Lesson Worksheet
Multiple Choice
Circle the letter of the correct choice.

1 Which of the following is the basic unit of matter?
molecule
chemical compound
atom
nucleus

2 Water is an example of a(n)
atom
molecule
ion
native element

3 An atom is only an ion if it has more or less
neutrons than electrons
protons than neutrons
neutrons than protons
electrons than protons

4 An example of a pure element is
table salt
silicon dioxide
sulfur
calcium carbonate

5 The crystal shape of a mineral
shows how the atoms are arranged
will always be the same if it is made from the same atoms
can usually only be seen under a microscope
can help account for how hard or brittle a mineral is

True or False
Write true if the statement is true or false if the statement is false.
_______ 6. A molecule is the smallest unit of an element.
_______ 7. Protons and electrons are found in the nucleus of an atom.
_______ 8. Halides (salts) make up the largest group of minerals on Earth.
_______ 9. Coal and diamonds are different minerals because they have a different structures.
_______ 10. In a crystal, the atoms are arranged in a pattern.
Fill in the Blanks
Fill in the blank with the term that best completes the sentence.
11. 90% of Earth’s crust is made of minerals in the group called a(n) ______________________.
12. The _______________ makeup of a material is the different atoms and molecules that it is composed of.
13. Even though calcium carbonate is made by marine animals, it is still ____________________.
14. ___________________ is the substance of which physical objects are made.
15. Electrically neutral particles are called _________________.
Short Answer

Answers

Answer 1

Answer:

1. atom

2.

3. electrons than protons

4. salt

5.

6. false

7. true

8. false

9. false

10. true

11. silicate

12. compound?

13.

14. energy

15. neutrons

Explanation:

those are my best answers I'm pretty sure about 12 but not positive and I didn't know about 2, 5 or 13. I hope it still helped though


Related Questions

Which correctly lists three water sources that contribute to a river system?

groundwater, ponds, streams
lakes, rivers, ponds
rivers, streams, watersheds
streams, lakes, oceans

Answers

Answer:

c

Explanation:

your welcome luv <3

The correct three water sources of a river system are rivers, streams,  and watersheds.

What is a river system?

A river system is  the pattern formed by the streams, rivers, and lakes in a particular drainage basin

Water sources of a river system

The water sources of a river system include the followings;

Rivers, Streams, Watersheds

Thus, the correct three sources of a river system are rivers, streams,  and watersheds.

Learn more about river systems here: https://brainly.com/question/719014

The first filial (F1) generation is the result of?

Answers

Answer:

F1 is the result of two cross-pollinated parent plants.

Explanation:

So basically, when you cross two true breeding parent plants, then the offspring is known as the F1 generation i believe.

What is a major difference between Animalia and Plantar kingdoms

Answers

Answer:

Plantar: The cells of this kingdom contain cell wall.Plants don't have any locomotion.

Animalia: Animal cells do not have any cell walls. Animals have locomotion and they can move from one place to another.

A particle of a compound is called what?

Answers

It’s called a molecule :)
A compound is made up made up of molecules so the answer is a molecule

Widow's peak is a dominant trait (W). Tongue-rolling is a dominant trait (T). Two people who are heterozygous for both traits (widow's peak, tong-roller) get married and have children. Complete the Punnett square to show the parents the probabilities for each child, then answer the question that follows.
What is the probability that the parents will have a child without a widow's peak and unable to roll his tongue?

Group of answer choices

3/16

9/16

0/16

1/16

Answers

Answer:

The correct answers are -

A. 1)  WWTt    2) WWTt   3)WwTt   4)wwTT

B. 1/16

Explanation:

We know that each gene have minimum two alleles or forms of the gene one is dominant and the other is recessive. So, it is given that W is dominant trait that represents widow's peak so the recessive allele would be w, similarly for the tongue-rolling trait dominant is T n recessive would be t.

So the dihybrid cross of heterozygous parents for both is shown in the punnet square given which lack few possibilities that can easily be carried out by the gametes mention there that are

1. WWTt  by WT and Wt gamets

2. WWTt  by WT and Wt

3)WwTt   by Wt and wT

4)wwTT by wT and wT

And the possibility of a child without a widow's peak and unable to roll his tongue would be possible only if the alleles are recessive for the both trait which is one out of 16 in punnet square thus the possibility would be - 1/16

The stage of meiosis where the chromosomes do not move apart equally and cause chromosomal abnormalities is

Answers

Answer: anaphase

Explanation: Nondisjunction can occur during anaphase of mitosis, meiosis I, or meiosis II. During anaphase, sister chromatids (or homologous chromosomes for meiosis I), will separate and move to opposite poles of the cell, pulled by microtubules

Hope this helps :)

When the process of mitosis is correctly completed, the daughter cells should contain exact copies of all of an organism's genes. Which biomolecule contains all of an organism's genes?

Answers

Answer: nucleic acids

Explanation:

what is one of the negative consequences of burning wast

Answers

Answer:

Toxic fumes

Explanation:

Answer:

It pollutes the groundwater

Explanation:

 

Need help pls if you can

Answers

Answer:

60

Explanation:

60 I think I’m not 100 percent sure

Which of these is not produced in the Calvin Cycle?
Sugar
NADPH
ООООО
с
ADP
d
АТР
e
CO2
Question 39
True or False Animal cells contain a cell wall?

Answers

NADPH i think it’s that

Can you identify the different parts of the water cycle?

Answers

Evaporation, condensation, transpiration, precipitation, groundwater, surface runoff

Read through the list of organisms below. Of the organisms below, which ones are autotrophs? . aquatic photosynthetic bacteria a blue whale cheetah green-winged macaw honeybee humans maple tree phytoplankton rye grass tulips​

Answers

Answer:

aquatic photosynthetic bacteria, maple tree, phytoplankton rye grass tulips

Explanation:

All are plants or does phtosynthesis which is what autotrophs are.

What is a characteristic that helps a living thing survive and
reproduce in a given environment called?

Answers

Answer: An adapation

Explanation:

In the image below, what atom is shown in white? URGENT!!!!

Answers

Answer:

Pick Hydrogen, but read below.

Explanation:

The blacks are Carbon. They have 4 connections. The left Carbon has 3 whites connected to it. It is not totally an exclusive answer, but the whites could be anything in Column 17 (F, Cl, Br, I) or Hydrogen. Likely it is hydrogen.

The answer is Hydrogen

HELP!! Which of the following is NOT true of protein structure?
A: Proteins' secondary structure is dictated by peptide bonds.

B: Proteins' tertiary structure is dictated by R group bonds.

C: Proteins have quaternary structure when they are arranged together.

Answers

The statement that is not true related to the protein structure is option b.  Proteins' tertiary structure is dictated by R group bonds.

What is protein structure?

It is classified as the  three dimensional shape of the protein.

In the tertiary structure it does contain the  single polypeptide chain that we called as the backbone or there more than one protein secondary structures

Also, it should not be dictated by R group bonds.

Therefore, we can conclude that the option b is correct.

Learn more about protein here: https://brainly.com/question/24852582

Answer:  A)

Explanation:

please . help. thank you .

Answers

Answer:

The oldest rock layer is letter E and the youngest is letter A

Explanation:

Soil piles on top of each other as time goes on via weather

If all cells in your body contain the same DNA why do they perform different functions. Pls help

Answers

Answer: These cells are different because they use the same set of genes differently. So even though each of our cells has the same genes, each cell can select which ones it wants to "turn on" and which ones it wants to keep "turned off". So when everything is working properly, each cell type only reads the genes it needs.

Explanation:

They are differentiated based on the genes that's why they perform different function.

it involves a switch from one pattern of gene expression to another.

What are genes? Gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called.Many genes do not code for proteins.

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#SPJ2

A cell moves particles from a region of lesser concentration to a region of greater
concentration by
1)facilitated diffusion
2)passive transport
3)osmosis
4) active transport

Answers

Answer:

facilitated diffusion

Explanation:

Best if luck pal

A cell moves particles from a region of lesser concentration to a region of greater concentration by Facilitated Diffusion.

Facilitated Diffusion in the cell body is the passive movement of particles  across a plasma membrane from a region of higher concentration to a region of lower concentration

Examples of biological processes that undergo  facilitated diffusion are

The movement of glucose and amino acid into the cell from the bloodstream.The transport of carbon dioxide(gas )from the lungsion transport.

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Please help me with this it’s the last one I need

Answers

Answer:

species

Explanation:

please mark me brainliest and 5 star

What happens during the first two stages of cellular respiration?

Answers

Answer:

Cellular respiration uses energy in glucose to make ATP. Aerobic (“oxygen-using”) respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. In glycolysis, glucose is split into two molecules of pyruvate. ... Life first evolved in the absence of oxygen, and glycolysis does not require oxygen.

Explanation:

Got it from Goog|e >.<

In a certain species of plant, the color purple (P) is dominant to the color white (p). According to the Punnett Square, what is the probability of an offspring being purple?

Answers

Answer:

If both are (PP and ww) and one is dominant the other is recessive then it is 100%  purple.

IF both are heterozygous (pw) then it is 75% purple and 25% white

if one is Hetro(pw) and the other is (ww) 50% white 50% purple

Explanation:

What is pushing apart North America and Eurasia?

Answers

Answer:

The North American and Eurasian Plates are moving away from each other along the line of the Mid Atlantic Ridge. The Ridge extends into the South Atlantic Ocean between the South American and African Plates.

Which effect of long-term environmental change is the driving force behind evolution?
O adaptation
O extinction
O migration
O speciation

Answers

Answer:

A) adaptation

Explanation:

adaptation is the effect of long-term environmental change that is the driving force behind evolution.

Answer:

A :)

Explanation:

7. Cell division occurs as part of which process? *
Energy in food is released
O A cut on a person's finger heals
O A disinfectant destroys microbes
O The body eliminates wastes

Answers

Answer:

A cut on a person's finger heals

What type of mutation is the following: ATCGAC to TTCGAC
a)point
b)insertion
c) deletion

Answers

Answer:

c) deletion is the type of mutation in the following

The answer is a) point.

A sun and plant. An arrow pointing to the leaf is labeled A. The sun rays are labeled B. Arrows pointing away from the leaves are labeled C. A substance on the leaf is labeled D. Arrows from the ground entering the plant are labeled E. Which labels would correctly model photosynthesis?

Answers

Answer:

When the arrow is risen as the sun rays also because the shift of day to night

Explanation:

Plant

60 POINTS!! PLEASE HELP!!When the level of blood testosterone has increased past its set point, a negative feedback signal will be sent to the hypothalamus.


Based on the diagram, what will be the result of this signal?

A) The hypothalamus will stop production of gonadotropin-releasing hormone. As a result, the production of follicle-stimulating hormone will increase and testosterone levels will decrease.

B)The hypothalamus will stop production of gonadotropin-releasing hormone. As a result, follicle-stimulating hormone will no longer be produced and testosterone levels will start to decrease.

C)The hypothalamus will stimulate production of gonadotropin-releasing hormone. As a result, the production of follicle-stimulating hormone will increase and testosterone levels will increase.

D)The hypothalamus will stimulate production of gonadotropin-releasing hormone. As a result, the production of follicle-stimulating hormone will be inhibited and testosterone levels will decrease.

Answers

Answer:

c

Explanation:

the answer should be b, i’m sorry if it’s wrong

mark me brainliest if the answer is correct, thank you in advance :)

Describe an example of fermentation that occurs in beneficial bacterial cells within animals and explain why it is important.

Answers

Fermentation is an anaerobic process in which energy can be released from glucose even though oxygen is not available. Fermentation occurs in yeast cells, and a form of fermentation takes place in bacteria and in the muscle cells of animals. In these situations, your working muscles generate ATP anaerobically (i.e., without oxygen) using a process called fermentation. Fermentation is beneficial in that it can generate ATP quickly for working muscle cells when oxygen is scarce. Fermentation helps break down nutrients in food, making them easier to digest than their unfermented counterparts. For example, lactose — the natural sugar in milk — is broken down during fermentation into simpler sugars — glucose and galactose ( 20 ).

Microbial fermentation takes place within the gastrointestinal tract of the majority of the animals by the bacterial cells, this helps in the process of digestion and in the synthesis of certain essential components like vitamins.

• The enzymatic decomposition and the usage of food components, mainly carbohydrates by the help of microbes like bacteria anaerobically is termed microbial fermentation.  

• Within the gastrointestinal tract of the majority of animals, the process of fermentation takes place, however, the intensity of fermentation depends on the quantity of bacterial cells present, which is usually greatest in the intestine.  

• The process of fermentation within the intestine by bacteria primarily helps in the  process of metabolism and digestion of carbohydrates that does not get digested in the small intestine like residual starch and cellulose.  

• Apart from this, microbial fermentation also helps in the production of vitamin K and some B vitamins.  

Thus, microbial fermentation within the intestine of the majority of the animals performs essential functions like digestion and production of vitamins.

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Most species of E. Coli are harmless or even helpful forms of bacteria that are found in the human intestine. E. Coli can aid humans in digestion and provide protection from other invading bacteria, but if the bacteria move to the human excretory system, they can replace other naturally occurring bacteria (Lactobaccilli). This can lead to bladder and kidney infections. Researchers found that by replenishing the excretory system with the naturally occurring bacteria, the infection caused by E. Coli is cured. Based on the research, what inference can researchers claim about the effect of bacteria?

Answers

Answer:

The inference is that bacteria can be pathogenic or characteristic of the commensal microbiota of different organs.

Explanation:

The human coexists with commensal micro-flora or commensal biota that are in balance and protect it from other pathogenic microorganisms, that is why we constantly live with a group of bacteria that do not generate pathological conditions in our body and even promote the stimulation of the immune response. .

When this balance is broken, pathogenic or opportunistic microorganisms invade, this is how they proliferate and generate infectious diseases that threaten the balance or state of human health.

The question is in the picture.​

Answers

Answer:

A. because mitiosis creates a cell that is exactly the same as it's parent. It's kinda like having a parent/grandparent that looks just like you

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