Answer:
Explanation: this is complicated
The _________ is a large structure that directs the cell's activities.
(please help me)
Answer:
Nucleus
because it's the structure directs all of the cell's activities, including reproduction.
What factors should scientists consider when creating a plan to conserve the species?
Answer:
Educate your family about endangered species in your area.
Recycle and buy sustainable products.
Reduce your water consumption.
Reduce your personal footprint.
Do not buy plastic products.
Pressure your civil servants.
Volunteer your time to protect the wildlife in your area.
Explanation:
A raccoon needs three fish a day to survive. A Fish needs 11 phytoplankton 1 point a day to survive. How much phytoplankton does a raccoon need to survive a day?
Answer:
33
Explanation:
if one fish needs 11, then you multiply 3 by 11, and that gives you 33.
HELP ASAP PLEASE!
Jonathan and Molly performed a similar lab except that in their lab they tested a slurry made from crackers. Their results show that crackers contain both protein and fat. After checking the cracker package, the students were surprised to find that protein and fat are not listed on the nutritional label. No other groups in their class have results that show protein and fat present in the sample. Describe one factor that couldcontribute to their erroneous results:
Answer:
The tubes used in the lab were not thoroughly cleaned out and contains substances with proteins and lipids.
Explanation:
Proteins and lipids are macromolecules and polymers made of monomeric units. In the experiment, the error was due to the reuse of the contaminated test tubes. Thus, option B is correct.
What are proteins and lipids?Proteins and lipids are the major biological molecules that are polymers and made of smaller units (monomers) linked together by various chemical bonds. The proteins are made of amino acids and lipids are made of fats and glycerol.
The errors in the cracker experiment can be due to the presence of contaminated, re-used test tubes that might have residuals left of fats and proteins in them. The contaminants affect the results and interfere with the biochemical tests.
Therefore, option B. the re-used test tubes might have protein and fat contaminants.
Learn more about proteins and lipids, here:
https://brainly.com/question/3266454
#SPJ2
Your question is incomplete, but most probably your full options were, Describe one factor that could contribute to their erroneous results. Which of the following would be considered a source of error in their procedure?
A) The sample cooled down as it sat at room temperature.
B) Test tubes were re-used and may have contained contaminants.
C) Several lab groups conducted the protein test at the same time
D) They used test tubes of a different size than those used by the others.
carry electrical charges at opposite poles.
A . nonpolar bonds
B. polar bonds
C. hydroelectric bonds
D. lonic bonds
Answer:d
Explanation:
Which cross section best represents the valley shape where a rapidly flowing stream is cutting into the bedrock in a mountainous area
Answer:
D. The inverted triangle like
Mixtures will not be represented by a_____
Answer:
symbol/chemical formula
Explanation:
what is property Around a restaurant called
Answer:
I don't understand your question
A population is growing at a rate of 2, 4, 8, 16, 32. Which type of growth does this describe?
Answer:
it is doubling
Explanation:
that is the answer
Answer:
x(2)
Explanation:
It's multiplying by 2
Plz help with the homework
Answer:
The lagging strand contains Okazaki fragments
Explanation:
During DNA replication, the two strands of DNA are separated and replicated via distinct mechanisms.
The leading strand is synthesised continuously by DNA polymerase in the 5'-3' direction.
However, DNA polymerase can only work in one direction (5'-3') so the other strand cannot be synthesised continuously in the reverse direction.
The other strand, the lagging strand, has to be synthesised discontinuously in the 5'-3' direction. This forms fragments- called Okazaki fragments - that are later joined up.
This is much easier to visualize than to explain, check out the video titled "DNA replication - 3D" on Y0utube by yourgenome to see it in action!
Which state is considered the “Mecca” of the natural revolution? AGRICULTURE*
Answer:
Texas
Explanation:
I ADDED EXTRA POINTS FOR A REASON!!!!!!!!!! GIVING BRAINLIEST, ⓉⒽⒶⓃⓀⓈ AND ✰FIVE STARS ✰
how do ferns reproduce?
Ferns produce male and female cones.
Ferns produce spores under its leaves.
Ferns produce egg and sperms cells in the leaves.
Ferns produce flowers that contain egg and sperm cells.
Answer:
The answer is C.
Explanation:
Most ferns reproduce differently, and that involves meiosis and fertilization. When you are thinking of the typical big fern plant, what it does is, by meiosis, produces spores, and spores have half the number of chromosomes of the big parent plant. The spores are released into the wind.
Answer: The correct answer on Ody2020 is: Ferns produce spores under its leaves.
Explanation: Got it right on the assignment.
12. A student has a brand new pencil with a mass of 120g. One week later,
after sharpening it a few times, the pencil becomes shorter and it's mass is now
only 90g. Is this an example of a physical or chemical change?
Where is the other 30g of mass from the pencil? Be specific/give details.
Answer:
Water is a polar molecule because one area is ________________ and another area is ______________________.
Explanation:
Jordan's grandmother uses the juice from squeezed lemons to remove stains from his shirt. He hypothesizes that the juice is the only part of the lemon that is effective at removing the stains, because it’s an acid. Which two steps would help Jordan determine whether his hypothesis is scientifically supported?
He should test the acidity of different parts of the lemon, including the juice, pulp, and skin.
He should conduct an opinion poll of residents to see if they agree with his hypothesis.
He should make identical stains on T-shirts and see whether different parts of the lemon will remove the stain.
He should find literature on housekeeping websites that support the use of lemon juice at removing stains.
He should compare lemon juice with other acidic juices to see if they all remove stains.
Answer:
He should make identical stains on T-shirts and see whether different parts of the lemon will remove the stain
Explanation:
Answer:
To test the validity of this hypothesis he should test the acidity of different parts of the lemon including the juice, pulp and skin of lemon.
and
He should also compare the lemon juice with other juices to know weather other juices are also helpful in removing stains from the t-shirt.
Explanation:
Edmentum/Plato
Plz hurry if u can. What is the momentum of a 100-kg football
player running north at a speed of 4 m/s?
What is NOT true about Pure substances.
O they can be elements or compounds
O they can be homogeneous or heterogeneous
O they are made of only one type of matter
O all of the statements are true
Explain how the method of mark and recapture works to determine population size.
Answer:
A number of members of a population are capture, tagged, and released. At a later time, the sampler returns and captures a set number of members of the population and determines the ratio of tagged to untagged individuals. The ratio of tagged to caught individuals is then approximately equal to the ratio of originally tagged individuals to the total population.
edge 2021
Which of the following conclusions can be made about the sedimentary layers?
(A) bed 2 was deposited after bed 3
(B) bed 1 is the youngest
(C) bed 3 was deposited before bed 1
(D) bed 2 was deposited before bed 3
What does universal solvent mean
Answer:
water
Explanation:
, water is called the "universal solvent" because it dissolves more substances than any other liquid. This is important to every living thing on earth. It means that wherever water goes, either through the ground or through our bodies, it takes along valuable chemicals, minerals, and nutrients.
What are the disadvantages of polygamous in animals
Answer:
The principal disadvantage of monogamy is a lack of variety. Monogamy has the potential to lead to routine, and possibly boredom. People often equate excitement in a relationship with the ability to be with a number of individuals, potentially as part of an open or sometimes polyamorous relationship.
Explanation:
What’s the answer so confused
Answer:
0
Explanation:
1/3 x 21 = 7
1/1 x 12 = 6
7 - 1 = 6
6 - 6 = 0
Type fast if you don’t mind thanks!!
anyone say pls for my friend
needed quick
Answer:
1)a
Explanation:
The diffusion of a substance into or out of a cell requires
Answer:
Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane. Gas exchange in gills and lungs operates by this process. Carbon dioxide is produced by all cells as a result of cellular metabolic processes.
Explanation:
The diffusion of a substance into or out of a cell requires a process called diffusion, by which the molecules pass out through the plasma membrane.
What is diffusion?Diffusion is a key mechanism for material transfer within cells and for the passage of critical tiny molecules across the cell membrane. This process controls the exchange of gases in the gills and lungs. All cells release carbon dioxide as a byproduct of biological metabolism.
There are two processes by which the molecules pass through a semi-permeable membrane. The processes are osmosis and diffusion. When the material transfer from low concentration to higher concentration.
Thus, diffusion is the process by which molecules travel through the plasma membrane to allow material to enter or exit a cell.
To learn more about diffusion, refer to the link:
https://brainly.com/question/24746577
#SPJ6
I will give all my points For who ever answers this
A ball rolls down a ramp. starting from rest. After 4.9 seconds, its velocity is
7 m/s. What is the acceleration of the ball?
Answer:
1.43 m/s/s
Explanation:
[tex]a= \frac{vf-vi}{t}[/tex]
vi=0m/s
Vf=7m/s
t=4.9
[tex]7/4.9=1.4285714285714284[/tex]
or 1.43 m/s/s
Describe 3 main organelle differences between plant and animal cells.
Answer:
chloroplasts, the cell wall, and vacuoles.
Explanation:
HOPE THIS HELPS
A study was created to test the effects of jazz on people’s sleep patterns. The hypothesis of the experiment was that if people listened to jazz music as they fall asleep, they will sleep for longer periods of time. For the experiment, 2 groups of people were created. One group was placed in a quiet room where they went to sleep and they were timed on how long they slept. The other group was placed in a room where jazz music played softly as they began to sleep and played throughout the night. As each group awoke, their sleep times were monitored.
Dependent Variable: ______________________ Control Group: ____________________________
Independent Variable: _____________________ Experimental Group: ________
Answer:
Dependent variable - sleep times
Independent variable - jazz music/silence
Control group - Group 1. The group that was kept in a silent room
Experimental group - Group 2. The group placed in a room with jazz music.
Explanation:
The dependent variable is the actual variable to be measured during an experiment. The value of the dependent variable is dependent on the independent variable supplied. In this case, the dependent variable is the duration of sleep of the different groups.
The independent variable is supplied by the experimenter and is often manipulated to see the effects it will produce on the dependent variable. In this case, the jazz music and the silence in the rooms respectively represent the independent variable.
The control group receives no treatment variable and represents the group that is often used as the benchmark to measure the effects of treatment variables on experimental subjects. In this case, the control group is the group that was placed in a room without jazz music.
The experimental group is the group that receives the treatment variable and in this case, the group that slept in the room filled with jazz music.
Dependent Variable: The dependent variable in this experiment is the sleep duration or the length of time each participant slept.
Control Group: The control group in this experiment is the group of people placed in a quiet room where they went to sleep without any jazz music playing. This group serves as a baseline for comparison to evaluate the effects of jazz music on sleep duration.
Independent Variable: The independent variable in this experiment is the presence or absence of jazz music while falling asleep and throughout the night.
Experimental Group: The experimental group in this experiment is the group of people placed in a room where jazz music played softly as they began to sleep and continued to play throughout the night. This group is exposed to the independent variable (jazz music) to test its effect on sleep duration.
The purpose of this study is to determine if the independent variable (jazz music) has an impact on the dependent variable (sleep duration) by comparing the control group's sleep duration to that of the experimental group.
Learn more about dependent variables, here:
https://brainly.com/question/17034410
#SPJ6
Why might a jogger develop lactic acid in his or her muscles
Answer:
here
Explanation:
the more your body is moving and is pumping blood there is in your muscles which start to produce lactic acid
which is more useful to biologists studying ancestry homologous structures or analogous structures?
You need to find out why the GBR water is inhibiting (stopping) photosynthesis in the algae. The three major parts of photosynthesis are PSI, PSII and the Calvin cycle. The database has provided 3 things that could be inhibiting photosynthesis: high sea temperatures, paraquat, and diuron.
Answer:
Explanation:
The question is not complete below is the remaining part of the question
Justify your choice by writing a hypothesis to explain how it has stopped the algae from making ATP, NADPH and sugars. You will be able to revise your hypothesis as you do more experiments
Explanation:
The hypothesis will be
High sea temperature inhibit Algae growth
Herbicides reduces algae photosynthesis rate
Algae respond to temperature differently some thrive at a low temperature, some at a moderate temperature but when the temperature is very high the rate of photosynthesis will reduce because they can not undergo the normal body physiological function as a result of harsh environment. In green plant at a very high temperature stomata closes to regulate water loss this prevent Carbon dioxide from coming in and photosynthesis rate reduces
Paraquat and Diuron are herbicide that prevent the growth of plants, when they are sprayed Algae is affected they die from immediate action of this chemical and their colour changes since chloroplast the green pigment is where light hit for photosynthesis to occur when the color changes the active site is affected photosynthesis can no longer occur.
Answer:
Diuron
Explanation:
Increasing the temperature only decreases the sugar, not the ATP and NADPH. I predict that Diuron will be inhibiting photosynthesis because photosynthesis as a whole should not work if Photosystem II is interfered with. Also, because Paraquat only lowers NADPH and sugar and not ATP, Diuron is the only choice left.
