Which of the following statements is true about catalysts?
a
Catalysts are used up during a chemical reaction.
b
Catalysts lower the activation energy of a chemical reaction.
c
All catalysts are enzymes.
d
Catalysts slow down the rate of chemical reactions.

Answers

Answer 1

Answer:

b. Catalysts lower the activation energy of a chemical reaction.

Explanation:


Related Questions

someone please helppp!

Answers

Answer:

D) the presence or absence of a Nucleus

Explanation:

A Nucleus is present in a Eukaryotic cell. A Nucleotide is present in a Procaryotic cell. If there is a nucleus present, it is a Eukaryotic cell

Think of a time when you injured yourself. Describe the appearance and feeling of the injury when it first happened and how the injured area changed as your body healed.

Answers

Answer:

i sprain my ancle but after some rest it got better

Explanation:

i'm not good at spelling sorry

How long does it take a bone to become a fossil?

Answers

Answer:

Fossils are defined as the remains or traces of organisms that died more than 10,000 years ago, therefore, by definition the minimum time it takes to make a fossil is 10,000 years.

Explanation:

What are the major factors that contributed to this species becoming endangered/extinct?

Answers

Answer:

Species become endangered for two main reasons: loss of habitat and loss of genetic variation. A loss of habitat can happen naturally. Dinosaurs, for instance, lost their habitat about 65 million years ago.

Explanation:

Hope this will help

5. José plans to use a microscope to observe a cell from a maple leaf and a cell from a snake's skin. Which of the following with José most likely
see in both cells?
a. Cell wall
b. Chloroplasts
c. Nucleus
d. Tissue

Answers

C I think Let me know
D. Tissue

Stay safe!!

What do the organization of systems and homeostasis have in common?​

Answers

They both part of the body

If one strand of a DNA molecule has the sequence
5'-TTCCGGAT-3', what is the sequence of the
other strand of DNA? If RNA is transcribed from
the 5'-TTCCGGAT-3' strand, what would be its se-
quence? And if RNA is transcribed from the other
DNA strand, what would be its sequence?

Answers

Answer:

DNA pair

3' AAGGCCTA 5'

RNA from original is

3' AAGGCCUA 5'

RNA from new strand

5' UUCCGGAU 3'

Explanation:

help me with this if possible

Answers

Answer:

well 5 is easy its the axis

I believe the first one is false

What happens when a baby dies in the mothers womb do the docters just take the baby out? Or do they have to do a pressideur?

Answers

Answer:

if the baby is still small you have to take a pill or when the baby is a little big they have to do a procedure.

Explanation:

If a parent cell has 6 chromosomes, how many chromosomes will there be during mitosis before the cell divides?

Answers

Probably like 4 or 3 right? I’m not sure good luck:)

Question 11
Which statement best describes the relationship between inherited traits and genes?
A
An individual's inherited traits are determined by genes, which are located inside a person's chromosomes.
B
An individual's inherited traits are based on a person's environment, and the traits change over time.
С
Inherited traits are determined by a person's health and nutrition.
D
Inherited traits are determined only by a person's maternal parent

Answers

Answer: A. Genotype is inherited

Explanation: b,c are about phenotype

D, since the maternal parent is mentioned, one can assume a diploid, sexually reproducing species, in which case both parents’ genes contribute.

Through their genes, parents transmit features or qualities to their offspring, such as eye color and blood type. Thus, option A is correct.

What is relationship between the inherited traits and genes?

We can pass on inherited features to the next generation since they are encoded in our DNA.

Examples include eye color, height, skin tone, and hair color. The differences that come from reproduction may be passed down through families, increasing the likelihood that entities will survive.

Dominant and recessive alleles are the two categories. A recessive allele is written with a lowercase letter, and a dominant allele is written with a capital letter.

The progeny will exhibit the dominant trait if a gene pair contains the dominant allele.

Therefore, An individual's inherited traits are determined by genes, which are located inside a person's chromosomes.

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3. How many layers does our skin have? *
3
5
7

Answers

Answer:

3

Explanation:

i looked it up i hope that helped!

please help!!!!!!!!!!!​

Answers

I'd say that your traits can come form your parents. if you mean physically

Answer:

everyone is different because of our enviroment

(sound food and health) and we get those traits from our parents.

Algae are green plants.
The figure below shows the number of algae in a lake in the United Kingdom during
one year.
number of
algae
Jan
Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec
month
Explain the changes in the number of algae in the lake from February to June (3)
ANSWER​

Answers

Answer:

Kindly check explanation

Explanation:

According to the graph given the number of algae is represented on the y axis while the month of the year is represented on the x - axis of the graph. The change in the number of algae from February is clearly depicted by an upward slope along the y-axis which means that there is continous increase in the Number of algae in the lake during this period, that is between February to June . It could also be seen that around June the optimal number of algaae is achieved as the number of algae tend to fall as we move beyond June.

Hey I am doing school and need someone to talk to

Answers

Answer:

focus on your work

Explanation:

haha nah only jk

Define simple sugar?

Answers

Answer:

Simple sugars are called monosaccharides, made up of single sugar molecules.

Explanation:

Examples of these are glucose, fructose, and galactose. When two simple sugars are joined together by a chemical bond they are called disaccharides, the most common of which is sucrose or table sugar

answer a sweet, crystalline substance, C12H22O11, obtained chiefly from the juice of the sugarcane and the sugar beet, and present in sorghum, maple sap

Explanation:

Conduction can only occur between two objects when –

Answers

Answer:

Conduction can only occur between two objects when -

one object is less dense than the other. both objects are in physical contact with each other.

Which one of the following is the name for the way cells divide in asexual reproduction?
Twins
Mitosis
Meiosis
Generation Square

Answers

Answer:

Mitosis

Explanation:

When a eukaryotic cell divides asexually, the nucleus and its genetic contents must divide too, in a process called mitosis. Both haploid (n) and diploid (2n) cells can divide asexually, at which time their nuclei divide mitotically.

please help, I really need a good grade I'm currently failing. ​

Answers

Answer:

B

Explanation:

all motion requires an opposite force

dash is a flexible tissue which produces new blood cells inside the bone​

Answers

Answer:

Marrow

Explanation:

The bone marrow, is a component of the lymphatic system, and is the soft flexible tissue in the cavities of bone.

The answer would be a Marrow

The health, management, and conservation of biodiversity is a challenge facing ecosystems worldwide. The major factors that
affect the health and function of the Great Barrier Reef are climate change and pollution. Which question investigates the effects
of abiotic factors on the reef ecosystem?

A)
How do calcium levels affect the habitat of stony corals?
B)
How do nitrogen levels affect the number of algae in the reef?
C. How does the number of predators affect the lionfish population?
D
How does water temperature affect the reproduction rate of coral?

Answers

Answer: C

Explanation:

Is the genetic material is made of protein?

Answers

NOOOO! Don’t believe those 1900s lies! The genetic material of life is DNA!

An element may have more than one isotope if the atoms have different numbers of
A electrons.
B neutrons.
C positrons.
D protons.

Answers

B. Neutrons —///—:/—

Which species have become extinct in modern times?

Answers

Answer:

Dodo.

Great Auk.

Stellers Sea Cow.  

Tasmanian Tiger.  

Passenger Pigeon.  

Pyrenean Ibex.

Baiji White Dolphin.  

West African Black Rhinoceros. The West African Black Rhinoceros was found in several countries towards the southeast region of Africa

Explanation:

Answer:

dodo, and many others such as saber tooth tiger

Explanation:

they have been extinct because of climate change and sea levels

Which part of the female reproductive system sheds during the menstrual cycle?​

Answers

The inner lining...........

Answer:

Endometrium / Uterine lining

Explanation:

The change in the production of the hormones Estrogen and Progesterone dictate a female's menstrual cycle. For about three weeks, the endometrium which lines the inside of the uterus thickens. If that female becomes pregnant, the endometrium stays as it's actually what a fetus uses to grow, like the yolk in an egg. If the female does not become pregnant, the uterine lining is shed. Most mammals simply absorb it back into the body, but in humans, the uterus contracts and sloughs it off, sending it through the vaginal canal and out of the body, a process which takes about a week.

The red boxes aren't labeled, but it's the topmost.

Male cones produce ______ which contains cells that develop into sperm.

(For people who need the answer)

Pollen

Answers

Answer:

yeah i was gonna say pollen cuz no one else had the right answer

Explanation:

Answer:

Yes the answer would be pollen

Explanation:

HELP ME PLEASE Question 3 of 10
Suppose an actual bird is observed to lay from one to six eggs each week.
Which of the following would be the best method for randomly determining
how many eggs an imaginary bird lays in a simulation?
A. Throwing a dart at a dartboard hanging on a wall at a distance of
10 feet
B. Blindly selecting from a bag filled with blue, green, red, and yellow
beads
C. Drawing from a deck of cards printed with either an uppercase or
lowercase a
D. Rolling a six-sided number cube and using the number on the top
side

Answers

Answer:

D. Rolling a six-sided number cube and using the number on the top side.

Explanation:

I majored in Biology

The best method for randomly determining how many eggs an imaginary bird lays in a simulation would be to roll a six-sided number cube and use the number on the top side. Therefore, option (D) is correct.

What is a simulation?

A simulation is a computer program or model that imitates a real-world system or process. It allows researchers, scientists, engineers, or other users to understand, predict, or test the behavior of a system or process under different conditions or scenarios. Simulations are used in various fields, including engineering, physics, chemistry, economics, medicine, and social sciences, among others.

They often involve mathematical or statistical models, algorithms, and computer graphics or visualizations to represent the system or process being simulated. By running a simulation, users can observe the results, draw conclusions, and make predictions about the behavior of the real-world system or process. Simulations can be helpful in decision-making, experimentation, training, and education, among other applications.

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Rosa drew a diagram to compare substitution mutation and insertion mutations. What label belongs in the area marked "Y"?

Answers

Answer:

Hey There!

_____________________________________

Answer:

_____________________________________

Mutations:

Mutations are the changes produced in the nucleotide sequence of the genome.

There are four main types of mutations

Substitution

Insertion

Deletion

Duplication.

_____________________________________

DELETION:

A small segment of chromosome mat be missing. This condition is known as deletion.

For example, Normal chromosome has A B C D E F G. If deletion mutation occurs then mutated chromosome has A D E F G and B C got deleted.

_____________________________________

DUPLICATION:

In this condition, a part of chromosome present in exec ess to the normal chromosome.

For example, Normal Chromosome has A B C D E F G. If duplication mutation occurs, then mutated chromosome had A B C B C D E F G and B C is duplicated.

_____________________________________

SUBSTITUTION MUTATION:

Substitution is a type of mutation where one base pair is replaced by a different base pair.

For example, in the sequence CAAGT, if C replaces G, it is a substitution mutation.

INSERTION MUTATION:

In genetics, an insertion is the addition of one or more nucleotide base pairs into a DNA sequence.

For example, in the sequence CAAGT, if extra base G gets inserted after C, the new sequence would be CGAAGT.

_____________________________________

Both substitution and insertion mutations change the position of nucleotide thus, the type of amino acid. Option A is correct because B and D are wrong as increase in number of bases and decrease in number of bases is because of deletion and duplication mutations here it asks for substitution and insertion mutations. C is wrong as In mutation there is always a change in bases or chromosome. So all the other choices seem incorrect as it is asking for substitution and insertion the base pair changes which results in the change in type of amino acid.

_____________________________________

Best Regards,

Helppp pleaseeeeeee!!!!

Answers

first one is correct i’m pretty sure lmk if it’s wrong :)

Which of the following is the complimentary DNA strand for the sequence shown below?

ACT GCA
Please explain, if possible.

Answers

UGA CGU, the complimentary DNA strand would be the mRNA stand

The complimentary DNA strand for the sequence ACT GCA is TGA CGT​.

What is DNA?

DNA stands for deoxyribonucleic acid which is defined as a polymer made up of two polynucleotide chains which coil around each other to form a double helix.

Primarily DNA is located in the cell nucleus called nuclear DNA, but a small amount of DNA can also be found in mitochondria called mitochondrial DNA or mtDNA, so mitochondria are structures within cells that store energy from food that converts into energy.

The information in DNA is stored in the form of code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T) which are bond to each other by hydrogen bond like A with T with 2 hydrogen bonds while C with G with 3 hydrogen bonds. Like for above given information,  ACT GCA complimentary strand is TGA CGT

Thus, The complimentary DNA strand for the sequence ACT GCA is TGA CGT​.

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