When testing the effect of penicillin on the growth of E. coli, penicillin would be considered the? A.independent variable B. dependent variable C. constant

Answers

Answer 1
A. It’s the thing you change and you’ll measure the E. coli growth

Related Questions

Some researchers argue that the robust australopiths should be classified in a separate genus. What is that genus called

Answers

Answer: Researchers argue that robust Australopithecines should be classified in a separate genus called Paranthropus.

Explanation:  The "robust" australopiths are a group of fossil hominins that existed in East and southern Africa between approximately 2.5 and 1.4 million years ago (Ma). They are referred to here as members of the genus Paranthropus, though considerable disagreement about their proper taxonomy persists. (credit to the internet)

a section of a dna molecule that controls the thumb is called a

Answers

Answer:

gene

Explanation:

do liver cells undergo meiosis?​

Answers

Answer:

In liver development, most Mono hepatocytes undergo the conventional cell cycle to replicate. However, some of them undergo mitosis without cytokinesis to produce Bi hepatocytes.

Explanation:

A place where animals and plants are protected is called

A) an ecosystem
B) a refuge
C) a sanctuary
D) both B and C

Hello! can someone help me w this pls

Answers

A place where animals and plants are protected is an ecosystem

Identify the organelles in the cell to the right.
А
חד
F
В.
А
B
С
с
C
D
E
F
E
DONE
D
plant cell

Answers

Answer:

A- Vacuole  

B- Chloroplast  

C- Cell membrane

D- Golgi bodies

E- Smooth and rough endoplasmic reticulum  

F- Cell wall

Explanation:

This is a structure of a plant cell which unlike animal cell has a cell wall as well as plasma membrane. It also contains large vacuoles present in the center of the cell. The green color of the plants is due to the presence of chlorophyll which is present in an organelles called chloroplast.

Organelles which are labelled in the cell are

A:Cell membrane

B:Vacuole

C:Nucleus

D:Cytoplasm

E:Chloroplast

F:Cell wall

The given figure represents a plant cell. So, the correct option is C.

What is Plant cell?

Plant cells are defined as eukaryotic cells that contain a true nucleus as well as specialized structures known as organelles that perform certain specialized functions. Plant and animal cells both contain a nucleus with similar organelles but plant cells differ due to the presence of a cell wall outside the cell membrane.

In the given figure, labelled organelles function are as follows:

Vacuole stores food, extra water, and waste while cell membrane permits selective passage of things into and out of the cell. The cell's nucleus serves as the activity's control centre, while the cytoplasm is the fluid that gives the cell its jelly-like consistency. Chloroplasts contain a substance called chlorophyll that is a green pigment that aids in photosynthesis. The cell wall of a plant gives it form, stiffness, strength, and protection.

Thus, the given figure represents a plant cell. So, the correct option is C.

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Your question is incomplete, most probably the complete question is:

Identify  the organelles in the cell to the right and label the parts A, B, C, D, E and F.

A.

A:Cell membrane

B:Vacuole

C:Nucleus

D:Chloroplast

E:Cytoplasm

F:Cell wall

B

A:Cell membrane

B:Vacuole

C:Nucleus

D:Cytoplasm

E:Chloroplast

F:Cell wall

C

A:Cell membrane

B:Nucleus

C:Cytoplasm

D:Vacuole

E:Chloroplast

F:Cell wall

D

A:Cell wall

B:Cell membrane

C:Nucleus

D:Cytoplasm

E:Chloroplast

F:Vacuole

What is a fishing bed

Answers

A fishing bed is an underwater solid surface on which fish spawn to reproduce themselves

Is it True or false?

Answers

False, plant cells have cell walls while animal cells do not. Both however, have cell membranes.

Where does the CO2 produced during the Krebs Cycle come from

Answers

Answer:

Uhhh the answer is in the explanation

Explanation:

The citric acid cycle, shown in —also known as the tricarboxylic acid cycle (TCA cycle) or the Krebs cycle—is a series of chemical reactions used by all aerobic organisms to generate energy through the oxidation of acetate—derived from carbohydrates, fats, and proteins—into carbon dioxide.

Why is it important that mitosis occurs like this

Answers

Answer: The cell divides upon these processes during a process known as mitosis. In mitosis, two daughter cells are formed. It is important that each of the daughter cells contain genetic information that is identical to that of the mother cell, as well as that there be no mutations. Mitosis is Important for three main things:

> Growth

> Repair

> Reproduction

hope it helps.

To be honest i didn't get your question but i gave the basic info for Mitosis

Please pick me for Brainliest

Explanation:

How many pairs of spinal nerves are there in the human body?

Answers

Answer:

31 pairs is correct

Explanation:

In the human body there are 31 pairs of spinal nerves, one on each side of the vertebral column.

How can slime molds be both unicellular and multicellular?

Answers

you look like a daniela

The mutation shown in the sequence below can be categorized as which type?

Original DNA sequence:

A T A C G G T A G C A A
T A T G C C A T C G T T
Mutated DNA sequence:

A T C G G T A G C A A
T A G C C A T C G A A(1 point)

insertion mutation

deletion mutation

chromosomal mutation

substitution mutation

Answers

Answer:

Deletion

Explanation:

because one base is deleted.

The mutation from A T A C G G T A G C A A to A T C G G T A G C A A is a deletion mutation.

MUTATION:Mutation is referred to as any change in the nucleotide sequence of DNA molecule.

Mutation can be of different types namely: deletion mutation, substitution, insertion mutation etc.

Deletion mutation is a kind of mutation that involves the removal of one or more nucleotide base from the DNA sequence.

According to this question, an original sequence is given as: A T A C G G T A G C A A, mutation occurs and results in the following sequence: A T C G G T A G C A A.

Nucleotide base "A" was removed from this sequence, hence, it is an example of deletion mutation.

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Some fossil snakes have remnants of hip bones and legs even though these animals had no legs. These remnant structures are best described as:

Answers

Some fossil snakes have remnants of hip bones and legs even though these animals had no legs. These remnant structures are best described as: vestigial structures.

Vestigial structures are organic structures that do not appear to fulfill any important biological function in the organism that possesses them.

These structures are preserved as an inheritance of the evolutionary process, because at some point in the history of evolution an ancestor of the current species had that structure.

These types of structures, which can be bones, organs, structures in the skin or any other part of the body, no longer offer any meaningful function for the body.

The presence of vestigial structures in animals is considered proof that evolution and natural selection exists.

Therefore, we can conclude that some fossil snakes have remnants of hip bones and legs even though these animals had no legs. These remnant structures are best described as vestigial structures.

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What is oxidative phosphorylation.

Answers

Answer:

Oxidative phosphorylation or electron transport-linked phosphorylation or terminal oxidation is the metabolic pathway in which cells use enzymes to oxidize nutrients, thereby releasing chemical energy in order to produce adenosine triphosphate. In eukaryotes, this takes place inside mitochondria

Answer:

Oxidative phosphorylation is energy given by electron transport and this takes place during aerobic respiration in the mitochondria.

Explanation:

This process produces huge amounts of ATP, which is the unit of energy for metabolic processes.

What are the two arms of chromosome called?
a. Centromere
b. Chromatid
c. Nucleotides
d. Histones​

Answers

a. centromere

hope this helps

based on the magnetic field line diagrams, what will happen next with these two sets of magnets?

Answers

The answer is A

The magnets in step 1 will repel and the ones in set 2 will attract

Answer: its A

Explanation:

Toll-like receptors are eukaryotic membrane proteins that bind with bacterial surface molecules and: ____________

a. cause the cell to phagocytize the bacteria.
b. activate the complement cascade.
c. cause the release of antibiotics to kill the bacteria.
d. form channels through which bacterial proteins can enter the eukaryotic cell.
e. cause the release of cytokines that trigger host defenses against the bacteria.

Answers

Answer:

release cytokines that trigger host defenses against the bacteria

Explanation:

How can the rate of photosynthesis be measured using products or reactants.

Answers

Answer:

Theory of Measurements:

Leaf photosynthetic rate is measured by enclosing a leaf in a closed, transparent chamber and measuring the decrease in carbon dioxide concentration as a function of time.

What are some geological characteristics of glaciers in Glacier National Park?

Answers

Answer:

The minimum size criterion for a glacier is 0 .1 km², or about 25 acres. Below this size, the accumulated ice generally does not move and is stagnant. Many years of snow accumulation compacts the bottom layers of snow into ice. Under the huge weight of the snowpack (usually 100ft/30.5m thick or more), the ice becomes viscous and allows the mass to slide downhill. The appearance of crevasses and cracks attest to a glacier’s movement. Glaciers don't "bulldoze" landscape as much as they melt and re-freeze, plucking material from areas of snow deposition and moving it to other areas, like downhill conveyor belts.

Explanation:

Right on ED2021, good luck!

Which plate is the Eurasian plate?
A. D
B. C
C. B
D. A

Answers

i believe it’s D. :)

Where does energy go in respiration

Answers

Answer:

Summary. Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.

Out in the distance you see

Answers

i believe the answer is H. Bear.

if mammalian cells receive a go-ahead signal at the g1 checkpoint, they will:

Answers

If mammalian cells receive a go-ahead signal at the G1 checkpoint, they will complete the cell cycle and divide normally.

What is the Cell Cycle?

The cell cycle may be defined as the entire sequence of events happening from the end of one nuclear division to the beginning of the next nuclear division.

There are three major checkpoints in the cell cycle. One at the end of the G1 phase, the second at the end of the G2 phase, and while third is during the M phase.

Therefore, if mammalian cells receive a go-ahead signal at the G1 checkpoint, they will complete the cell cycle and divide normally.

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please help i will give brainliest

Answers

Answer:

Mark Brainliest

Explanation:

Trap NestSaltStarter MashInternetPneumoniaPeiits GoatsChicken CoopPlankTonsFertilizer

Explain how pollution from one location
can affect the environment far away from the
source of the pollution

Answers

Answer:

Air quality is affected by natural processes. Wind can move pollutants from their source to far-away locations. It can still spread and harm living creatures and destroy their environments.

Explanation:

Air quality is affected by natural processes where wind can carry pollutants to places far away from their source which can still spread and harm living beings and destroy their environments.

What is Pollution?

Pollution is defined as the introduction of harmful materials into the environment where the harmful materials are called pollutants. Pollutants can be natural, such as volcanic ash which can also be created by human activity, such as waste or runoff produced by factories. Pollutants harm the quality of air, water and land.

Many things produce pollution such as cars spewing pollutants from their exhaust pipes. Burning coal to generate electricity pollutes the air. Industries and homes generate waste and sewage that can pollute land and water. Pesticides which is chemical poisons used to kill weeds and insects which is seep into waterways and harm wildlife.

Thus, air quality is affected by natural processes where wind can carry pollutants to places far away from their source which can still spread and harm living beings and destroy their environments.

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In the GAL gene system, ________ are cis-acting regulatory elements, and the ________ protein is a trans-acting regulatory protein.

Answers

Answer:

UASG; Gal4

Explanation:

the principal mineralocorticoid is _____________ that helps regulate levels of _____________ in the blood and body fluids.

Answers

Answer:

The principal mineralocorticoid is aldosterone that helps regulate levels of sodium and potassium ions in the blood and body fluids.

How does humus help in plant growth?​

Answers

Explanation:

Humus gives the soil the ability to absorb and retain moisture. Such soils do not dry out and require significantly less irrigation. Humus provides a reservoir for the plant nutrients available in the soil for balanced plant growth.

Answer:

Humus gives the soil the ability to absorb and retain moisture. Such soils do not dry out and require significantly less irrigation. Humus provides a reservoir for the plant nutrients available in the soil for balanced plant growth.

Which two atoms form an ionic bond?
A.sodium and bromine
B. two sodium atoms
C. two oxygen atoms
D fluorine and chlorine

Answers

Answer:

sodium and bromine

Explanation:

The one valence electron from sodium would be transferred to the bromine atom so they can both have an octet.

Which two atoms form an ionic bond?

Answer : A

Explanation : Ionic bond is a type of chemical bond and binds the chemical molecules together. Ionic bond is formed by the transfer of electrons from an electropositive element ( metal) to the electronegative element (non metal).

Sodium is an electropositive element and contains one positive charge. Bromine is an electronegative element with a single negative charge over it. Sodium gives the electron to bromine and results in the formation of ionic bond.

Thus, the correct answer is option (C).

Hope this helps you!

The process of glycolysis produces 4 ATP total, but we say that the net ATP production is 2 ATP. What happened to the two other ATP molecules

Answers

The process of glycolysis requires two ATP molecules to get started.
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