Which statement is false about B-lactam antibiotics?
a) They are inactivated by bacterial B-lactamases
b) They can maintain their activity by co-administering B-lactamase inhibitors
c) They are reversible inhibitors
d) They inhibit a bacterial transpeptidase reaction

Answers

Answer 1

Answer: c) They are reversible inhibitors

Explanation: B-lactam antibiotics are not are reversible inhibitors. reversible inhibitors are inhibitors which the allow enzymes they inhibit to start working again, as there is no perman effects on the enzymes ( there is no change to the shape of it active site.). They can sometimes appear as competitive, non-competitive or uncompetitive.


Related Questions

Please help!!!!!!!!!

Answers

Answer:

Explanation:

enzymes i think

Answer:

B

Explanation:

enzymes

Cells regulate chemical reactions through the use of proteins called enzymes, which are biological catalysts that help overcome activation 

What helps water move across the
membrane quicker?

Answers

Answer:

The sell membrane

Explanation:

Hope it helped

Answer:

A channel protein

Explanation:

A channel protein, a type of transport protein, acts like a pore in the membrane that lets water molecules or small ions through quickly. Water channel proteins (aquaporins) allow water to diffuse across the membrane at a very fast rate. Ion channel proteins allow ions to diffuse across the membrane.

Which eukaryotic kingdoms could be made up of multicellular organisms

Answers

Answer:

the inside

Explanation:

what is the amino acid responsible for increasing bone length​

Answers

Answer:

alanine, arginine, glutamic acid, glycine, and proline—may play a role in bone health, principally through improved production of insulin and insulin‐like growth factor 1 and the synthesis of collagen and muscle protein

Explanation:

Which objective is referred to as the "scanning objective"?

Answers

Answer:

This question lacks options; they are:

a. 4x b. 10x c. 20x d. 100x

The answer is A

Explanation:

The objective lens is an integral part of a light microscope as it provides the viewer with the picture or image of the specimen. There are several types of objective lens depending on their magnification.

The lowest possible objective lens with the power of 4x is called the SCANNING OBJECTIVE. In combination with the eye/occular lens, it provides a magnification of 4x × 10 = 40x. The name of this lens comes from the fact that it provides a full scan of every part of the specimen being viewed before diversifying into a specific region by changing the objective.

4. Distinguish between the types of scientific

investigations. Does all scientific knowledge

come from experimentation? Explain your

answer. SC.7.N.1.3

Answers

Answer: Descriptive, Comparative and Experimental (which comes from experimentation).

Explanation:

There are three types of scientific investigations:

Descriptive: This type of scientific investigation studies parts of a system, which can be natural or artificial. It describes everything that is being studied and no predictions are made. There are three types of descriptive methods: case-study methods (an in-depth study is produced from many sources with different methods), observational methods (no questions asked, just an observation of the behavior of a subject and no manipulation of the variables), and survey method (some people are interviewed and the researchers study the answers.)

Comparative: It gathers information from organisms, systems, places or from any source, to compare them using also a control group. But, there is no imposed treatment because it is not ethical or because it is not possible. So, the treatment is only observed.

Experiment: As its names says, it uses an experimental test designed to study some phenomena, where variables are controlled so the treatment is not only observed as the comparative method. Then those variables are measured to collect information or evidence that supports or not a previous hypothesis and is used to assess theoretical knowledge. The independent variable is manipulated while the dependent variable is measured. This type of scientific investigation comes from experimentation.

Water molecules being attracted to other molecules (not water) is an example of?

Answers

Answer:

In cohesion, water molecules are attracted to each other (because of hydrogen bonding), keeping the molecules together at the liquid-gas (water-air) interface, although there is no more room in the glass.

How do I explain this? ‘The plant shows the characteristic responding to environment because...’

Answers

phototropism : shoot grows upwards in response to light stimulus.

hidrotropism : roots grow to the area with the highest water concentration.

geotropism : a coordinated process which shoot grows against gravity while root grows down the gravity.

in atom structure what is present in the same numbers as the protons in an atom.i will make as brainlest​

Answers

Answer:

Explanation:

electrons i believe. That is why an atom has a neutral charge- electrons and protons cancel each other out

Answer:

Electrons

Explanation:

An atom contains the same number of protons as electrons to maintain a negative charge. An ion is an atom which has lost or gained electrons.

Identify characteristic is used to determine whether an organism is a first or second level consumer?

Answers

Answer:

i don't understand

Explanation:

kkkkkkk

The seed plants become dominant during the late when the climate became

Answers

Answer:

Cold

Explanation:

They can not survive in cold conditions

Which feature do amber fossils have that mold fossils do not?
O preserved soft tissue
O organisms turned into rock
O solid copies of the original organism
O impressions of hard tissue left by organisms

Answers

Answer: preserved soft tissue

Explanation: just took the test!

The feature do amber fossils have that mold fossils do not preserved soft tissue. Thus, option A is correct.

What are fossils?

The fossil can be defined as the compression of the animal, plant or some organism that was living. It is compressed by the rocks or or settled in the water bodies in the form of sediments. The fossil residues have some of the carbon left in it.

This carbon is estimated by carbon dating in order to get the age of the fossil.The preserved fossils have carbon residue left which can be used as a source of information.

There are several types of the connective tissues: bones, ligaments, tendons, cartilage, and adipose tissue. In the foot, among all connective tissues, ligaments and tendons are the most abundant types. Ligaments and tendons mostly consist of densely packed collagen, which is the main structural protein of the connective tissues.

Therefore, The feature do amber fossils have that mold fossils do not preserved soft tissue. Thus, option A is correct.

Learn more about amber fossils on:

https://brainly.com/question/13175037

#SPJ6

Which of the following is a biotic factors in an ecosystem? O sunlight O nutrients in soil and water O precipitation O microorganisms​

Answers

Answer:

microorganisms​

Explanation:

Biotic factors include fungi,algae,bacteria etc.

While, Abiotic factors include soil, water ,sunlight and minerals

Answer:

[tex]\boxed {\tt D. \ Microorganisms}[/tex]

Explanation:

A biotic factor is a living thing in an ecosystem. For example: deer, rabbits, grass and trees are all biotic factors.

An abiotic factor is a nonliving thing in an ecosystem. Some examples include rocks, soil, and water.

Let's examine our answer choices.

Sunlight, nutrients, and precipitation are all nonliving, so they are abiotic factors. They can't be the correct choice.

That leaves: microorganisms. Microorganisms are very tiny organisms, like bacteria and amoebas. They are biotic factors, so the correct choice is D. microorganisms

I need help please!!

Answers

Answer:

Prokaryotes and Eukaryotes are two types of cells with similarities and differences. Eukaryotes are plant cells and animal cells. They are mostly found in multi-cellular organisms. Prokaryotes are usually single-celled organisms and have a tail. Those are the examples that I remember, but there are way more similarities and differences. I hope this helped!!

Name structure(s) indicated by circle


Answers

It’s the centrioles. And don’t mix it up with the centromere

Biology

heeeeeeeeeelp ​

Answers

substrate
activate site
product

Answer:

substrate

active site - inside enzyme

Enzyme-substrate complex

Explanation:

Pls helpppp
Word Bank
protons neutrons
nucleus mass atom electron
CDD2E2 large small electron cloud electrons
small
more
electrical
same
А
consists of the following subatomic particles known as
a or create
and
The
of the atom
can be determined from the number of
and neutrons.
as done
have a positive charge, and
your work
have a negative charge. When an atom has the same number
of protons and electrons, then the atom does not have a
charge. An atom also has
that are located on the outside of
the
This area is known as the
The
Comento
mass of the
is smaller than the mass of the protons and

Answers

1. Nucleus

2.Proton

3. Neutron

4. Mass

5. Proton

6 Proton

7 Electron

8. Electrical

9. Electrons

10 Nucleus

11 Cloud

12 Electrons

13 Neutrons

Which process begins the formation of sedimentary rock?

the movement of sediment
the cementation of rock sediment
the breakdown of rock into sediment
the buildup of sediment in one location

Answers

It would have to be the breakdown of rock into sediment so like when it rains a lot or strong wind and stuff breaking to down and then it would all build up.

Answer: C

Explanation:

Because sedimentary rocks have layers and are made of of those layers which are made up of the breakdown of rock into sediment

nobody can answer this by their own part 1​

Answers

Answer:
1) c
2) a
3) c
4) c

A student wants to illustrate the number of each different bird species that migrates south in winter. Which type of chart/graph would be the most appropriate to use?

a
Pie Chart
b
Bar Graph
c
Line Graph

Answers

Answer:

bar graph

Explanation:

A bar graph

You want to show that there is no connection between one species and another.

The line graph will do exactly the opposite. It will imply that the line joining 2 points gives some connection between one point and the next point.

The Pie chart is usually used to compare one number size with a another, like the total number of Covus 19 by state each state close to the other. It is not a good choice because California (for example) might have the most number of cases of the virus but it also has the largest population. You might use the pie chart by converting it to %s, but what would that give you, and how could you use it.

What organisms, other than bacteria, are able to perform nitrogen fixation?
a.
Viruses
c.
Algae
b.
Trees
d.
Protists

Answers

Answer:

Algae is able to perform nitrogen fixation.

Answer:

The answer is C.

Explanation:

I just took the test and the answer was c.

Accepta bond formed by the electrical attraction between two oppositely charged ions is a(n)_____.

Answers

Answer:

Ionic bond

Explanation:

A bond formed by the electrical attraction between two oppositely charged ions is an Ionic bond.

Which event is an example of a living thing responding to a stimulus?
A. A rock makes a loud sound as it falls down a cliff.
B. The temperature rises during the day.
C. The wind blows the roof off a house during a storm.
D. A houseplant grows toward the window.

Answers

I believe the answer is D

Answer:

D. A houseplant grows toward the window.

Explanation:

All of the other answers are examples of nonliving things. A houseplant, however, is alive, and moves towards the window because it can receive more light.

Where in the digestive system do the amounts of glucose, amino acids, and fatty
acids increase?

Answers

Answer:

The small intestine hope this was helpful.

1) Which of the following types of heterotrophs eat other animals?
A. omnivores
B. herbivores
C. carnivores

Answers

Answer:

A & C (Omnivores and Carnivores) eat other animals.

Answer:

A and c

Explanation:

heterotrophs eat other animals?

. omnivores and carnivores

2.
4.00
POOZE 1
nucleus outside smallest inside
electrons neutral element neutrons
largest
atom
Atoms are the smallest unit of an
Within the atom is a
which is the center of the atom. The
and
neutrons are located within the
The
are outside the nucleus. The neutron has a
charge. A helium atom is the
unit of an
element. The element helium has a mass of
A helium atom has
protons and
neutrons. The electrons are
located on the
of the

Answers

Answer:

1) element

2) nucleus

3) protons

4) nucleus

5) electrons

6) neutral

7) smallest

8) 4.00

9) 2

10) 2

11) outside

12) nucleus

Explanation:

i got help from my brother and mom btw lol.....

Which of the following types of cells suppress immune responses?a. Neutrophilsb. Plasma Cellsc. Macrophagesd. Regulatory T Cells

Answers

Answer:

The correct answer is d.

Explanation:

Regulatory T-cells are a class of T cells which are part of the immune system that suppresses immune response. They are called regulatory because they assist in "checking" the excesses/overreaction during immune response.

NOTE:

Neutrophils are phagocytic in nature; they ingest and destroy microorganisms or other foreign molecules.

Plasma cells synthesize antibodies which are produced in response to antigens. They are target foreign particles for digestion by other immune cells.

Macrophages are also phagocytic in nature usually found at sites of an infection.

what follows a first quarter moon but comes before a full moon​

Answers

Half moon ………. Follows first quarter moon

Diffusion is an example of

a) passive transport

b) phagocytosis

c) endocytosis

d) active transport

Answers

Explanation:

Diffusion is an example of

a) passive transport

Answer:

[tex]\boxed {\tt A. \ Passive \ transport }[/tex]

Explanation:

First, let's define diffusion.

Diffusion is the movement of particles from areas of high concentration to low concentration. This movement is also known as moving down a concentration gradient. This process of diffusion occurs without any energy.

Since it doesn't require energy expenditure, diffusion is an example of passive transport.

Therefore, the correct answer is A. passive transport.

Define power and explain how to determine power. (4 poi

Answers

Answer:

Power is the rate of doing work

Power = work done/ time taken

Explanation:

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