The outer boundary of cells; controls the entry and exit of substances

Answers

Answer 1

Answer:

your answer is Cell membrane / Plasma membrane


Related Questions


What stores materials that the
cell won't use immediately?

Answers

Vacuole stores water food waste and other materials in the cell

When trying to explain why time travel is or is not possible, Einstein developed


his law of relativity


his theory of realtivity

Answers

his theory of relativity :)

After suffering a stroke, JaneDoe finds that she cannot move her left arm. This would suggest that the stroke caused damage to the ___________________ lobe.

a. right temporal
b. right frontal
c. left occipital
d. left frontal
e. left temporal

Answers

Answer:

Choose D.  left frontal

Explanation:

Not sure but hope it helps.

Explanation:

Answer is Option 'D'. Left frontal

what are real-life (small) examples of smooth er, rough er, RNA, and ribosomes?
I'll give brainliest

Answers

Answer:

preparing a surface of painting

Explanation:

painters spray down the exterior of a house with ribosomes before applying the first coat,so the paint will stick better.

Explanation:

Real life example: ribosomes

A "real life example" would be, a car factory. Car instructions go in (mRNA), car parts put together (amino acid chain) then completed cars leave (proteins)

Name the main energy-
storing products of each
phase of photosynthesis.

Answers

Answer:

Rubisco

Explanation:

what is 99,327 in expanded form

Answers

Answer:

90,000 + 9,000 + 300 + 20 + 7

Explanation:

Expanded form means to set all non-zero digits apart in their respective place value. Therefore:

99,327 = 90,000 + 9,000 + 300 + 20 + 7

90,000 + 9,000 + 300 + 20 + 7 is your answer.

~

Answer:

90,000+9000+300+20+7

why do translocation sometimes reduces the total number of chromosomes

Answers

Answer:

When two nonhomologous chromosomes mutate by exchanging parts, the resulting chromosomal rearrangements are translocations. Here we consider reciprocal translocations, the most common type. A segment from one chromosome is exchanged with a segment from another nonhomologous one, so two translocation chromosomes are generated simultaneously.

Explanation:

Hope it helps.. if yes, plz mark me as brainliest

how many organelles are there in a cell. What are their names and what do they do. I am keeping notes

Answers

Answer:

Nucleus - controls all activities of the cell

Nucleolus (in the middle of the nucleus)

- the synthesis of ribosomes and RNA (ribonucleic acid)

Mitochondria (battery of cell) - oxidise glucose to release energy in the form of ATP ( adenosine triphosphate)

Edoplasmic reticulum

1. Smooth - synthesises lipids

2. Rough- Transport proteins synthesised by ribosomes

Golgi apparatus ( golgi body, or any golgi, is has many names)

- Acts as Centre for processing, packaging and transporting macromolecules such as proteins and carbohydratez

Ribosomes - sites of protein synthesis

Lysosomes- Break down macromolecules such as proteins, lipids etc

Vacuoles - store food substances, site for waste products

Centrioles - form spindle fibres during cell division

Cytoplasm ( the so call empty spaces in the cell)

- place where biochemical reactions occur

Plasma membrane

-control movement of substances in and out of the cell due to its semi permeable characteristics

Ok that's all for animal cells, but for plants cells, there is more

Cloroplast - site for photosynthesis

Cell wall - Maintains the shape of plant call, give support to cells

Enzymes are typically fibrous proteins.

True

False

Answers

I believe the answer to this is “False”

Explanation:

Enzymes are typically globular proteins.

Enzymes are mainly globular proteins - protein molecules where the tertiary structure has given the molecule a generally rounded, ball shape (although perhaps a very squashed ball in some cases). The other type of proteins (fibrous proteins) have long thin structures and are found in tissues like muscle and hair.

What is the rule for making a atom positive/+ion?​

Answers

Answer:

Ions are formed when the number of protons in an atom does not equal the number of electrons. If more protons are present, the ion is positive and is known as a cation; if more electrons are present, the ion is negative and referred to as an anion.

Explanation:

Reflection:
What challenges do you envision that would hinder the progress of a flipped
classroom?

Answers

Answer:

Explanation:

Need to Know. How are you creating a need to know the content that is recorded? Just because I record something, or use a recorded material, does not mean that my students will want to watch, nor see the relevance in watching it.

Engaging Models. One of the best way to create the "need to know" is to use a pedagogical model that demands this. Whether project-based learning (PBL), game-based learning (GBL), Understanding by Design (UbD), or authentic literacy, find an effective model to institute in your classroom.

Technology. What technology do you have to support the flipped classroom? What technology gaps exist that might hinder it? Since the flipped classroom is about recorded video, then obviously students would need the technology to do this.

Reflection. Every time you have students watch a video, just like you would with any instruction

What forms life in rocks and soil,water air and life

Answers

Answer:

archaea, bacteria, actinomycetes, fungi, algae, and protozoa

which pathways can a red blood cell take

Answers

Answer:

Red blood cells are capable of limited aerobic glycolysis through the hexose monophosphate shunt, also called the phosphogluconate pathway or the pentose phosphate shunt.

What does the term "environment" describe?
The air, water, and land where something lives
O The physical space that matter takes up
O How quickly things grow
O The type of nutrients needed in soil

Answers

Answer:

The air, water, and land where something lives

Explanation:

Answer:

The air, water, and land where something lives

Explanation:

Environment is described as the surroundings and/or the conditions in which a living organism lives.

hope this helps! if you have any questions, let me know!

Moosehead Lake in Maine is a beautiful lake, spanning 74,890 acres with a maximum depth of 246 feet. The most sought-after fish to be found in Moosehead Lake are: Landlocked salmon, lake trout, brook trout, and burbot. According to Tim Obrey, a regional fisheries biologist with the Maine Department of Inland Fisheries and Wildlife, the fishing at Moosehead declined from phenomenal to just "really good" during the late 1980s, but has rebounded due to careful management. This table shows the populations of three major fish in Moosehead Lake over a 30 year period. Moosehead Lake was illegally stocked with smallmouth bass in 1970. Fish Populations in Moosehead Lake Year Smallmouth Bass Salmon Lake Trout

Smelts are the primary food source for lake trout and salmon in Moosehead. In the late 1980s, we documented a dramatic increase in the abundance of wild lake trout in Moosehead Lake. Swelling lake trout numbers taxed the forage base and the smelt population took a dive. What would be appropriate action for Wildlife Management to make to correct the problem? Choose ALL that apply.

B) One hundred small, one-hectare size areas should be conserved
C) Native species should be maintained or planted within the greenspace to promote biodiversity.
D) Exotic species should be cultivated and planted to increase biodiversity in the protected greenspace.
E) The majority of the secondary consumers should be removed from the greenspaces to promote an increase in lower levels of the food chain.

(WILL GIVE BRAINLIEST WHOEVER CAN ANSWER RIGHT!!!!!!)

Answers

When one of the trophic web links disappears, it affects the whole chain. In management programs it is important to consider these consequences to keep the whole ecosystem equilibrium. In the exposed situation, Native species should be maintained or planted within the greenspace to promote biodiversity and The majority of the secondary consumers should be removed from the greenspaces to promote an increase in lower levels of the food chain.

--------------------------------------

The trophic chain is the energy transference process that involves different organisms, from autotroph or producers, to the consumers or decomposers.

The disappearance of one link affects the whole system. The direct superior link does not have enough food supply, while the immediately anterior link is beneficiated for not being eaten by its predator. And finally, as this last link will overgrow, it will consume greater quantities of its food, causing a decrease in its anterior link. Top-down control refers to scenarios where superior predators control the structure and dynamic of an ecosystem.

It is necessary and significant to consider these modifications in the whole ecosystem while planning management actions to keep an equilibrium.

In the exposed example we know that the most wanted species are

Landlocked salmon, lake trout → which increased its population size sharply over the last yearsbrook trout, and burbot

Smelts, which are the primary food source for lake trout and salmon, decreased in population size significantly.

Finally we know that smallmouth bass was introduced in 1970.

This information suggests that the decrease in smelts' population is due to the predation of the species by the lake trout, which population increased sharply in size. The change on smelts' population size, might affect the blook trout and salmon populations, that also feed on semelts, and might also affect other species occupying inferior levels.

When implementing a management program, it would be necessary to promote biodiversity by growing native species in greenspaces and ensure their survival and reproductive succes. In the exposed case, it is necessary to preserve smelts' population, so it would be also necessary to remove from these green spaces the secondary consumers -trouts and salmon- that feed on them, to ensure the smelts' population growth and recovery.

--------------------------------------------

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Answer:

The Answer is A, C, and D

Explanation:

Wildlife management reacted to the increase in trout and depletion of smelt by liberalizing bag limits on lake trout and allowing harvest of smaller fish. We also severely reduced the salmon stocking rates. Salmon and trout populations had to be controlled until smelt could rebound.

How is the Nucleus like a brain?

Answers

Answer:

The nucleus contains the DNA of the cell which can be thought of as the brain of the cell.

The nucleus responds to stimuli via receptors which can be primary or secondary. Basically, an external ligand (hormone, protein, nutrient, etc) binds to the surface receptor of a cell, this, in turn, causes the receptor to release a messenger (most of the time circular AMP (cAMP)) which binds to a secondary receptor which is either directly inside the nucleus or on the nuclear envelope. Finally. the portion of the DNA which is responsible for the protein to respond to the ligand is activated and begins transcription.

The activated DNA section (gene) produces mRNA which in turn produces a protein in response to the ligand.

On top of this, the entire cell cycle of rest, growth, and division is controlled by the nucleus.

Thirteen different SSR loci are used by the FBI to perform DNA fingerprinting. If SNP loci were assayed instead to identify individuals, which of the following would be true?
a. Fewer than 13 SNP loci would need to be assayed.
b. Many more than 13 SNP loci would need to be assayed.
c. All SNP loci could be genotyped, just as all SSRS are, by electrophoresis of a PCR product.
d. SNP loci, because they are usually biallelic, cannot be used to identify individuals.
e. Using SNPs instead of SSRs, only carriers of disease alleles could be identified.
f. Using SNPs instead of SSRs, only non-anonymous SNP loci could be assayed.

Answers

Answer:

-

Explanation:

The correct statement is that all SNP loci, like all SSRS, can be genotyped by electrophoresis of a PCR product.

What is DNA fingerprinting?

The technique of identifying a person's DNA traits is called DNA profiling. DNA barcoding is a type of DNA analysis used to identify species rather than specific individuals. The nucleotide sequences of specific areas of human DNA that are particular to each person are utilized in the laboratory procedure known as DNA fingerprinting to ascertain a person's likely identification.

DNA fingerprinting is a method for detecting and analysing individual DNA variations. It is based on polymorphism and variability in DNA sequences. Applications of it include: It is utilized in forensic science to pinpoint potential criminal offenders. to establish family relationships and establish paternity.

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How do moon jellies obtain energy?

Answers

Answer:

Like all true jellies, the moon jelly's tentacles are covered with specialized stinging cells, called cnidocytes. ... They have very little nutritional value, however, so the predators that specialize on them must eat hundreds and hundreds of these jellies in order to maintain their required energy levels. Moon jellies stay close to shore, and they pulse their bell to keep themselves near the surface, with their tentacles pointed down. This ensures they can gather as much food as possible. They gather food when it gets stuck in the mucus along the bottom of the bell.

Hope this helps <3 PMB (plz mark brainliest)

Answer:

While it might be nice to grow the missing part back, doing so takes a lot of energy that simply may not be available. For the moon jelly, it takes less energy to simply rearrange the parts in its gelatinous body into a new symmetrical and hydrodynamically efficient configuration and keep moving along on its journey.

Hope this help you!:)

Lloyd’s lab partner is looking down into a test tube while he heats the contents by using a flame. Which action should Lloyd recommend to his partner if heating must continue?
Wear safety goggles while looking into the opening of the test tube.
Cover the opening of the test tube so that no materials can boil out of it.
Move the test tube so that the opening is pointing away from all students.
Put the test tube in a hot water bath so that no water can enter its opening.

Answers

The correct action that Lloyd should recommend to his partner who was looking down into the test tube if heating must continue would be to move the test tube so that the opening is pointing away from all students.

Wearing safety goggles (and looking directly down at the test tube) might not be enough to protect Lloyd's partner nor other students in case the content of the test tube splashes out.Covering the test tube might hinder any generated gas as a result of heating from escaping safely into the air and this might cause an explosion.Putting the test tube in a hot water bath so that water can enter its opening will definitely affect the reaction and prevent them from getting accurate results/observations.

Hence, the most correct action would be for Lloyd's partner to move the test tube so that the opening is pointing away from all students.

More on laboratory safety practices here: https://brainly.com/question/4820974

Answer:

Move the test tube so that the opening is pointing away from all students.

An analogous structure is one that:
A. comes from a common ancestor, but now has a different function.
B. has exactly a 4 bone type structure, including upper arm, forearm, wrist, and hand/foot.
C. has the same function in multiple organisms but evolved independently each time, without a common
ancestor.
D. no longer serves a function.

Answers

Answer:a

Explanation:a

An analogous structure is one that has the same function in multiple organisms but evolved independently each time, without a common ancestor. The correct option is C.

What are analogous organs?

Analogous organs are those organs that are different in different organisms and have grown in different times and have nothing in common, but they function similarly. The animals are anatomically very different, but some organs have the same functions.

Examples of analogous organs are:

The wings of a bat, a bird, and an insect.The fin of a dolphin and a shark.Sweet potato and potato.

Thus, the correct option is C. has the same function in multiple organisms but evolved independently each time, without a common ancestor.

Learn more about analogous organs, here:

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5 puntos
5. Si el color de ojos negros es dominante (A) sobre el color de ojos azul
(a). El fenotipo y el genotipo que tendríamos al cruzar dos personas
heterocigotas es
*
GENOTIPO: 50% Heterocigotas - 25% homocigotas dominantes - 25% homocigotas
recesivas.FENOTIPO: 75% ojos negros - 25% ojos azules
GENOTIPO: 100% Heterocigotas. FENOTIPO: 100% ojos negros.
GENOTIPO: 50% Heterocigotas - 50% homocigota recesivo. FENOTIPO: 100% ojos
negros.
GENOTIPO: 50% Heterocigotas - 50% homocigotas dominantes FENOTIPO: 50% ojos
negros - 50% ojos azules

Answers

Answer:

GENOTIPO: 50% Heterocigotas - 50% homocigota recesivo. FENOTIPO: 100% ojos

Explanation:

No se de la verdad

The Science of Biology: Question 1: Explain how sunlight is the primary source of energy for your own life? Question 2: In terms of energy, what is the difference between glucose and ATP? Question 3: Explain the role of a hypothesis in a scientific investigation? ( Will Mark Brainliest if correct). ​

Answers

Answer:

cause sunlight is the basic source of energy which is used in our daily life

Explanation:

sunlight is the main source of energy for the earth. without sum nothing is possible . sunlight is relatable in every systematic flow. like wise in photosynthesis, life cyle,drying food or fruits ,etc. moreover!

What enzyme breaks down starch in your saliva?
pepsin
trypsin
lipase
amylase

Answers

Answer:

D

Explanation:

It is the amylase, or rather alpha-amylase

Which variable type is placed on the y-axis of an x, y scatter graph?

Answer:
Dependent

Answers

Answer:

Dependent variable.

Answer:

Dependent

Explanation:

All of these substances are found in the cell membrane except


phospholipids

cholesterol

transport proteins

ribosomes

Answers

Answer:

ribosomes

Explanation:

A cat jumped off a shelf. It has 40 Joules of Mechanical Energy and 16 Joules of Kinetic Energy. What is the Potential Energy? (ENTER THE NUMERICAL VALUE ONLY)

Answers

Answer:

24 Joules

Explanation:

The formula is mechanical energy = kinetic energy + potential energy. So in order to find the potential energy you will need to reverse it.

Mechanical energy- Kinetic energy= Potential energy.

40- 16= 24

Answer: 24 Jolues.

Hope this helps!

How is biotechnology useful for society?

Answers

Answer:

Hope it will help you!

Explanation:

Like all technologies, biotechnology offers the potential of enormous benefit but also potential risks. Biotechnology could help address many global problems, such as climate change, an aging society, food security, energy security and infectious diseases, to name just a few.

Modern biotechnology enables us to combat debilitating and rare diseases, minimize our environmental impact, feed the needy, use less and cleaner energy, and create safer, cleaner, and more efficient industrial manufacturing processes.

Roberto wants to measure the lengths of the sides of a metal cube. Which tool should he use?


Answer: ✔ Ruler


To make a solution, Sian must measure 15.0 mL water. Which tool should she use?


Answer: ✔ graduated cylinder



An experimental procedure calls for 35.9 g sodium chloride and 15.2 g silver nitrate. What tool should be used to measure these substances?


answer: ✔ electronic balance




Mark needs to determine how much the temperature of a solution changes during a chemical reaction. Which tool does he need?


Answer: ✔ thermometer

I was struggling to find the answers for these questions. So decided to put the questions along with the right answers for the people that might need it

feel free to answer if you need the points or if you just want to say something.

this is for Edg 2021

Answers

Answer:

Roberto wants to measure the lengths of the sides of a metal cube. Which tool should he use?

✔ ruler

To make a solution, Sian must measure 15.0 mL water. Which tool should she use?

✔ graduated cylinder

An experimental procedure calls for 35.9 g sodium chloride and 15.2 g silver nitrate. What tool should be used to measure these substances?

✔ electronic balance

Mark needs to determine how much the temperature of a solution changes during a chemical reaction. Which tool does he need?

✔ thermometer

Explanation:

Which of the following is a complementary base pair for DNA?
O Adenine and thymine
Guanine and adenine
O Guanine and uracil
O Cytosine and thymine

Answers

Answer:

Hi, there! The Correct Answer Is Below! :)

O Adenine and thymine

Explanation:

Information to Backup my Answer!

Guanine and cytosine are bonded together by three hydrogen bonds; whereas, adenine and thymine are bonded together by two hydrogen bonds. This is known as complementary base pairing.

___________________________________________________________

-DarkSpirit-

Adenine and thymine
///////////////

w
8. At the surface of a swimming pool a 2.0 L balloon is under 760 mmHg of pressure. If that balloon is taken to the
bottom of the deep end, the pressure is now 950 mmHg. What is the new volume of the balloon?
0.45 L
b. 1.6L
2.4 L
d. 95 L
a.
C.
voru

Answers

The new volume of the balloon is 1.6L

HOW TO CALCULATE THE FINAL VOLUME:

Using Boyle's law, which states that the pressure of a given gas is inversely proportional to its volume i.e PV = K

Boyle's law equation is as follows:

P1V1= P2V2

Where;

P1 = initial pressure (mmHg)P2 = final pressure (mmHg)V1 = initial volume (L)V2 = final volume (L)

According to this question,

P1 = 760mmHg

V1 = 2L

V2 = ?

P2 = 950mmHg

Using P1V1 = P2V2

760 × 2 = 950 × V2

1520 = 950V2

V2 = 1520/950

V2 = 1.6L

Therefore, the new volume of the balloon is 1.6L

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