1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tangare [24]
3 years ago
8

Which of the following is a difference between plant cells and animal cells? A. In plant cells, DNA is stored in the mitochondri

a; in animal cells, the DNA is stored in the nucleus. B. Animal cells undergo cell division; plant cells do not divide. C. Animal cells carry out photosynthesis; plant cells do not. D. Plant cells have a rigid structure, while animal cells have a more flexible structure.
Chemistry
2 answers:
Contact [7]3 years ago
8 0
Your answer would be D.)

Plants have a cellulose cell wall that is very rigid, unlike animal cell walls which are not made of cellulose and are very flexible

Hope this helps!
lora16 [44]3 years ago
5 0
A. is wrong because Plants do not have their DNA in the mitochondria. They store it in the Nucleus. 
B. Also not correct. Plant cells do divide. 
C. Animal cells do not carry out photosynthesis. So this is wrong.

The correct answer would be D. Plant cells have a rigid structure. 
You might be interested in
In an exothermic reaction, the water will _______ in a calorimeter. A. release heat B. drop in temperature C. drop in volume D.
elena-14-01-66 [18.8K]

the correct answer is D, absorb heat

7 0
3 years ago
Read 2 more answers
Energy can interact with objects and cause them to ________ or change
scoundrel [369]

Answer:contact forces or transfer energy(not sure)

Explanation:

6 0
3 years ago
Assuming constant pressure, rank these reactions from most energy released by the system to most energy absorbed by the system,
givi [52]

Answer: The order from the Most energy released to most Energy   Absorbed Is given as  2---> 4--->,3-->---> 1 

B)-61.9 kJ

Explanation:

The change in the internal energy of a system  is positive if the reaction absorbs energy and  negative if the reaction releases energy. For a system to cause an increase in volume, it must have very high energy built up to be released.

1. Surroundings get colder and the system decreases in volume. Here, the surrounding absorbs energy  resulting in positive  ΔE

2. Surroundings get hotter and the system expands in volume.  Here energy is released causing the system to be negative

3. Surroundings get hotter and the system decreases in volume. Although there is a decreased volume, the system is negative because it releases energy

4. Surroundings get hotter and the system does not change in volume.  System is negative because it releases energy even thgoygh there is no change in volume

Therefore the order from the Most energy released to most Energy   Absorbed Is given as  2---> 4--->,3-->---> 1

b) Using  

 ΔE = q+ w     from 1st law of thermodynamics

 ΔE=  ΔH - P  ΔV

gIven  

 ΔH = -75.0KJ

volume=  A change  from 5.0L TO 2.0L = Final volume - initial volume = 2-5= -3.00L

P= 43.0atm

ΔE=  ΔH - P  ΔV

P  ΔV  = 43 atm x -3 = -129L.atm

We first convert  L-atm to Joules.

1 L-atm = 101.325 Joules.  

129L.atm = 129 x 101.325 = - 13071 J

to KJ becomes

13071/1000 = - 13.071KJ

Recall ΔE=  ΔH - P  ΔV and putting values

ΔE  = -75.0 - (-13.071 KJ)= -75.0 kJ + 13.071 kJ = -61.9 kJ

8 0
3 years ago
PLEASE HELP ASAP!!!!!
arsen [322]

An32

Explanation:

ggegq

4 0
2 years ago
A gold-colored ring has a mass of 17.5 grams and a volume of 0.82 mL. What is the density of this ring?
max2010maxim [7]

Answer:

21 g/mL

Explanation:

To solve this problem, first look at the density equation, which is D=M/V, which D stands for density, M stands for mass, and V stands for volume. When you substitute in the variables, you get D=17.5/.82, which is equivalent to 21.34. However, since we need to pay attention to the sig fig rules for multiplying, we need to have the same amount of sig figs as the value with the least amount of sig figs, which is the number .82. .82 has two sig figs, so you round down. Your answer will be 21 g/mL.

4 0
3 years ago
Other questions:
  • When sodium metal is added to water, an orange flame is observed on the metal surface. Based on this observation, what can best
    6·1 answer
  • What are 4 things an element can do with electrons
    10·2 answers
  • What is an ion?a) an atom that has either gained or lost electron(s)b) an atom that is sharing electrons with another atomc) an
    8·1 answer
  • Which statement is false?
    15·1 answer
  • An example of a synthesis is the Statue of Liberty turning green. Oxygen in the air combines with the copper statue to form copp
    13·2 answers
  • 5.22*10^-3 = ?*10^-2
    10·1 answer
  • What element is Group 6, period 6
    6·1 answer
  • Select the correct answer.
    13·2 answers
  • What happens to matter that is used up during photosynthesis?
    14·1 answer
  • Select the correct answer. Thomas has 235 grams of K2S in the chemistry lab. How many atoms of potassium (K) are in 235 grams of
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!