Can someone help me out please?!!!!!!!!

Which statement BEST describes the measurements he would find in the jar, in the experiment group, B, compared with the concentrations of oxygen and carbon dioxide in the classroom air?

What do mitochondrial and thylakoid membranes have in common?

Which of these is a response to an internal stimulus?

A. A sunflower turns to face the rising sun.
B. A cucumber tendril wraps around a wire.
C. A pine tree knocked sideways in a landslide grows upward in a bend.
D. Guard cells of a tomato plant leaf close when there is little water in the roots.

The human X and Y chromosomes

A. are of approximately equal size and number of genes.

B. include only genes that govern sex determination.

C. are both present in every somatic cell of males and females alike.

D. are almost entirely homologous, despite their different names.

E. include genes that determine an individual's sex.

Potato crops are grown for their carbohydrate content.
Describe how you could safely test the two species of potato to compare their carbohydrate content.

test for starch

test for reducing sugars


8 mark question - IGCSE

3
The human body contains both bones and muscles. Bones are rigid, but muscles can contract
and relax to move the body. What explains this difference in body structures?
(1 Point)
A. Muscles are made of animal cells, and bones are made of plant cells
B. Bones and muscles are made of different kinds of animal cells
C. Bones contain more cells than muscles
D. Muscle cells form tissues, but bone cells do not

Which of the following are true about earth axis choose two correct answers. A a line that passes through earths equator B a line around which earth rotates C a line along which earth travels around the sun D a line that passes through earths north and south poles E a line from earths surface to its center

Which statement describes natural selection

Imagine customers moving into and out of a coffee shop. Which situation
resembles how a reaction in dynamic equilibrium acts?
A. There are the same number of people inside the coffee shop as
outside it.
B. People enter the coffee shop at the same rate as others leave.
C. No people are moving either into or out of the coffee shop.
D. Some people sit down and drink their coffee slowly, while others
drink theirs quickly while standing up.
No

A person suffering from anemia feels tired in short walk, Why?​

What would happen if cytokinesis did not work properly?

1) DNA replication would not occur
2) A cell would have a nucleus with too many chromosomes
3) A cell would have two nuclei
4) New daughter cells would not have enough organelles or would be missing organelles
5) a cell would be smaller in size

Which of the following organelles exist in animal cells? Select all that apply.
O Mitochondria
O Cell wall
O Chloroplast
O Vacuoles
Nucleus

Elijah is learning about the Greenhouse Effect in school. He explains to his mother that the gases in the atmosphere can act similarly to the window of a greenhouse. Elijah is correct due to which of the following?

A. The gases of the atmosphere do not allow any energy to leave Earth’s surface.

B. The gases of the atmosphere form a clear and transparent solid.

C. The windows of the greenhouse are made of the carbon dioxide and water vapor.

D. The window of the greenhouse allow energy to enter but then trap some of it for recirculation.

If a mother is heterozygous for B blood type and a father is heterozygous for A blood type, predict the possible blood types of the offspring.

Which type of blood vessel is most likely to clot and cause a stroke or a heart attack

How can evolutionary change in one species lead to evolutionary change in another species that it is associated with? Include an example to support your answer.

Evaluate the neighbor's arguments in the following scenario. Are there facts he is overlooking?
An elderly neighbor says today's girls are less mature than they used to be. He says it used to be that by the time a girl had a mature body, she had
a mature brain to go along with it. The neighbor argues that it all comes down to bad parenting and too much television.

What happened when two forces act in the same direction

What is a common ancestor of all plants

1. What is the Potential energy of an object that has a mass 10 kg and has a height of 50
(m)?

What does natural selection act on?

If the allele for an attached earlobe (e) is recessive to the allele for an unattached earlobe (E), what will be the relative frequency of e in a population?
a. It could be more or less frequent than T.
b. It could only be equally as frequent as T.
c. It could only be more frequent that E.
d. It could only be less frequent than T.

In which structure of the neuron would you expect to find sites of dopamine
synthesis?
a. myelin
b. synapse
c. cell body
d. axon

how do you create a compartment

This test/quiz is accepting submissions until Thursday, March 11, 2021 at 8:00 pm

Questions 1-19 of 19 | Page 1 of 1
Question 1 (5 points)
(03.01 LC)

Which is an example of a divergent boundary?

a
Great Rift Valley

b
Himalayan Mountains

c
Peru-Chile Trench

d
San Andreas Fault

Question 2 (5 points)
(03.02 MC)

A soil sample is 35 percent sand, 10 percent clay, and 55 percent silt. Use the following soil texture triangle to determine the type of soil present in this sample.

Soil texture triangle. Silty loam soil is approximately 50 percent or less sand, 30 percent or less clay, and 50 percent or more silt. Sandy clay soil is approximately 45 to 65 percent sand, 35 to 55 percent clay, and 20 percent or less silt. Loamy sand soil is approximately 75 to 95 percent sand, 15 percent or less clay, and 25 percent or less silt. Medium loam soil is approximately 25 to 55 percent sand, 5 to 25 percent clay, and 25 to 50 percent silt.
Public Domain

a
Silty loam

b
Sandy clay

c
Loamy sand

d
Medium loam

Question 3 (5 points)
(03.03 LC)

Which gas is the least abundant in Earth's atmosphere?

a
Argon

b
Carbon dioxide

c
Helium

d
Neon

Question 4 (5 points)
(03.02 MC)

In which of the following scenarios does weathering occur but not erosion?

Lichens growing on boulders dissolve minerals in the rocks.
Sand carried downstream by a river gradually settles to the riverbed.
Wind blowing against a cliff face causes sediment to fall to the ground.
a
I only

b
II only

c
III only

d
I and II only

Question 5 (5 points)
(03.03 MC)

How would the Coriolis effect alter movement of an air mass flowing from a higher to a lower latitude in the Southern Hemisphere?

a
It would deflect the path of the air mass to the east.

b
It would deflect the path of the air mass to the west.

c
It would deflect the path of the air mass to a lower altitude.

d
It would deflect the path of the air mass to a higher altitude.

Question 6 (5 points)
(03.02 MC)

A fast-growing town requires a new source of power. Because the town is located by a fast-flowing river, the town council votes to construct a hydroelectric power plant. How might this activity affect the local watershed?

a
The hydroelectric plant will likely flood the area behind the dam that is constructed.

b
The hydroelectric plant will likely pollute the water flowing down the waterfall.

c
The hydroelectric plant will likely pollute the air above the waterfall, leading to acid rain.

d
The hydroelectric plant will likely quit operating in the summer when the river dries up.

Question 7 (5 points)
(03.05 MC)

The state of California experiences periodic occurrences of severe drought conditions. Which weather phenomenon most likely causes this, and why?

a
El Niño, because of weakening of trade winds

b
El Niño, because of strengthening of trade winds

c
La Niña, because of increased upwelling of cooler waters

d
La Niña, because of decreased upwelling of cooler waters

Question 8 (10 points)
(03.05 HC)

The map below shows winter storm advisories in different parts of the U.S. (indicated in light purple and bright pink). There is a flood watch (indicated in green) due to severe thunderstorms and heavy rainfall:

The map of the United States is shown. The light purple and bright pink colors in the map indicate a winter storm advisory along the Appalachian Mountains, extending north. The same two colors appear above the Rocky Mountain Range near West Virginia, Utah, and Wyoming. The dark green color is a flood watch south of the Appalachian Mountains.
© National Weather Service 2020

Refer to the map to answer the following questions:
Identify the location(s) of upcoming winter storms in the continental U.S.
Identify the location(s) of upcoming heavy rains or flood in the continental U.S.
Earth's geography, climate, and weather:
Describe the general climate of the identified locations.
Explain how the geography of the identified locations affects precipitation in their region.
In mountainous regions, there are increases in global temperatures that affects that region's climate. Propose a solution for communities in these regions to be able to tolerate their unique climate.
Your answer:
Question 9 (5 points)
(03.05 LC)

Warm ocean water is carried eastward by wind towards South America to cause changes in global climate. Which of these events is described by the statement?

a
El Niño

b
La Niña

c
Land breeze

d
Sea breeze

Transcribe and then translate the following DNA strand:
AAG GAT TAČ GAC GAG TTA ACC ACT CAA
mRNA:
Protein:

What process breaks glucose down to be used as an energy source?

Based on this graph, which of the following statements is incorrect?



FYI Online
1. The industrial revolution caused an increase in the rate of growth of the human population.

2. Significant events in human history can impact the growth of the human population.

3. The advent of modern medicine caused an increase in the rate of growth of the human population.

4. If the bubonic plague reemerged, only a small fraction of the human population would be affected.

Dude why is bio so hard please help lol


During cellular respiration, glucose molecules undergo a series of reactions. This process results in the formation of up to 38 molecules of high-energy ATP per each molecule of glucose. Which is the source of the energy stored in these ATP molecules?

chemical energy originally stored in the glucose molecule

potential energy from the difference in the concentration gradients of the cell

kinetic energy generated by the chemical reactions

electric current created during the destruction of electrons in the glucose

In what organisms does alcoholic fermentation take place?

O yeast and some bacteria
O viruses
O fruit flies
O plants