Answer:
One advantage of Punnett squares as a model of inheritance is that a Punnett square summarizes how the processes of meiosis and fertilization contribute to inheritance of different alleles of a gene.
Lucy is supposed to write down the lengths of 10 earthworms found near the playground at her school. She measures the earthworms’ lengths in millimeters, but she accidentally labels her data in centimeters.
Which best describes this error in data collection?
The data are inadequate.
The data are false.
The data are recorded incorrectly.
The data cannot be reproduced.
Answer:
The answer is C.)
Explanation:
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i got this correct on my test. edge 2020
:)
2. When diffusion has reached equilibrium, we say that
the net movement of the molecules is zero. Does this
mean these molecules below would stop moving?
Answer:
See Below.
Explanation:
The key word here is net. The net movement has reached zero when a system is in equilibrium but there are still motion's going back and forth due to statistics and just random brownian motion.
Think of it this way, if there are 100 people walking forwards in a crowd but 2 are moving against the crowd, the net movement is still forwards because the bulk of people are going in that direction. However, there are still 2 people moving against.
Same here, if we are talking about a diffusion, let's say in the case of osmosis, if most of the solute is moving across a membrane then we'd say its net direction is that way but that doesn't mean that there aren't processes happening in the other direction. Water molecules in osmosis mostly diffuse, chemically speaking (because you can say this biologically in a different way), from the probability of water molecules colliding with each other and passing the membrane so even if there is a net movement in a certain way their random motion can make them go to the other side just as well. If the fact that motion stops at equilibrium were the case a lot of systems, both chemical and biological, would not exist as we know it.
Think net = bulk NOT total or entire.
When the net movement is Zero at equilibrium ; An insignificant number of molecules are still moving below
When diffusion reaches equilibrium most of the molecules moving from the areas of higher concentration to areas of lower concentration will stop moving, but a negligible number of molecules will continue to move due to random Brownian motion.
When we say the net movement of molecules at equilibrium is zero it is because majority of the molecules have stopped moving and not all the molecules therefore there will be an insignificant movements of molecules still occuring.
Hence we can conclude that When the net movement is Zero at equilibrium ; An insignificant number of molecules are still moving below
.
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The series of steps in which a large fish eats a smaller fish that has eaten algae is a
Answer: It is a food chain
Explanation: A series of steps including species consuming another in a direct chain is defined as a food chain
True or false earth is a single interconnected system :)
Answer:
True.
Explanation:
The earth system is itself an integrated system, but it can be subdivided into four main components, sub-systems or spheres: the geosphere, atmosphere, hydrosphere and biosphere. These components are also systems in their own right and they are tightly interconnected.
100 POINTS!!! Plz describe this (and don't answer this just for the points like actually help me this is 60% of my grade) I couldn't find anything on the website so I came here.
Will reward brainliest.
Answer:
Mitochondria:An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. Also known as the 'powerhouse of the cell.'
Cell wall:A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism.
Nucleus:The positively charged central core of an atom, consisting of protons and neutrons and containing nearly all of the cell's mass.
Golgi bodies:The Golgi apparatus, also known as the Golgi complex, Golgi body, or simply the Golgi, is an organelle found in most eukaryotic cells. Part of the endomembrane system in the cytoplasm, it packages proteins into membrane-bound vesicles inside the cell before the vesicles are sent to their destination.
ER (Endoplasmic Reticulum):A network of sac-like structures and tubes in the cytoplasm (gel-like fluid) of a cell. Proteins and other molecules move through the endoplasmic reticulum. The outer surface of the endoplasmic reticulum can be smooth or rough.
Cell Membrane:The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
Ribosomes:A sphere-shaped structure within the cytoplasm of a cell that is composed of RNA and protein and is the site of protein synthesis. Ribosomes are free in the cytoplasm and often attached to the membrane of the endoplasmic reticulum. Ribosomes link amino acids together in the order specified by the codons of messenger RNA molecules to form polypeptide chains.
Cytoplasm:The cytoplasm provides a medium for the organelles to remain suspended. The cytoplasm acts as a buffer and protects the genetic material of the cell and also the cellular organelles from damage caused due to movement and collision with other cells. Cytoplasm is a thick solution that fills each cell and is enclosed by the cell membrane. It is mainly composed of water, salts, and proteins. In eukaryotic cells, the cytoplasm includes all of the material inside the cell and outside of the nucleus.
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Which of the following processes must occur for a forest ecosystem to recover after a wildlife? a)development b) evolution c)succession d) mutualism
Answer:
c) succession
Explanation:
Succession, in Ecology, refers to the series of changes that occurs to the structure of a biological community. Succession is of two types namely: primary and secondary succession. Primary succession is the colonization of an area for the first time by organisms called PIONEER SPECIES.
Secondary succession involves the recolonization of an area that has already been affected by environmental disturbances like hurricane, earthquake, wildfire etc. The already present SOIL makes it possible for certain organisms to colonize the affected area.
Therefore, succession (specifically secondary succession) is what must occur for a forest ecosystem to recover after a wildlife.
Why would it be bad if Creatine Kinase leaked out of muscle cells?
Answer:
Because it would mean severe muscle damage.
Explanation:
PLEAE HELP ME ASAP!! I need help
Answer:
3
i think
Explanation:
what things humans do in the flower garden to alter the abiotic elements of the ecosystem?
Describe the term "semi-permeable" (or "selectively-permeable) membrane. Why is it important? (giving brainliest to the first person lol)
Answer:
Cells need a selectively permeable barrier sometimes called a semi-permeable membrane because some items need to be allowed to come in while others need to be let out of the cell.
Explanation:
Semi-permeable membranes allow the cell to keep a isotonic state. The amount of water is the same inside as outside the cell.
Describe the steps of Meiosis I and Meiosis II.
Answer:
Hello
Explanation:
Overview of the Stages of Meiosis
Interphase. There are two stages or phases of meiosis: meiosis I and meiosis II. Before a dividing cell enters meiosis,...
Prophase I. Chromosomes condense and attach to the nuclear envelope. Synapsis occurs (a pair of homologous chromosomes...
Metaphase I. Tetrads align at the metaphase plate. Note that the centromeres of homologous...
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What is the elephant getting when the bond is broken in sucrose?
Answer:
Energy
Explanation:
The elephant is getting energy when the bond is broken into sucrose because as sucrose is broken down, it is hydrolized by enzymes sucrase which break the glycosidic bond and convert it to glucose and fructose in the upper gastrointestinal tracts. Glucose and fructose are then absorbed into the blood stream which glucose serve as energy source or stored as glycogen in the gastrointestinal tracts.
WILL GIVE BRAINLIEST! :) How do chlorofluorocarbons affect Earth's ozone layer?
Answer:
Once in the atmosphere, CFCs drift slowly upward to the stratosphere, where they are broken up by ultraviolet radiation, releasing chlorine atoms, which are able to destroy ozone molecules. ... When sunlight returns in the spring, the chlorine begins to destroy ozone.
If a cell is not ready to divide, it may "take a break" and enter the __________ Phase.
Answer:
The stage where it "takes a break" is called the interphase
Explanation:Trust me
What kind of rays are produced when a metal, such as tungsten, is bombarded with
electrons moving with very high velocities?
a. x-rays
b. gamma rays
c. cathode rays
d. infrared rays
Answer: x-rays
Explanation: When the electrons from the filament strike the tungsten target, x-rays are created photons are created if they either hit a target nucleus directly (rare) or their path takes them close to the nucleus. If a high- speed electron hits the nucleus of a target atom, all its kinetic energy is transformed into a single x-ray photon.
Answer:
X-rays
Explanation:
Most fields that are irrigated year after year will eventually build up salt in the soil as water regularly evaporates and leaves some salt behind. One way farmers minimize this salt build up is to flood their fields every few years before planting. This flood water leaches out the salt in the soil. What advantages and disadvantages do you see in this approach?
Answer:
An advantage is that the salt will be washed out and a disadvantage is that it still leaves some salt behind
Explanation:
Irrigation is an agriculture practice which includes watering the cropland, this practice is advantageous as it washes the salt out of the soil however, some amount of salt still remains which affect the concentration of salts in soil.
What is irrigation?
Irrigation is the agricultural process which includes applying the controlled amounts of water to the land to assist the production of crops, as well as to grow the landscape plants and lawns in the agriculture lands. It may be known as watering in lawns. Agriculture which does not need irrigation but relies only up on the direct rainfall is referred to as rain-fed agriculture.
An advantage of the approach used in this case is that the salt will be washed out of the soil and a disadvantage of this approach is that it still leaves some salt behind in the soil which decreases the diffusion of water through roots due to increase in concentration of soil.
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As lactose approaches the active site of lactase, as shown in the image, which of the following occurs first?
The lactose molecule is broken into glucose and galactose.
Lactase shifts to its lowest free energy level to allow lactose to enter the active site.
Lactose creates a microenvironment as it approaches lactase to promote binding.
Temporary bonding occurs between the active site and the substrate, causing a conformational change.
Answer:
There is no image attachment, however, this question can be answered based on general understanding of enzymes. The answer is:
Temporary bonding occurs between the active site and the substrate, causing a conformational change.
Explanation:
Enzymes are proteinous molecules that acts as catalyst in biochemical reactions by speeding up the rate of reactions. According to this question, lactase is an enzyme that acts on lactose sugar and breaks it down into its monomeric unit (glucose and galactose).
All enzymes possess an active site, with which they bind to their substrate. In this question, the lactose (substrate) approaches the active site of lactase (enzyme), what occurs first is that a temporary bonding occurs between the active site and the substrate, causing a conformational change in the shape of the enzyme.
Which statement describes a histogram?
A.It shows a line of best fit
B.It shows how an independent variable affects a dependent variable.
c.It shows a frequency distribution
D.It shows data as a proportion of a whole
Answer:
c
Explanation:
is 4.62... rational or irrational
Answer: Yes 4.62 is very well a rational number.
Do offspring receive Chromosomes from their parent? explain
Answer:
Yes
Explanation:
Your “genes”, or genetics, are what make you who you are. Chromosomes determine what gender a person is and what they’re like (birth defects).
help me I will give anyone who answers it brainiest
What organic substance are both of
these enzymes
digesting?
Answer:
Amylase breaks: down starches and carbohydrates into sugars.
Protease breaks: down proteins into amino acids.
Explanation:
Describe a car’s velocity as it goes around a track at a
constant speed.
Answer:
If the car is going at a constant speed then the velocity isn't changing, only the direction of velocity.
All of the following are nitrogenous bases of DNA, EXCEPT -
guanine.
adenine.
uracil.
thymine.
Answer:
adenine
Explanation:
Answer:
uracil
Explanation:
The 4 bases of DNA are adenine, guanine, thymine and cytosine.
What are "Chloroplasts"?
a.an organelle of some eukaryotic cells in which photosynthesis occurs, using the energy of light to make organic compounds from carbon dioxide and water
b.the substance inside a cell, prokaryotic or eukaryotic, including organelles, but
not including the nucleus of a eukaryotic cell
c.membrane-bound organelles in eukaryotic cells in which cellular respiration
takes place, using oxygen to break down glucose to carbon dioxide and water
d.a cell organelle that is essential to cell functions including reproduction, contains
the cell's chromosomes, and is enclosed by a membrane
Answer:
cloraplast is what makes the plant green
What is an essential nutrient?
Answer:
Substance that must be obtained from the diet because the body cannot make it in sufficient quantity to meet its needs.
Explanation:
Answer:
Essential nutrient: Substance that must be obtained from the diet because the body cannot make it in sufficient quantity to meet its needs.
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A characteristic used to describe a biome is often its distance north or south of the equator . This distance is the ________ of the biome. a. longitude Ob. climate Oc. latitude d. altitude
Nutrition involves those activities by which organisms
Answer:
-Obtain and process materials needed for other activities.
Which word best describes the term vaccinate?
heal
cure
prevent
promote
Answer:
Prevent.
Explanation:
11 12 13 14 15 16 17 18 19 20 Time Remaining 11:39 A restaurant advertises that it is environmentally friendly. It describes the solar panels it uses to generate electricity and the locally grown produce it serves. All the meals it offers are prepared over an open wood fire. Food is served on recycled copper plates, and drinks are served in recycled aluminum cups. Which correctly lists three renewable resources used by the restaurant?
Answer:
Sunlight, grown produce, and wood
Explanation:
The three renewable resources used by the restaurant are sunlight, grown produce, and wood.
Renewable resources are those resources that are naturally or otherwise replenished within a certain time period. The solar panels used to generate electricity makes use of the renewable energy of the sun. In the same vein, the grown produce and the wood used in preparing food by the restaurant are from plant biomass. The biomass is derived indirectly from the sun as well.
All other materials resources used by the restaurant are not renewable but might be recyclable.
Answer: C
Explanation: They are all Renewable resources
Aerobic respiration takes place in the mitochondria because?
Answer:
Glycolysis takes place in the (g)cytoplasm. Two molecules of ATP and two molecules of (h)NADH are formed for every glucose molecules that is broken down. (i) Aerobic respiration takes place in the (j) mitochondria. It is aerobic because the process requires (k)oxygen.
Explanation:
Answer:
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions.
Explanation: