Biology Middle School

Which of the following occurs
while homologous chromosomes
are paired up?
A. They create 2 haploid cells.
B. They contain 6 chromatids.
C. They exchange portions of their DNA.
D. They produce two diploid cells.

Answers

Answer 1
The Correct answer is D
Answer 2

Answer:

Explanation:

the answer is c just answered

Related Questions

What do prokaryotes have in common with eukaryotes?

A. They both have a Golgi apparatus.
B. They both have mitochondria.
C. They both have a nuclear membrane.
D. They both have a liquid cytoplasm.

Answers

Answer:

They both have a liquid cytoplasm.

Explanation:

A liquid cytoplasm is an essential part of a cell, in both prokaryotes and eukaryotes. It supports the internal components of the cell, and is the site of many vital cellular processes, such as glycolysis (the first part of cellular respiration).

The Golgi apparatus and the mitochondria are membrane-bound organelles that serve a specific purpose in eukaryotic cells. However, prokaryotic cells do not contain any membrane-bound organelles.

Prokaryotes do have a nucleus, like eukaryotes, but unlike in a eukaryotic cell, a prokaryotic nucleus is not surrounded by a nuclear membrane. Instead, it is just confined to a certain area of the cell, called a nucleoid.

Prokaryotes and eukaryotes  both have a nuclear membrane. Option C

What is the commonality?

Prokaryotes and eukaryotes are two large categories of cells with notable variations in their organization and structure. They do, however, have some things in common.

The existence of a nuclear membrane or nuclear envelope is one of the similarities between prokaryotes (such as bacteria) and eukaryotes (such as plants, animals, fungi, and protists). The cell's genetic material, which can be either DNA or RNA, is encased in the nuclear membrane. It divides the cellular components into the nucleus and the remainder.

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Question 1 of 10
2 Points
Blood has traveled from the heart to the fingers. Which describes the next
step of the circulation process?
A. The blood travels to the lungs to get carbon dioxide.
B. The blood returns to the heart through veins.
C. The blood releases oxygen on the way back to the heart.
0
D. The blood goes through the liver to be cleaned.
SUBMIT

Answers

Answer:

The blood returns to the heart through veins.

Explanation:

Blood returns to the heart from the body through the Vena Cava and from the lungs through the Pulmonary Vein . So mainly blood returns to the heart through Veins.

hope this helped!

Multiple organs which are engaged in a specific process form a(n) ???

Answers

An organ system, I think. Hope this helps!

Answer: organ system

Explanation:

For example the stomach and intestines  that work together to digest food would be a digestive system. so depends on the organs that are working together.

Which of these is a carbohydrate? A. C6H12O6 B. C6H6O12 C. C6H13O2N D. C3H7O2NS

Answers

It is carbohydrate is A C6H6O12

Answer:

A. C6H12O6

Explanation:

edge 2021

Which cell structures are seen in prokaryotic and eukaryotic cells?
nucleus
cell membrane
mitochondria
DNA
ribosomes
cytoplasm

Answers

Answer:

cell membrane

DNA

ribosomes

cytoplasm

Explanation: Took assignment on edge

Answer:

B,D,E,F

Explanation:

Why do we only have fossils of a fraction of the things that have existed on
Earth?
O A. Many environments destroy fossils over time.
OB. Only mammals can become fossilized.
O C. Fossils can only form during a warm period.
O D. Many organisms live in the ocean.

Answers

The answer is A. Many environments destroy fossils over time

Coastal plains are also referred to as ____. a. marshes c. interior plains b. lowlands d. plateaus

Answers

The correct answer is B) lowlands.

Coastal plains are also referred to as lowlands.

This region of the United States is a flat land next to the sea. Oftentimes this region is divided from other parts by mountain chains. We are talking about the coastal plains along the Atlantic Ocean. This low relief region of the East Coast extends for 2,200 miles from the state of New York to the state of Florida.

Answer:

b. lowlands

Explanation:

fruit is absent in ?

a.Mango
b.rose
c. pine
d.sunflower ​

Answers

Answer: C: Pine

Explanation: Pine belong to the gymnosperms ( Naked seed plants) group, a group of plants with flower that has no ovary hence no fruit. The seeds are borne naked on scaly structures or leaves surface. Other examples in this group are Conifers, Cycads, Ginkgo e.t.c

DNA serves as a template for a new strand

Answers

Visualizing Transcription
DNA is double-stranded, but only one strand serves as a template for transcription at any given time. This template strand is called the noncoding strand. The nontemplate strand is referred to as the coding strand because its sequence will be the same as that of the new RNA molecule.

what are the steps of enzyme activity?

Answers

Four Steps of Enzyme Action
1. The enzyme and the substrate are in the same area. Some situations have more than one substrate molecule that the enzyme will change.

2. The enzyme grabs on to the substrate at a special area called the active site. The combination is called the enzyme/substrate complex. Enzymes are very, very specific and don't just grab on to any molecule. The active site is a specially shaped area of the enzyme that fits around the substrate. The active site is like the grasping claw of the robot on the assembly line. It can only pick up one or two parts.

3. A process called catalysis happens. Catalysis is when the substrate is changed. It could be broken down or combined with another molecule to make something new. It will break or build chemical bonds. When done, you will have the enzyme/products complex.

4. The enzyme releases the product. When the enzyme lets go, it returns to its original shape. It is then ready to work on another molecule of substrate.

what are 3 things that are not nucleotides in science

Answers

Answer: plants , water , and rocks

Explanation:

Plants water and rocks

Which of the following trends show the relationship between deforestation and the Greenhouse Effect?

Answers

When forests are cleared and trees burned, carbon dioxide is released into the air. ... Rice paddies on lands converted from forests produce methane gas which also contributes to the greenhouse effect.

I need to know it ASAP thanks

Answers

The answer is B cause nucleus sends it to the entire cell
The correct answer is B Remember the endoplasmic reticulum is surrounded by rhizomes which are responsible for synthesis of proteins

The 1918 influenza epidemic killed between 50 million and 100 million people worldwide. This epidemic happened near the end of World War I. More people died from the influenza epidemic than were killed in the war. Which of the following explains why this virus was so deadly worldwide? Your answer: A.All of the answer choices B.Infected soldiers returning from the war spread the virus when they coughed. C.Medical personnel often became ill as a result of exposure to airborne virus particles.

Answers

Answer:

C

Explanation:

medical personnel often became ill as a result of exposure to airborne virus particles.

A
The explanation to why the virus killed so many worldwide isn’t just limited to B or C. Many factors went into play.

Animal behavior is based on

Answers

Answer:

satisfying physiological needs

Explanation:

satisfying personal needs

how does natural selection apply to an individual?

Answers

Answer:

read below

Explanation:

Individuals with adaptive traits, traits that give them some advantage are more likely to survive and reproduce. These individuals then pass the adaptive traits on to their offspring. Through this process of natural selection,  traits are transmitted through generations and generations.

A peacock and a turkey mate, producing a viable but infertile turcock. This is an example of:

A.gametic isolation

B.hybrid inviability

C.behavioral isolation

D.hybrid sterility

E.hybrid breakdown

Answers

Answer:

E. breakdown

I am not sure

To push a heavy box up a ramp into a moving van, what could be used to
decrease the force of friction?
Check all that apply.
O A. Place rollers or wheels on the bottom of the box.
O B. Place another box on top of the one you are trying to slide.
0 C. Push harder on the box.
I D. Put a lubricant between the ramp and the box.
*THERE IS MORE THAN ONE ANSWER *

Answers

Answer:

I would say A. and D.

Explanation:

These 2 options can help decrease the force of friction.

The answer is D I think

A plant has two alleles for color. The red allele is recessive, and is
represented by q. The purple allele is dominant, and is represented by p. If 59
of 100 organisms are red, what is ?
p+ 2pq+= 1

A. 0.77
B. 0.48
C. 0.23
O
D. 0.59

Answers

Answer:

it's 0.77

Explanation:

Answer:

0.77

I took the test

QUESTION 1

At what type of plate boundary do lithospheric plates slide against each other horizontally?

divergent

transform

convergent
3 points
QUESTION 2

Where do most transform faults occur?

interior of continents

at oceanic ridges

in the ocean near continental boundaries
3 points
QUESTION 3

The San Andreas Fault in California is an example of a transform fault that has developed where the Pacific Plate moves past the North American Plate.
True
False
2 points
QUESTION 4

The lithosphere is relatively cold along a transform fault, making brittle fracture of rock materials common.
True
False
2 points
QUESTION 5

Earthquakes that take place along transform faults release huge amounts of energy.
True
False
2 points
QUESTION 6

Most volcanism along transform faults originates from

melting of mantle as it rises to fill pull-apart basins

subduction of oceanic plates under continental plates

both a and b
3 points
QUESTION 7

A "leaky" transform system is one that has

active sedimentation

metamorphic activity

volcanic activity
3 points
QUESTION 8

Transform faults can offset spreading centers in oceanic crust by several kilometers in length.
True
False
2 points
QUESTION 9

At the ocean floor transform plate boundaries, which of the following can cause mineral recrystallization of basalt?

brittle fracture of rocks

upwelling magma

high heat and ductile deformation
3 points
QUESTION 10

Which of the following famous transform fault systems produces large earthquakes in Canada?

North Anatolian

Alpine

Queen Charlotte

Answers

Answer:

1.transform

2.at oceanic ridges

3.true

Can someone please help me I am doing a project were I have to wet a cloth and wrap it around a thermometer. Then I have a dry cloth and wrap it around another thermometer. The degrees for the wet one was 40 degrees and the dry one was 35. I had to do it three times and the dry one was still 35 on three trys and the wet one was still 40. now calculate the average. (f degrees - 32) x 5/9= the celsius

Answers

Answer:

Explanation:

35 + 35 + 35 + 40 + 40 + 40

(the numbers are there three times due to each trial value. you have to account for each.)

From the math you get 225.

Divide 225 by six due to their being six values

37.5 would be the average without the (f degrees-32) x 5/9

(now following the formula you put ((dont know if you have to follow though)))

37.5 - 32 x 5/9 = 3.055555556 degrees celcius.

What are some examples of comparative embryology in evolution?

Answers

Answer:

Similarities in structure among distantly related species are analogous if they evolved independently in similar environments. They provide good evidence for natural selection. Examples of evidence from embryology which supports common ancestry include the tail and gill slits present in all early vertebrate embryos.

A student has to perform an experiment on the effect of heat on a particular chemical which can be seen in the form of a color change. Which
section of his lab report will include the color change in that chemical?
А. Title
B. Conclusions
C.Results

Answers

The answer is c. The results

The products of photosynthesis are
carbon dioxide.
glucose.
oxygen.
water.
DONE

Answers

Answer:

Oxygen is definitely one of them, but I'm not completely sure about any of the others. If I had to guess it may be glucose

As in mitosis, in Meiosis the chromosomes move toward opposite poles of a cell in____.

Answers

Answer

The chromosones move toward opposite poles of a cell in Anaphase

Which statements regarding hypotheses are true?
Check all that apply.

Answers

Do you have a picture to go with it

Answer:

Hypotheses are based on observations.

Hypotheses are formed from testable questions.

Hypotheses are tested with controlled experiments.

what is mental disorder ?

Answers

Answer:

Depression

Explanation:

Answer:

a brain related problem

a mental problem eg

madness

why might the use of common names to describe organisms cause confusion? (for taxonomy and classification unit)

Answers

Many species are similar, if common names are used people will get confused


An organism has two different possible traits, A and B. A graph of the population is shown right. Which of the following statements is true about Trait B? Check all that apply.

It decreased in frequency over time.

It became extinct.

It is carried on a recessive allele.

Answers

It decreased in frequency over time.

Trait B decreased in frequency over time. So, the correct option is A.

What is trait?

A trait is an attribute or characteristic of an organism that is influenced by its genes, according to genetics. Behavioural and physical characteristics, including intelligence and friendliness, can be altered by a combination of hereditary and environmental variables.

A trait is a distinctive quality or attribute that can be acquired by environmental circumstances, genetic inheritance, or both. In biology, traits are observable and quantifiable qualities of an organism, including its physical characteristics, behaviour, and other traits. For instance, physical characteristics like eye colour, height, and hair texture can all be passed on through genetics.

Hence, the correct option is A.

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The number of individuals that an
area can support is limited by____
A. predation
B. resources
C. parasites

Answers

B resources, with out resources no one can live or stay resource is the base of live and staying
the number of individuals that an area can support is limited by resources. an organism has a higher percentage of adapting to a place if there is enough resources regardless of predation. without the resources the area couldn’t support so many organisms in one all at once.
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