science question please help?

Question

The skin cells of a scorpion organize together to make a hard covering called a carapace, which helps protect the scorpion. What is the term for a group of similar cells working together? A.organism
B.system
C.tissue
D.organ
How do the number of chromosomes in a female scorpion's egg cells compare with the number in her body (somatic) cells?
A.The number of chromosomes is the same in both.
B.There are twice as many chromosomes in egg cells.
C.There are half as many chromosomes in egg cells.
D.The number of chromosomes depends on the size of the scorpion.

Scorpion cells undergo aerobic respiration, just as human cells do. During aerobic respiration, which process takes place?
A.Oxygen is used, and ATP is made.
B.Carbon dioxide and glucose are made.
C.Carbon dioxide and water are used.
D.Glucose and oxygen are released

thanks everyone for your help!!!

Answer 1

1. c tissue
2.c. half as many chromosomes (each reproductive cell, or "gamete" has half the amount of chromosomes, or only one of each chromosome, and they are paired with another set from a gamete of the opposite sex. Sperm have half, egg have half, together they have a full set.
3.a. oxygen is used and Adenosine Triphosphate is made.

Answer 2

For question 1. The definition of a group of cells working together is a tissue. So the answer for question 1 is C.

Question 2. Eggs have undergone meiosis from a type of somatic cell. In meiosis the chromosome number is halved. So the answer to question 2 is C.

Question 3. The answer is A. B is always incorrect as the process just doesn't happen. C and D are for photosynthesis.

Answer 3

1: C. Tissues make up organs, which make up systems, which make up organisms.

2: C. Sperm and egg cells have half the number of chromosomes other cells have, so that when they combine to form a zygote it will have the proper number of chromosomes.

3: A. Aerobic means that it uses oxygen, not CO2, and it certainly doesn't produce oxygen. That leaves A and B, but aerobic respiration doesn't produce glucose, so it must be A. (If animals could produce our own glucose we wouldn't need plants--at least not to eat.)

Answer 4

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Answer 5

1- Tissue
2- C
3- A

Answer 6

I know the answer to the first one is A but im not sure about the other 2

Answer 7

I think the answers are C, C, and A

Answer 8

1.d
2.c
3.b

k1

Answer 9

c,a,a.