximately yeast cells. The flask was incubated at 37 degrees Celsius (100rpm). Samples were periodically collected and their absorbance (optical density-OD) was measured:
Using the given data (shown in photo) calculate the doubling time of this microorganism (FIRSTLY, you have to determine the exponential phase!)
Answer:
The time it takes for the yeast population to double is 1 hour.
Explanation:
Convert the OD to an approximation of the number of cells present in the broth. Do this by multiplying the OD value with 3 x 10^7.
The exponential phase of growth for the yeast cells is from
time t = 0 hours to time t = 5 hours
Which describes an atom that has fewer neutrons than protons and more electrons than protons? negative compound positive compound positive ion negative ion
Answer:
Negatively charged ion
Explanation:
Negatively charged ions are called anions and they have more electron than than protons and more protons than nuetrons.
When an atom has fewer neutrons than protons and more electrons than protons, such an atom is said to be an anion. Hence, it is negative ion.
Depending on the number of proton and electron, there are 3 types of atoms:
Neutral atoms in which the proton and electron numbers are balancedCation in which the proton number is more than the electron numberAnion in which the electron number is more than the proton numberIn this case, the atom has more electrons than protons and, therefore, is an anion. The excessive electron makes such atom to be negatively charge.
Therefore, an atom that has fewer neutrons than protons and more electrons than protons is a negative ion.
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Hiking in the snowy woods, you peek inside a cave and encounter a hibernating grizzly bear! Its metabolic rate seems to be very low. What do you predict is the predominant type of reaction occurring in this bear?
Answer and Explanation:
Dormancy is a period in an organism´s biological cycle in which its growth, development, and physic activity gets suspended for a period of time. This causes a drastic reduction in metabolic activity, allowing the organism to conserve its energy. Dormancy is closely related to environmental conditions, and it is considered to be an adaptation mechanism by which organisms respond to extreme conditions.
Hibernation belongs to this dormancy process, in which animals progressively decrease their metabolic rates and their body temperature is held a few degrees over the ambient temperature. During hibernation, all functions are reduced: cardiac rime, respiration, renal function, and etcetera.
Before hibernating, bears eat a huge amount of food because this energy is what will keep them alive while hibernating. This action is known as hyperphagia, and while doing it, bears accumulate fate in their tissues. As these animals need to maintain the energy balance and metabolic health, they make use of these reserves. The nutrients excess will turn into triglycerides, that the animal will use to store in the fatty cells. There are several elements involved in the process, such as sugar, amino acids, glycerol, among others.
The fatty acid catabolism is the predominant reaction that occurring in this bear. Option C is correct.
Hibernation:
In this condition, animals decrease their metabolic rates and their body temperature is increased a few degrees over the ambient temperature. During hibernation, the heart rate, respiration and renal function is reduced.
The bears hibernate in the winter because of the lake of food outside. Hibernation help them to stay alive even in the no food is available for few months.
Before hibernation, bears eat a huge amount of food and store a lot of fat this fat provide a constant supply of energy during hibernation.
Therefore, the fatty acid catabolism, provide the energy during hibernation of bears.
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What is a conservation effort that is being made by humans to benefit the land and oceans?
A) Overusing resources
B) Dumping waste material into rivers
C) Beach renourishment projects to help restore sand
D) Mining activities that cause pollutants to enter the air
A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has codominant alleles M and N. If both children are of blood type M, list all of the possible parental phenotypes
Answer:type A
Explanation:
Possible parental phenotypes could be mother with blood type A Rh positive and MN or MM while the father will have blood type B Rh negative and MN or MM type.
What is blood typing in humans?Blood typing is a method to tell what type of blood group or blood an individual has. Blood typing is done so a person can safely donate hos or her blood or receive a blood transfusion from another person. It is also done to see if a person have a substance called as the Rh factor on the surface of the red blood cells.
Blood typing in humans is an example of codominance and multiple allelism. Blood group A and B are codominant and O is recessive allele. Rh negative is recessive over Rh positive blood group. A third gene for the MN blood group is codominant, in which M and N are codominant.
In the given question, both the children are of blood type M. In this case, M and N are codominant over each. Therefore, the possible parental combinations can be MN × MN or MM × MN.
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somebody help me please
Answer:
1. evolution
2. variation
3. competition
4. natural selection
Explanation:
Classification of organisms into three domains is based on:
A) the presence of a cell wall
B) the number of cells in the organism
C) cellular organization
D) nutritional requirements
Answer:
C
Explanation:
cellular organization is the components that make up the cell and how they are arranged inside it. Each component, called an organelle, performs a specific function that is vital for the cell.
The Bacteria, Archaea, and Eukarya are the three domains of the classification. The cellular basis of the classification of the three domains. Thus, option C is correct.
What is the cellular organization?The cellular organization is the arrangement of the cells that are the smallest unit of the organism. The cells of the body make groups at the hierarchical level and perform a specific function.
The domains are not classified based on the cell wall as the animal and plant cells are grouped in the eukarya together. They are also not organized based on the number of cells as bacteria and Archaea both are single-celled.
The domains are not classified based on the nutritional requirements as the modes of nutrition varies in the eukarya domain itself and not just the two other domains.
Therefore, option C. cellular organization is the basis of domain classification
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An unfertilized egg cell has six chromosomes. After fertilization, how many chromosomes should the zygote have?
Answer:
12 chromosomes, because the basic (haploid) number of chromosomes is 6 (n: 6)
Explanation:
The unfertilized egg contains a basic (haploid) number of chromosomes (n), being in this case 6. In humans, for example, the gamete haploid cells have a basic n content of 23 chromosomes, while in somatic cells this DNA amount is duplicated (2n), being therefore 46 chromosomes that are organized into 22 pairs of autosomal chromosomes and two sex chromosomes (X and Y).